Datasets:

alagaesia

/

spider_dev

like 0

network_1

SELECT T2.name FROM Friend AS T1 JOIN Highschooler AS T2 ON T1.student_id = T2.id INTERSECT SELECT T2.name FROM Likes AS T1 JOIN Highschooler AS T2 ON T1.liked_id = T2.id

Show name of all students who have some friends and also are liked by someone else.

create table Friend( student_id int, friend_id int, primary key (student_id,friend_id), foreign key(student_id) references Highschooler(ID), foreign key (friend_id) references Highschooler(ID) ); create table Likes( student_id int, liked_id int, primary key (student_id, liked_id), foreign key (liked_id) references Highschooler(ID), foreign key (student_id) references Highschooler(ID) );

CREATE TABLE Highschooler (ID INT, name TEXT, grade INT); CREATE TABLE Friend (student_id INT, friend_id INT); CREATE TABLE Likes (student_id INT, liked_id INT);

hard

network_1

SELECT T2.name FROM Friend AS T1 JOIN Highschooler AS T2 ON T1.student_id = T2.id INTERSECT SELECT T2.name FROM Likes AS T1 JOIN Highschooler AS T2 ON T1.liked_id = T2.id

What are the names of high schoolers who both have friends and are liked?

create table Friend( student_id int, friend_id int, primary key (student_id,friend_id), foreign key(student_id) references Highschooler(ID), foreign key (friend_id) references Highschooler(ID) ); create table Likes( student_id int, liked_id int, primary key (student_id, liked_id), foreign key (liked_id) references Highschooler(ID), foreign key (student_id) references Highschooler(ID) );

CREATE TABLE Highschooler (ID INT, name TEXT, grade INT); CREATE TABLE Friend (student_id INT, friend_id INT); CREATE TABLE Likes (student_id INT, liked_id INT);

hard

network_1

SELECT student_id , count(*) FROM Likes GROUP BY student_id

Count the number of likes for each student id.

create table Friend( student_id int, friend_id int, primary key (student_id,friend_id), foreign key(student_id) references Highschooler(ID), foreign key (friend_id) references Highschooler(ID) ); create table Likes( student_id int, liked_id int, primary key (student_id, liked_id), foreign key (liked_id) references Highschooler(ID), foreign key (student_id) references Highschooler(ID) );

CREATE TABLE Highschooler (ID INT, name TEXT, grade INT); CREATE TABLE Friend (student_id INT, friend_id INT); CREATE TABLE Likes (student_id INT, liked_id INT);

medium

network_1

SELECT student_id , count(*) FROM Likes GROUP BY student_id

How many likes correspond to each student id?

create table Friend( student_id int, friend_id int, primary key (student_id,friend_id), foreign key(student_id) references Highschooler(ID), foreign key (friend_id) references Highschooler(ID) ); create table Likes( student_id int, liked_id int, primary key (student_id, liked_id), foreign key (liked_id) references Highschooler(ID), foreign key (student_id) references Highschooler(ID) );

CREATE TABLE Highschooler (ID INT, name TEXT, grade INT); CREATE TABLE Friend (student_id INT, friend_id INT); CREATE TABLE Likes (student_id INT, liked_id INT);

medium

network_1

SELECT T2.name , count(*) FROM Likes AS T1 JOIN Highschooler AS T2 ON T1.student_id = T2.id GROUP BY T1.student_id

Show the names of high schoolers who have likes, and numbers of likes for each.

create table Friend( student_id int, friend_id int, primary key (student_id,friend_id), foreign key(student_id) references Highschooler(ID), foreign key (friend_id) references Highschooler(ID) ); create table Likes( student_id int, liked_id int, primary key (student_id, liked_id), foreign key (liked_id) references Highschooler(ID), foreign key (student_id) references Highschooler(ID) );

CREATE TABLE Highschooler (ID INT, name TEXT, grade INT); CREATE TABLE Friend (student_id INT, friend_id INT); CREATE TABLE Likes (student_id INT, liked_id INT);

medium

network_1

SELECT T2.name , count(*) FROM Likes AS T1 JOIN Highschooler AS T2 ON T1.student_id = T2.id GROUP BY T1.student_id

What are the names of high schoolers who have likes, and how many likes does each have?

create table Friend( student_id int, friend_id int, primary key (student_id,friend_id), foreign key(student_id) references Highschooler(ID), foreign key (friend_id) references Highschooler(ID) ); create table Likes( student_id int, liked_id int, primary key (student_id, liked_id), foreign key (liked_id) references Highschooler(ID), foreign key (student_id) references Highschooler(ID) );

CREATE TABLE Highschooler (ID INT, name TEXT, grade INT); CREATE TABLE Friend (student_id INT, friend_id INT); CREATE TABLE Likes (student_id INT, liked_id INT);

medium

network_1

SELECT T2.name FROM Likes AS T1 JOIN Highschooler AS T2 ON T1.student_id = T2.id GROUP BY T1.student_id ORDER BY count(*) DESC LIMIT 1

What is the name of the high schooler who has the greatest number of likes?

create table Friend( student_id int, friend_id int, primary key (student_id,friend_id), foreign key(student_id) references Highschooler(ID), foreign key (friend_id) references Highschooler(ID) ); create table Likes( student_id int, liked_id int, primary key (student_id, liked_id), foreign key (liked_id) references Highschooler(ID), foreign key (student_id) references Highschooler(ID) );

CREATE TABLE Highschooler (ID INT, name TEXT, grade INT); CREATE TABLE Friend (student_id INT, friend_id INT); CREATE TABLE Likes (student_id INT, liked_id INT);

extra

network_1

SELECT T2.name FROM Likes AS T1 JOIN Highschooler AS T2 ON T1.student_id = T2.id GROUP BY T1.student_id ORDER BY count(*) DESC LIMIT 1

Give the name of the student with the most likes.

create table Friend( student_id int, friend_id int, primary key (student_id,friend_id), foreign key(student_id) references Highschooler(ID), foreign key (friend_id) references Highschooler(ID) ); create table Likes( student_id int, liked_id int, primary key (student_id, liked_id), foreign key (liked_id) references Highschooler(ID), foreign key (student_id) references Highschooler(ID) );

CREATE TABLE Highschooler (ID INT, name TEXT, grade INT); CREATE TABLE Friend (student_id INT, friend_id INT); CREATE TABLE Likes (student_id INT, liked_id INT);

extra

network_1

SELECT T2.name FROM Likes AS T1 JOIN Highschooler AS T2 ON T1.student_id = T2.id GROUP BY T1.student_id HAVING count(*) >= 2

Show the names of students who have at least 2 likes.

create table Friend( student_id int, friend_id int, primary key (student_id,friend_id), foreign key(student_id) references Highschooler(ID), foreign key (friend_id) references Highschooler(ID) ); create table Likes( student_id int, liked_id int, primary key (student_id, liked_id), foreign key (liked_id) references Highschooler(ID), foreign key (student_id) references Highschooler(ID) );

CREATE TABLE Highschooler (ID INT, name TEXT, grade INT); CREATE TABLE Friend (student_id INT, friend_id INT); CREATE TABLE Likes (student_id INT, liked_id INT);

medium

network_1

SELECT T2.name FROM Likes AS T1 JOIN Highschooler AS T2 ON T1.student_id = T2.id GROUP BY T1.student_id HAVING count(*) >= 2

What are the names of students who have 2 or more likes?

create table Friend( student_id int, friend_id int, primary key (student_id,friend_id), foreign key(student_id) references Highschooler(ID), foreign key (friend_id) references Highschooler(ID) ); create table Likes( student_id int, liked_id int, primary key (student_id, liked_id), foreign key (liked_id) references Highschooler(ID), foreign key (student_id) references Highschooler(ID) );

CREATE TABLE Highschooler (ID INT, name TEXT, grade INT); CREATE TABLE Friend (student_id INT, friend_id INT); CREATE TABLE Likes (student_id INT, liked_id INT);

medium

network_1

SELECT T2.name FROM Friend AS T1 JOIN Highschooler AS T2 ON T1.student_id = T2.id WHERE T2.grade > 5 GROUP BY T1.student_id HAVING count(*) >= 2

Show the names of students who have a grade higher than 5 and have at least 2 friends.

create table Friend( student_id int, friend_id int, primary key (student_id,friend_id), foreign key(student_id) references Highschooler(ID), foreign key (friend_id) references Highschooler(ID) ); create table Likes( student_id int, liked_id int, primary key (student_id, liked_id), foreign key (liked_id) references Highschooler(ID), foreign key (student_id) references Highschooler(ID) );

CREATE TABLE Highschooler (ID INT, name TEXT, grade INT); CREATE TABLE Friend (student_id INT, friend_id INT); CREATE TABLE Likes (student_id INT, liked_id INT);

hard

network_1

SELECT T2.name FROM Friend AS T1 JOIN Highschooler AS T2 ON T1.student_id = T2.id WHERE T2.grade > 5 GROUP BY T1.student_id HAVING count(*) >= 2

What are the names of high schoolers who have a grade of over 5 and have 2 or more friends?

create table Friend( student_id int, friend_id int, primary key (student_id,friend_id), foreign key(student_id) references Highschooler(ID), foreign key (friend_id) references Highschooler(ID) ); create table Likes( student_id int, liked_id int, primary key (student_id, liked_id), foreign key (liked_id) references Highschooler(ID), foreign key (student_id) references Highschooler(ID) );

CREATE TABLE Highschooler (ID INT, name TEXT, grade INT); CREATE TABLE Friend (student_id INT, friend_id INT); CREATE TABLE Likes (student_id INT, liked_id INT);

hard

network_1

SELECT count(*) FROM Likes AS T1 JOIN Highschooler AS T2 ON T1.student_id = T2.id WHERE T2.name = "Kyle"

How many likes does Kyle have?

create table Friend( student_id int, friend_id int, primary key (student_id,friend_id), foreign key(student_id) references Highschooler(ID), foreign key (friend_id) references Highschooler(ID) ); create table Likes( student_id int, liked_id int, primary key (student_id, liked_id), foreign key (liked_id) references Highschooler(ID), foreign key (student_id) references Highschooler(ID) );

CREATE TABLE Highschooler (ID INT, name TEXT, grade INT); CREATE TABLE Friend (student_id INT, friend_id INT); CREATE TABLE Likes (student_id INT, liked_id INT);

medium

network_1

SELECT count(*) FROM Likes AS T1 JOIN Highschooler AS T2 ON T1.student_id = T2.id WHERE T2.name = "Kyle"

Return the number of likes that the high schooler named Kyle has.

create table Friend( student_id int, friend_id int, primary key (student_id,friend_id), foreign key(student_id) references Highschooler(ID), foreign key (friend_id) references Highschooler(ID) ); create table Likes( student_id int, liked_id int, primary key (student_id, liked_id), foreign key (liked_id) references Highschooler(ID), foreign key (student_id) references Highschooler(ID) );

CREATE TABLE Highschooler (ID INT, name TEXT, grade INT); CREATE TABLE Friend (student_id INT, friend_id INT); CREATE TABLE Likes (student_id INT, liked_id INT);

medium

network_1

SELECT avg(grade) FROM Highschooler WHERE id IN (SELECT T1.student_id FROM Friend AS T1 JOIN Highschooler AS T2 ON T1.student_id = T2.id)

Find the average grade of all students who have some friends.

create table Friend( student_id int, friend_id int, primary key (student_id,friend_id), foreign key(student_id) references Highschooler(ID), foreign key (friend_id) references Highschooler(ID) ); create table Likes( student_id int, liked_id int, primary key (student_id, liked_id), foreign key (liked_id) references Highschooler(ID), foreign key (student_id) references Highschooler(ID) );

CREATE TABLE Highschooler (ID INT, name TEXT, grade INT); CREATE TABLE Friend (student_id INT, friend_id INT); CREATE TABLE Likes (student_id INT, liked_id INT);

hard

network_1

SELECT avg(grade) FROM Highschooler WHERE id IN (SELECT T1.student_id FROM Friend AS T1 JOIN Highschooler AS T2 ON T1.student_id = T2.id)

What is the average grade of students who have friends?

create table Friend( student_id int, friend_id int, primary key (student_id,friend_id), foreign key(student_id) references Highschooler(ID), foreign key (friend_id) references Highschooler(ID) ); create table Likes( student_id int, liked_id int, primary key (student_id, liked_id), foreign key (liked_id) references Highschooler(ID), foreign key (student_id) references Highschooler(ID) );

CREATE TABLE Highschooler (ID INT, name TEXT, grade INT); CREATE TABLE Friend (student_id INT, friend_id INT); CREATE TABLE Likes (student_id INT, liked_id INT);

hard

network_1

SELECT min(grade) FROM Highschooler WHERE id NOT IN (SELECT T1.student_id FROM Friend AS T1 JOIN Highschooler AS T2 ON T1.student_id = T2.id)

Find the minimum grade of students who have no friends.

create table Friend( student_id int, friend_id int, primary key (student_id,friend_id), foreign key(student_id) references Highschooler(ID), foreign key (friend_id) references Highschooler(ID) ); create table Likes( student_id int, liked_id int, primary key (student_id, liked_id), foreign key (liked_id) references Highschooler(ID), foreign key (student_id) references Highschooler(ID) );

CREATE TABLE Highschooler (ID INT, name TEXT, grade INT); CREATE TABLE Friend (student_id INT, friend_id INT); CREATE TABLE Likes (student_id INT, liked_id INT);

extra

network_1

SELECT min(grade) FROM Highschooler WHERE id NOT IN (SELECT T1.student_id FROM Friend AS T1 JOIN Highschooler AS T2 ON T1.student_id = T2.id)

What is the lowest grade of students who do not have any friends?

create table Friend( student_id int, friend_id int, primary key (student_id,friend_id), foreign key(student_id) references Highschooler(ID), foreign key (friend_id) references Highschooler(ID) ); create table Likes( student_id int, liked_id int, primary key (student_id, liked_id), foreign key (liked_id) references Highschooler(ID), foreign key (student_id) references Highschooler(ID) );

CREATE TABLE Highschooler (ID INT, name TEXT, grade INT); CREATE TABLE Friend (student_id INT, friend_id INT); CREATE TABLE Likes (student_id INT, liked_id INT);

extra

dog_kennels

SELECT state FROM Owners INTERSECT SELECT state FROM Professionals

Which states have both owners and professionals living there?

CREATE TABLE `Breeds` ( `breed_code` VARCHAR(10) PRIMARY KEY , `breed_name` VARCHAR(80) ); CREATE TABLE `Charges` ( `charge_id` INTEGER PRIMARY KEY , `charge_type` VARCHAR(10), `charge_amount` DECIMAL(19,4) ); CREATE TABLE `Sizes` ( `size_code` VARCHAR(10) PRIMARY KEY , `size_description` VARCHAR(80) ); CREATE TABLE `Treatment_Types` ( `treatment_type_code` VARCHAR(10) PRIMARY KEY , `treatment_type_description` VARCHAR(80) ); CREATE TABLE `Owners` ( `owner_id` INTEGER PRIMARY KEY , `first_name` VARCHAR(50), `last_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Dogs` ( `dog_id` INTEGER PRIMARY KEY , `owner_id` INTEGER NOT NULL, `abandoned_yn` VARCHAR(1), `breed_code` VARCHAR(10) NOT NULL, `size_code` VARCHAR(10) NOT NULL, `name` VARCHAR(50), `age` VARCHAR(20), `date_of_birth` DATETIME, `gender` VARCHAR(1), `weight` VARCHAR(20), `date_arrived` DATETIME, `date_adopted` DATETIME, `date_departed` DATETIME, FOREIGN KEY (`breed_code` ) REFERENCES `Breeds`(`breed_code` ), FOREIGN KEY (`size_code` ) REFERENCES `Sizes`(`size_code` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ) ); CREATE TABLE `Professionals` ( `professional_id` INTEGER PRIMARY KEY , `role_code` VARCHAR(10) NOT NULL, `first_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `last_name` VARCHAR(50), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Treatments` ( `treatment_id` INTEGER PRIMARY KEY , `dog_id` INTEGER NOT NULL, `professional_id` INTEGER NOT NULL, `treatment_type_code` VARCHAR(10) NOT NULL, `date_of_treatment` DATETIME, `cost_of_treatment` DECIMAL(19,4), FOREIGN KEY (`treatment_type_code` ) REFERENCES `Treatment_Types`(`treatment_type_code` ), FOREIGN KEY (`professional_id` ) REFERENCES `Professionals`(`professional_id` ), FOREIGN KEY (`dog_id` ) REFERENCES `Dogs`(`dog_id` ) );

CREATE TABLE Breeds (breed_code VARCHAR(10), breed_name VARCHAR(80)); CREATE TABLE Charges (charge_id INTEGER, charge_type VARCHAR(10), charge_amount DECIMAL(19,4)); CREATE TABLE Sizes (size_code VARCHAR(10), size_description VARCHAR(80)); CREATE TABLE Treatment_Types (treatment_type_code VARCHAR(10), treatment_type_description VARCHAR(80)); CREATE TABLE Owners (owner_id INTEGER, first_name VARCHAR(50), last_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Dogs (dog_id INTEGER, owner_id INTEGER, abandoned_yn VARCHAR(1), breed_code VARCHAR(10), size_code VARCHAR(10), name VARCHAR(50), age VARCHAR(20), date_of_birth DATETIME, gender VARCHAR(1), weight VARCHAR(20), date_arrived DATETIME, date_adopted DATETIME, date_departed DATETIME); CREATE TABLE Professionals (professional_id INTEGER, role_code VARCHAR(10), first_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), last_name VARCHAR(50), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Treatments (treatment_id INTEGER, dog_id INTEGER, professional_id INTEGER, treatment_type_code VARCHAR(10), date_of_treatment DATETIME, cost_of_treatment DECIMAL(19,4));

hard

dog_kennels

SELECT state FROM Owners INTERSECT SELECT state FROM Professionals

Find the states where both owners and professionals live.

CREATE TABLE `Breeds` ( `breed_code` VARCHAR(10) PRIMARY KEY , `breed_name` VARCHAR(80) ); CREATE TABLE `Charges` ( `charge_id` INTEGER PRIMARY KEY , `charge_type` VARCHAR(10), `charge_amount` DECIMAL(19,4) ); CREATE TABLE `Sizes` ( `size_code` VARCHAR(10) PRIMARY KEY , `size_description` VARCHAR(80) ); CREATE TABLE `Treatment_Types` ( `treatment_type_code` VARCHAR(10) PRIMARY KEY , `treatment_type_description` VARCHAR(80) ); CREATE TABLE `Owners` ( `owner_id` INTEGER PRIMARY KEY , `first_name` VARCHAR(50), `last_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Dogs` ( `dog_id` INTEGER PRIMARY KEY , `owner_id` INTEGER NOT NULL, `abandoned_yn` VARCHAR(1), `breed_code` VARCHAR(10) NOT NULL, `size_code` VARCHAR(10) NOT NULL, `name` VARCHAR(50), `age` VARCHAR(20), `date_of_birth` DATETIME, `gender` VARCHAR(1), `weight` VARCHAR(20), `date_arrived` DATETIME, `date_adopted` DATETIME, `date_departed` DATETIME, FOREIGN KEY (`breed_code` ) REFERENCES `Breeds`(`breed_code` ), FOREIGN KEY (`size_code` ) REFERENCES `Sizes`(`size_code` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ) ); CREATE TABLE `Professionals` ( `professional_id` INTEGER PRIMARY KEY , `role_code` VARCHAR(10) NOT NULL, `first_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `last_name` VARCHAR(50), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Treatments` ( `treatment_id` INTEGER PRIMARY KEY , `dog_id` INTEGER NOT NULL, `professional_id` INTEGER NOT NULL, `treatment_type_code` VARCHAR(10) NOT NULL, `date_of_treatment` DATETIME, `cost_of_treatment` DECIMAL(19,4), FOREIGN KEY (`treatment_type_code` ) REFERENCES `Treatment_Types`(`treatment_type_code` ), FOREIGN KEY (`professional_id` ) REFERENCES `Professionals`(`professional_id` ), FOREIGN KEY (`dog_id` ) REFERENCES `Dogs`(`dog_id` ) );

CREATE TABLE Breeds (breed_code VARCHAR(10), breed_name VARCHAR(80)); CREATE TABLE Charges (charge_id INTEGER, charge_type VARCHAR(10), charge_amount DECIMAL(19,4)); CREATE TABLE Sizes (size_code VARCHAR(10), size_description VARCHAR(80)); CREATE TABLE Treatment_Types (treatment_type_code VARCHAR(10), treatment_type_description VARCHAR(80)); CREATE TABLE Owners (owner_id INTEGER, first_name VARCHAR(50), last_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Dogs (dog_id INTEGER, owner_id INTEGER, abandoned_yn VARCHAR(1), breed_code VARCHAR(10), size_code VARCHAR(10), name VARCHAR(50), age VARCHAR(20), date_of_birth DATETIME, gender VARCHAR(1), weight VARCHAR(20), date_arrived DATETIME, date_adopted DATETIME, date_departed DATETIME); CREATE TABLE Professionals (professional_id INTEGER, role_code VARCHAR(10), first_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), last_name VARCHAR(50), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Treatments (treatment_id INTEGER, dog_id INTEGER, professional_id INTEGER, treatment_type_code VARCHAR(10), date_of_treatment DATETIME, cost_of_treatment DECIMAL(19,4));

hard

dog_kennels

SELECT avg(age) FROM Dogs WHERE dog_id IN ( SELECT dog_id FROM Treatments )

What is the average age of the dogs who have gone through any treatments?

CREATE TABLE `Breeds` ( `breed_code` VARCHAR(10) PRIMARY KEY , `breed_name` VARCHAR(80) ); CREATE TABLE `Charges` ( `charge_id` INTEGER PRIMARY KEY , `charge_type` VARCHAR(10), `charge_amount` DECIMAL(19,4) ); CREATE TABLE `Sizes` ( `size_code` VARCHAR(10) PRIMARY KEY , `size_description` VARCHAR(80) ); CREATE TABLE `Treatment_Types` ( `treatment_type_code` VARCHAR(10) PRIMARY KEY , `treatment_type_description` VARCHAR(80) ); CREATE TABLE `Owners` ( `owner_id` INTEGER PRIMARY KEY , `first_name` VARCHAR(50), `last_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Dogs` ( `dog_id` INTEGER PRIMARY KEY , `owner_id` INTEGER NOT NULL, `abandoned_yn` VARCHAR(1), `breed_code` VARCHAR(10) NOT NULL, `size_code` VARCHAR(10) NOT NULL, `name` VARCHAR(50), `age` VARCHAR(20), `date_of_birth` DATETIME, `gender` VARCHAR(1), `weight` VARCHAR(20), `date_arrived` DATETIME, `date_adopted` DATETIME, `date_departed` DATETIME, FOREIGN KEY (`breed_code` ) REFERENCES `Breeds`(`breed_code` ), FOREIGN KEY (`size_code` ) REFERENCES `Sizes`(`size_code` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ) ); CREATE TABLE `Professionals` ( `professional_id` INTEGER PRIMARY KEY , `role_code` VARCHAR(10) NOT NULL, `first_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `last_name` VARCHAR(50), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Treatments` ( `treatment_id` INTEGER PRIMARY KEY , `dog_id` INTEGER NOT NULL, `professional_id` INTEGER NOT NULL, `treatment_type_code` VARCHAR(10) NOT NULL, `date_of_treatment` DATETIME, `cost_of_treatment` DECIMAL(19,4), FOREIGN KEY (`treatment_type_code` ) REFERENCES `Treatment_Types`(`treatment_type_code` ), FOREIGN KEY (`professional_id` ) REFERENCES `Professionals`(`professional_id` ), FOREIGN KEY (`dog_id` ) REFERENCES `Dogs`(`dog_id` ) );

CREATE TABLE Breeds (breed_code VARCHAR(10), breed_name VARCHAR(80)); CREATE TABLE Charges (charge_id INTEGER, charge_type VARCHAR(10), charge_amount DECIMAL(19,4)); CREATE TABLE Sizes (size_code VARCHAR(10), size_description VARCHAR(80)); CREATE TABLE Treatment_Types (treatment_type_code VARCHAR(10), treatment_type_description VARCHAR(80)); CREATE TABLE Owners (owner_id INTEGER, first_name VARCHAR(50), last_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Dogs (dog_id INTEGER, owner_id INTEGER, abandoned_yn VARCHAR(1), breed_code VARCHAR(10), size_code VARCHAR(10), name VARCHAR(50), age VARCHAR(20), date_of_birth DATETIME, gender VARCHAR(1), weight VARCHAR(20), date_arrived DATETIME, date_adopted DATETIME, date_departed DATETIME); CREATE TABLE Professionals (professional_id INTEGER, role_code VARCHAR(10), first_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), last_name VARCHAR(50), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Treatments (treatment_id INTEGER, dog_id INTEGER, professional_id INTEGER, treatment_type_code VARCHAR(10), date_of_treatment DATETIME, cost_of_treatment DECIMAL(19,4));

hard

dog_kennels

SELECT avg(age) FROM Dogs WHERE dog_id IN ( SELECT dog_id FROM Treatments )

Find the average age of the dogs who went through treatments.

CREATE TABLE `Breeds` ( `breed_code` VARCHAR(10) PRIMARY KEY , `breed_name` VARCHAR(80) ); CREATE TABLE `Charges` ( `charge_id` INTEGER PRIMARY KEY , `charge_type` VARCHAR(10), `charge_amount` DECIMAL(19,4) ); CREATE TABLE `Sizes` ( `size_code` VARCHAR(10) PRIMARY KEY , `size_description` VARCHAR(80) ); CREATE TABLE `Treatment_Types` ( `treatment_type_code` VARCHAR(10) PRIMARY KEY , `treatment_type_description` VARCHAR(80) ); CREATE TABLE `Owners` ( `owner_id` INTEGER PRIMARY KEY , `first_name` VARCHAR(50), `last_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Dogs` ( `dog_id` INTEGER PRIMARY KEY , `owner_id` INTEGER NOT NULL, `abandoned_yn` VARCHAR(1), `breed_code` VARCHAR(10) NOT NULL, `size_code` VARCHAR(10) NOT NULL, `name` VARCHAR(50), `age` VARCHAR(20), `date_of_birth` DATETIME, `gender` VARCHAR(1), `weight` VARCHAR(20), `date_arrived` DATETIME, `date_adopted` DATETIME, `date_departed` DATETIME, FOREIGN KEY (`breed_code` ) REFERENCES `Breeds`(`breed_code` ), FOREIGN KEY (`size_code` ) REFERENCES `Sizes`(`size_code` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ) ); CREATE TABLE `Professionals` ( `professional_id` INTEGER PRIMARY KEY , `role_code` VARCHAR(10) NOT NULL, `first_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `last_name` VARCHAR(50), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Treatments` ( `treatment_id` INTEGER PRIMARY KEY , `dog_id` INTEGER NOT NULL, `professional_id` INTEGER NOT NULL, `treatment_type_code` VARCHAR(10) NOT NULL, `date_of_treatment` DATETIME, `cost_of_treatment` DECIMAL(19,4), FOREIGN KEY (`treatment_type_code` ) REFERENCES `Treatment_Types`(`treatment_type_code` ), FOREIGN KEY (`professional_id` ) REFERENCES `Professionals`(`professional_id` ), FOREIGN KEY (`dog_id` ) REFERENCES `Dogs`(`dog_id` ) );

CREATE TABLE Breeds (breed_code VARCHAR(10), breed_name VARCHAR(80)); CREATE TABLE Charges (charge_id INTEGER, charge_type VARCHAR(10), charge_amount DECIMAL(19,4)); CREATE TABLE Sizes (size_code VARCHAR(10), size_description VARCHAR(80)); CREATE TABLE Treatment_Types (treatment_type_code VARCHAR(10), treatment_type_description VARCHAR(80)); CREATE TABLE Owners (owner_id INTEGER, first_name VARCHAR(50), last_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Dogs (dog_id INTEGER, owner_id INTEGER, abandoned_yn VARCHAR(1), breed_code VARCHAR(10), size_code VARCHAR(10), name VARCHAR(50), age VARCHAR(20), date_of_birth DATETIME, gender VARCHAR(1), weight VARCHAR(20), date_arrived DATETIME, date_adopted DATETIME, date_departed DATETIME); CREATE TABLE Professionals (professional_id INTEGER, role_code VARCHAR(10), first_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), last_name VARCHAR(50), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Treatments (treatment_id INTEGER, dog_id INTEGER, professional_id INTEGER, treatment_type_code VARCHAR(10), date_of_treatment DATETIME, cost_of_treatment DECIMAL(19,4));

hard

dog_kennels

SELECT professional_id , last_name , cell_number FROM Professionals WHERE state = 'Indiana' UNION SELECT T1.professional_id , T1.last_name , T1.cell_number FROM Professionals AS T1 JOIN Treatments AS T2 ON T1.professional_id = T2.professional_id GROUP BY T1.professional_id HAVING count(*) > 2

Which professionals live in the state of Indiana or have done treatment on more than 2 treatments? List his or her id, last name and cell phone.

CREATE TABLE `Breeds` ( `breed_code` VARCHAR(10) PRIMARY KEY , `breed_name` VARCHAR(80) ); CREATE TABLE `Charges` ( `charge_id` INTEGER PRIMARY KEY , `charge_type` VARCHAR(10), `charge_amount` DECIMAL(19,4) ); CREATE TABLE `Sizes` ( `size_code` VARCHAR(10) PRIMARY KEY , `size_description` VARCHAR(80) ); CREATE TABLE `Treatment_Types` ( `treatment_type_code` VARCHAR(10) PRIMARY KEY , `treatment_type_description` VARCHAR(80) ); CREATE TABLE `Owners` ( `owner_id` INTEGER PRIMARY KEY , `first_name` VARCHAR(50), `last_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Dogs` ( `dog_id` INTEGER PRIMARY KEY , `owner_id` INTEGER NOT NULL, `abandoned_yn` VARCHAR(1), `breed_code` VARCHAR(10) NOT NULL, `size_code` VARCHAR(10) NOT NULL, `name` VARCHAR(50), `age` VARCHAR(20), `date_of_birth` DATETIME, `gender` VARCHAR(1), `weight` VARCHAR(20), `date_arrived` DATETIME, `date_adopted` DATETIME, `date_departed` DATETIME, FOREIGN KEY (`breed_code` ) REFERENCES `Breeds`(`breed_code` ), FOREIGN KEY (`size_code` ) REFERENCES `Sizes`(`size_code` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ) ); CREATE TABLE `Professionals` ( `professional_id` INTEGER PRIMARY KEY , `role_code` VARCHAR(10) NOT NULL, `first_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `last_name` VARCHAR(50), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Treatments` ( `treatment_id` INTEGER PRIMARY KEY , `dog_id` INTEGER NOT NULL, `professional_id` INTEGER NOT NULL, `treatment_type_code` VARCHAR(10) NOT NULL, `date_of_treatment` DATETIME, `cost_of_treatment` DECIMAL(19,4), FOREIGN KEY (`treatment_type_code` ) REFERENCES `Treatment_Types`(`treatment_type_code` ), FOREIGN KEY (`professional_id` ) REFERENCES `Professionals`(`professional_id` ), FOREIGN KEY (`dog_id` ) REFERENCES `Dogs`(`dog_id` ) );

CREATE TABLE Breeds (breed_code VARCHAR(10), breed_name VARCHAR(80)); CREATE TABLE Charges (charge_id INTEGER, charge_type VARCHAR(10), charge_amount DECIMAL(19,4)); CREATE TABLE Sizes (size_code VARCHAR(10), size_description VARCHAR(80)); CREATE TABLE Treatment_Types (treatment_type_code VARCHAR(10), treatment_type_description VARCHAR(80)); CREATE TABLE Owners (owner_id INTEGER, first_name VARCHAR(50), last_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Dogs (dog_id INTEGER, owner_id INTEGER, abandoned_yn VARCHAR(1), breed_code VARCHAR(10), size_code VARCHAR(10), name VARCHAR(50), age VARCHAR(20), date_of_birth DATETIME, gender VARCHAR(1), weight VARCHAR(20), date_arrived DATETIME, date_adopted DATETIME, date_departed DATETIME); CREATE TABLE Professionals (professional_id INTEGER, role_code VARCHAR(10), first_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), last_name VARCHAR(50), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Treatments (treatment_id INTEGER, dog_id INTEGER, professional_id INTEGER, treatment_type_code VARCHAR(10), date_of_treatment DATETIME, cost_of_treatment DECIMAL(19,4));

extra

dog_kennels

SELECT professional_id , last_name , cell_number FROM Professionals WHERE state = 'Indiana' UNION SELECT T1.professional_id , T1.last_name , T1.cell_number FROM Professionals AS T1 JOIN Treatments AS T2 ON T1.professional_id = T2.professional_id GROUP BY T1.professional_id HAVING count(*) > 2

Find the id, last name and cell phone of the professionals who live in the state of Indiana or have performed more than two treatments.

CREATE TABLE `Breeds` ( `breed_code` VARCHAR(10) PRIMARY KEY , `breed_name` VARCHAR(80) ); CREATE TABLE `Charges` ( `charge_id` INTEGER PRIMARY KEY , `charge_type` VARCHAR(10), `charge_amount` DECIMAL(19,4) ); CREATE TABLE `Sizes` ( `size_code` VARCHAR(10) PRIMARY KEY , `size_description` VARCHAR(80) ); CREATE TABLE `Treatment_Types` ( `treatment_type_code` VARCHAR(10) PRIMARY KEY , `treatment_type_description` VARCHAR(80) ); CREATE TABLE `Owners` ( `owner_id` INTEGER PRIMARY KEY , `first_name` VARCHAR(50), `last_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Dogs` ( `dog_id` INTEGER PRIMARY KEY , `owner_id` INTEGER NOT NULL, `abandoned_yn` VARCHAR(1), `breed_code` VARCHAR(10) NOT NULL, `size_code` VARCHAR(10) NOT NULL, `name` VARCHAR(50), `age` VARCHAR(20), `date_of_birth` DATETIME, `gender` VARCHAR(1), `weight` VARCHAR(20), `date_arrived` DATETIME, `date_adopted` DATETIME, `date_departed` DATETIME, FOREIGN KEY (`breed_code` ) REFERENCES `Breeds`(`breed_code` ), FOREIGN KEY (`size_code` ) REFERENCES `Sizes`(`size_code` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ) ); CREATE TABLE `Professionals` ( `professional_id` INTEGER PRIMARY KEY , `role_code` VARCHAR(10) NOT NULL, `first_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `last_name` VARCHAR(50), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Treatments` ( `treatment_id` INTEGER PRIMARY KEY , `dog_id` INTEGER NOT NULL, `professional_id` INTEGER NOT NULL, `treatment_type_code` VARCHAR(10) NOT NULL, `date_of_treatment` DATETIME, `cost_of_treatment` DECIMAL(19,4), FOREIGN KEY (`treatment_type_code` ) REFERENCES `Treatment_Types`(`treatment_type_code` ), FOREIGN KEY (`professional_id` ) REFERENCES `Professionals`(`professional_id` ), FOREIGN KEY (`dog_id` ) REFERENCES `Dogs`(`dog_id` ) );

CREATE TABLE Breeds (breed_code VARCHAR(10), breed_name VARCHAR(80)); CREATE TABLE Charges (charge_id INTEGER, charge_type VARCHAR(10), charge_amount DECIMAL(19,4)); CREATE TABLE Sizes (size_code VARCHAR(10), size_description VARCHAR(80)); CREATE TABLE Treatment_Types (treatment_type_code VARCHAR(10), treatment_type_description VARCHAR(80)); CREATE TABLE Owners (owner_id INTEGER, first_name VARCHAR(50), last_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Dogs (dog_id INTEGER, owner_id INTEGER, abandoned_yn VARCHAR(1), breed_code VARCHAR(10), size_code VARCHAR(10), name VARCHAR(50), age VARCHAR(20), date_of_birth DATETIME, gender VARCHAR(1), weight VARCHAR(20), date_arrived DATETIME, date_adopted DATETIME, date_departed DATETIME); CREATE TABLE Professionals (professional_id INTEGER, role_code VARCHAR(10), first_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), last_name VARCHAR(50), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Treatments (treatment_id INTEGER, dog_id INTEGER, professional_id INTEGER, treatment_type_code VARCHAR(10), date_of_treatment DATETIME, cost_of_treatment DECIMAL(19,4));

extra

dog_kennels

select name from dogs where dog_id not in ( select dog_id from treatments group by dog_id having sum(cost_of_treatment) > 1000 )

Which dogs have not cost their owner more than 1000 for treatment ? List the dog names .

CREATE TABLE `Breeds` ( `breed_code` VARCHAR(10) PRIMARY KEY , `breed_name` VARCHAR(80) ); CREATE TABLE `Charges` ( `charge_id` INTEGER PRIMARY KEY , `charge_type` VARCHAR(10), `charge_amount` DECIMAL(19,4) ); CREATE TABLE `Sizes` ( `size_code` VARCHAR(10) PRIMARY KEY , `size_description` VARCHAR(80) ); CREATE TABLE `Treatment_Types` ( `treatment_type_code` VARCHAR(10) PRIMARY KEY , `treatment_type_description` VARCHAR(80) ); CREATE TABLE `Owners` ( `owner_id` INTEGER PRIMARY KEY , `first_name` VARCHAR(50), `last_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Dogs` ( `dog_id` INTEGER PRIMARY KEY , `owner_id` INTEGER NOT NULL, `abandoned_yn` VARCHAR(1), `breed_code` VARCHAR(10) NOT NULL, `size_code` VARCHAR(10) NOT NULL, `name` VARCHAR(50), `age` VARCHAR(20), `date_of_birth` DATETIME, `gender` VARCHAR(1), `weight` VARCHAR(20), `date_arrived` DATETIME, `date_adopted` DATETIME, `date_departed` DATETIME, FOREIGN KEY (`breed_code` ) REFERENCES `Breeds`(`breed_code` ), FOREIGN KEY (`size_code` ) REFERENCES `Sizes`(`size_code` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ) ); CREATE TABLE `Professionals` ( `professional_id` INTEGER PRIMARY KEY , `role_code` VARCHAR(10) NOT NULL, `first_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `last_name` VARCHAR(50), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Treatments` ( `treatment_id` INTEGER PRIMARY KEY , `dog_id` INTEGER NOT NULL, `professional_id` INTEGER NOT NULL, `treatment_type_code` VARCHAR(10) NOT NULL, `date_of_treatment` DATETIME, `cost_of_treatment` DECIMAL(19,4), FOREIGN KEY (`treatment_type_code` ) REFERENCES `Treatment_Types`(`treatment_type_code` ), FOREIGN KEY (`professional_id` ) REFERENCES `Professionals`(`professional_id` ), FOREIGN KEY (`dog_id` ) REFERENCES `Dogs`(`dog_id` ) );

CREATE TABLE Breeds (breed_code VARCHAR(10), breed_name VARCHAR(80)); CREATE TABLE Charges (charge_id INTEGER, charge_type VARCHAR(10), charge_amount DECIMAL(19,4)); CREATE TABLE Sizes (size_code VARCHAR(10), size_description VARCHAR(80)); CREATE TABLE Treatment_Types (treatment_type_code VARCHAR(10), treatment_type_description VARCHAR(80)); CREATE TABLE Owners (owner_id INTEGER, first_name VARCHAR(50), last_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Dogs (dog_id INTEGER, owner_id INTEGER, abandoned_yn VARCHAR(1), breed_code VARCHAR(10), size_code VARCHAR(10), name VARCHAR(50), age VARCHAR(20), date_of_birth DATETIME, gender VARCHAR(1), weight VARCHAR(20), date_arrived DATETIME, date_adopted DATETIME, date_departed DATETIME); CREATE TABLE Professionals (professional_id INTEGER, role_code VARCHAR(10), first_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), last_name VARCHAR(50), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Treatments (treatment_id INTEGER, dog_id INTEGER, professional_id INTEGER, treatment_type_code VARCHAR(10), date_of_treatment DATETIME, cost_of_treatment DECIMAL(19,4));

hard

dog_kennels

select name from dogs where dog_id not in ( select dog_id from treatments group by dog_id having sum(cost_of_treatment) > 1000 )

What are the names of the dogs for which the owner has not spend more than 1000 for treatment ?

CREATE TABLE `Breeds` ( `breed_code` VARCHAR(10) PRIMARY KEY , `breed_name` VARCHAR(80) ); CREATE TABLE `Charges` ( `charge_id` INTEGER PRIMARY KEY , `charge_type` VARCHAR(10), `charge_amount` DECIMAL(19,4) ); CREATE TABLE `Sizes` ( `size_code` VARCHAR(10) PRIMARY KEY , `size_description` VARCHAR(80) ); CREATE TABLE `Treatment_Types` ( `treatment_type_code` VARCHAR(10) PRIMARY KEY , `treatment_type_description` VARCHAR(80) ); CREATE TABLE `Owners` ( `owner_id` INTEGER PRIMARY KEY , `first_name` VARCHAR(50), `last_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Dogs` ( `dog_id` INTEGER PRIMARY KEY , `owner_id` INTEGER NOT NULL, `abandoned_yn` VARCHAR(1), `breed_code` VARCHAR(10) NOT NULL, `size_code` VARCHAR(10) NOT NULL, `name` VARCHAR(50), `age` VARCHAR(20), `date_of_birth` DATETIME, `gender` VARCHAR(1), `weight` VARCHAR(20), `date_arrived` DATETIME, `date_adopted` DATETIME, `date_departed` DATETIME, FOREIGN KEY (`breed_code` ) REFERENCES `Breeds`(`breed_code` ), FOREIGN KEY (`size_code` ) REFERENCES `Sizes`(`size_code` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ) ); CREATE TABLE `Professionals` ( `professional_id` INTEGER PRIMARY KEY , `role_code` VARCHAR(10) NOT NULL, `first_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `last_name` VARCHAR(50), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Treatments` ( `treatment_id` INTEGER PRIMARY KEY , `dog_id` INTEGER NOT NULL, `professional_id` INTEGER NOT NULL, `treatment_type_code` VARCHAR(10) NOT NULL, `date_of_treatment` DATETIME, `cost_of_treatment` DECIMAL(19,4), FOREIGN KEY (`treatment_type_code` ) REFERENCES `Treatment_Types`(`treatment_type_code` ), FOREIGN KEY (`professional_id` ) REFERENCES `Professionals`(`professional_id` ), FOREIGN KEY (`dog_id` ) REFERENCES `Dogs`(`dog_id` ) );

CREATE TABLE Breeds (breed_code VARCHAR(10), breed_name VARCHAR(80)); CREATE TABLE Charges (charge_id INTEGER, charge_type VARCHAR(10), charge_amount DECIMAL(19,4)); CREATE TABLE Sizes (size_code VARCHAR(10), size_description VARCHAR(80)); CREATE TABLE Treatment_Types (treatment_type_code VARCHAR(10), treatment_type_description VARCHAR(80)); CREATE TABLE Owners (owner_id INTEGER, first_name VARCHAR(50), last_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Dogs (dog_id INTEGER, owner_id INTEGER, abandoned_yn VARCHAR(1), breed_code VARCHAR(10), size_code VARCHAR(10), name VARCHAR(50), age VARCHAR(20), date_of_birth DATETIME, gender VARCHAR(1), weight VARCHAR(20), date_arrived DATETIME, date_adopted DATETIME, date_departed DATETIME); CREATE TABLE Professionals (professional_id INTEGER, role_code VARCHAR(10), first_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), last_name VARCHAR(50), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Treatments (treatment_id INTEGER, dog_id INTEGER, professional_id INTEGER, treatment_type_code VARCHAR(10), date_of_treatment DATETIME, cost_of_treatment DECIMAL(19,4));

hard

dog_kennels

SELECT first_name FROM Professionals UNION SELECT first_name FROM Owners EXCEPT SELECT name FROM Dogs

Which first names are used for professionals or owners but are not used as dog names?

CREATE TABLE `Breeds` ( `breed_code` VARCHAR(10) PRIMARY KEY , `breed_name` VARCHAR(80) ); CREATE TABLE `Charges` ( `charge_id` INTEGER PRIMARY KEY , `charge_type` VARCHAR(10), `charge_amount` DECIMAL(19,4) ); CREATE TABLE `Sizes` ( `size_code` VARCHAR(10) PRIMARY KEY , `size_description` VARCHAR(80) ); CREATE TABLE `Treatment_Types` ( `treatment_type_code` VARCHAR(10) PRIMARY KEY , `treatment_type_description` VARCHAR(80) ); CREATE TABLE `Owners` ( `owner_id` INTEGER PRIMARY KEY , `first_name` VARCHAR(50), `last_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Dogs` ( `dog_id` INTEGER PRIMARY KEY , `owner_id` INTEGER NOT NULL, `abandoned_yn` VARCHAR(1), `breed_code` VARCHAR(10) NOT NULL, `size_code` VARCHAR(10) NOT NULL, `name` VARCHAR(50), `age` VARCHAR(20), `date_of_birth` DATETIME, `gender` VARCHAR(1), `weight` VARCHAR(20), `date_arrived` DATETIME, `date_adopted` DATETIME, `date_departed` DATETIME, FOREIGN KEY (`breed_code` ) REFERENCES `Breeds`(`breed_code` ), FOREIGN KEY (`size_code` ) REFERENCES `Sizes`(`size_code` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ) ); CREATE TABLE `Professionals` ( `professional_id` INTEGER PRIMARY KEY , `role_code` VARCHAR(10) NOT NULL, `first_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `last_name` VARCHAR(50), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Treatments` ( `treatment_id` INTEGER PRIMARY KEY , `dog_id` INTEGER NOT NULL, `professional_id` INTEGER NOT NULL, `treatment_type_code` VARCHAR(10) NOT NULL, `date_of_treatment` DATETIME, `cost_of_treatment` DECIMAL(19,4), FOREIGN KEY (`treatment_type_code` ) REFERENCES `Treatment_Types`(`treatment_type_code` ), FOREIGN KEY (`professional_id` ) REFERENCES `Professionals`(`professional_id` ), FOREIGN KEY (`dog_id` ) REFERENCES `Dogs`(`dog_id` ) );

CREATE TABLE Breeds (breed_code VARCHAR(10), breed_name VARCHAR(80)); CREATE TABLE Charges (charge_id INTEGER, charge_type VARCHAR(10), charge_amount DECIMAL(19,4)); CREATE TABLE Sizes (size_code VARCHAR(10), size_description VARCHAR(80)); CREATE TABLE Treatment_Types (treatment_type_code VARCHAR(10), treatment_type_description VARCHAR(80)); CREATE TABLE Owners (owner_id INTEGER, first_name VARCHAR(50), last_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Dogs (dog_id INTEGER, owner_id INTEGER, abandoned_yn VARCHAR(1), breed_code VARCHAR(10), size_code VARCHAR(10), name VARCHAR(50), age VARCHAR(20), date_of_birth DATETIME, gender VARCHAR(1), weight VARCHAR(20), date_arrived DATETIME, date_adopted DATETIME, date_departed DATETIME); CREATE TABLE Professionals (professional_id INTEGER, role_code VARCHAR(10), first_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), last_name VARCHAR(50), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Treatments (treatment_id INTEGER, dog_id INTEGER, professional_id INTEGER, treatment_type_code VARCHAR(10), date_of_treatment DATETIME, cost_of_treatment DECIMAL(19,4));

hard

dog_kennels

SELECT first_name FROM Professionals UNION SELECT first_name FROM Owners EXCEPT SELECT name FROM Dogs

Find the first names that are used for professionals or owners but are not used as dog names.

CREATE TABLE `Breeds` ( `breed_code` VARCHAR(10) PRIMARY KEY , `breed_name` VARCHAR(80) ); CREATE TABLE `Charges` ( `charge_id` INTEGER PRIMARY KEY , `charge_type` VARCHAR(10), `charge_amount` DECIMAL(19,4) ); CREATE TABLE `Sizes` ( `size_code` VARCHAR(10) PRIMARY KEY , `size_description` VARCHAR(80) ); CREATE TABLE `Treatment_Types` ( `treatment_type_code` VARCHAR(10) PRIMARY KEY , `treatment_type_description` VARCHAR(80) ); CREATE TABLE `Owners` ( `owner_id` INTEGER PRIMARY KEY , `first_name` VARCHAR(50), `last_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Dogs` ( `dog_id` INTEGER PRIMARY KEY , `owner_id` INTEGER NOT NULL, `abandoned_yn` VARCHAR(1), `breed_code` VARCHAR(10) NOT NULL, `size_code` VARCHAR(10) NOT NULL, `name` VARCHAR(50), `age` VARCHAR(20), `date_of_birth` DATETIME, `gender` VARCHAR(1), `weight` VARCHAR(20), `date_arrived` DATETIME, `date_adopted` DATETIME, `date_departed` DATETIME, FOREIGN KEY (`breed_code` ) REFERENCES `Breeds`(`breed_code` ), FOREIGN KEY (`size_code` ) REFERENCES `Sizes`(`size_code` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ) ); CREATE TABLE `Professionals` ( `professional_id` INTEGER PRIMARY KEY , `role_code` VARCHAR(10) NOT NULL, `first_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `last_name` VARCHAR(50), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Treatments` ( `treatment_id` INTEGER PRIMARY KEY , `dog_id` INTEGER NOT NULL, `professional_id` INTEGER NOT NULL, `treatment_type_code` VARCHAR(10) NOT NULL, `date_of_treatment` DATETIME, `cost_of_treatment` DECIMAL(19,4), FOREIGN KEY (`treatment_type_code` ) REFERENCES `Treatment_Types`(`treatment_type_code` ), FOREIGN KEY (`professional_id` ) REFERENCES `Professionals`(`professional_id` ), FOREIGN KEY (`dog_id` ) REFERENCES `Dogs`(`dog_id` ) );

CREATE TABLE Breeds (breed_code VARCHAR(10), breed_name VARCHAR(80)); CREATE TABLE Charges (charge_id INTEGER, charge_type VARCHAR(10), charge_amount DECIMAL(19,4)); CREATE TABLE Sizes (size_code VARCHAR(10), size_description VARCHAR(80)); CREATE TABLE Treatment_Types (treatment_type_code VARCHAR(10), treatment_type_description VARCHAR(80)); CREATE TABLE Owners (owner_id INTEGER, first_name VARCHAR(50), last_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Dogs (dog_id INTEGER, owner_id INTEGER, abandoned_yn VARCHAR(1), breed_code VARCHAR(10), size_code VARCHAR(10), name VARCHAR(50), age VARCHAR(20), date_of_birth DATETIME, gender VARCHAR(1), weight VARCHAR(20), date_arrived DATETIME, date_adopted DATETIME, date_departed DATETIME); CREATE TABLE Professionals (professional_id INTEGER, role_code VARCHAR(10), first_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), last_name VARCHAR(50), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Treatments (treatment_id INTEGER, dog_id INTEGER, professional_id INTEGER, treatment_type_code VARCHAR(10), date_of_treatment DATETIME, cost_of_treatment DECIMAL(19,4));

hard

dog_kennels

SELECT professional_id , role_code , email_address FROM Professionals EXCEPT SELECT T1.professional_id , T1.role_code , T1.email_address FROM Professionals AS T1 JOIN Treatments AS T2 ON T1.professional_id = T2.professional_id

Which professional did not operate any treatment on dogs? List the professional's id, role and email.

CREATE TABLE `Breeds` ( `breed_code` VARCHAR(10) PRIMARY KEY , `breed_name` VARCHAR(80) ); CREATE TABLE `Charges` ( `charge_id` INTEGER PRIMARY KEY , `charge_type` VARCHAR(10), `charge_amount` DECIMAL(19,4) ); CREATE TABLE `Sizes` ( `size_code` VARCHAR(10) PRIMARY KEY , `size_description` VARCHAR(80) ); CREATE TABLE `Treatment_Types` ( `treatment_type_code` VARCHAR(10) PRIMARY KEY , `treatment_type_description` VARCHAR(80) ); CREATE TABLE `Owners` ( `owner_id` INTEGER PRIMARY KEY , `first_name` VARCHAR(50), `last_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Dogs` ( `dog_id` INTEGER PRIMARY KEY , `owner_id` INTEGER NOT NULL, `abandoned_yn` VARCHAR(1), `breed_code` VARCHAR(10) NOT NULL, `size_code` VARCHAR(10) NOT NULL, `name` VARCHAR(50), `age` VARCHAR(20), `date_of_birth` DATETIME, `gender` VARCHAR(1), `weight` VARCHAR(20), `date_arrived` DATETIME, `date_adopted` DATETIME, `date_departed` DATETIME, FOREIGN KEY (`breed_code` ) REFERENCES `Breeds`(`breed_code` ), FOREIGN KEY (`size_code` ) REFERENCES `Sizes`(`size_code` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ) ); CREATE TABLE `Professionals` ( `professional_id` INTEGER PRIMARY KEY , `role_code` VARCHAR(10) NOT NULL, `first_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `last_name` VARCHAR(50), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Treatments` ( `treatment_id` INTEGER PRIMARY KEY , `dog_id` INTEGER NOT NULL, `professional_id` INTEGER NOT NULL, `treatment_type_code` VARCHAR(10) NOT NULL, `date_of_treatment` DATETIME, `cost_of_treatment` DECIMAL(19,4), FOREIGN KEY (`treatment_type_code` ) REFERENCES `Treatment_Types`(`treatment_type_code` ), FOREIGN KEY (`professional_id` ) REFERENCES `Professionals`(`professional_id` ), FOREIGN KEY (`dog_id` ) REFERENCES `Dogs`(`dog_id` ) );

CREATE TABLE Breeds (breed_code VARCHAR(10), breed_name VARCHAR(80)); CREATE TABLE Charges (charge_id INTEGER, charge_type VARCHAR(10), charge_amount DECIMAL(19,4)); CREATE TABLE Sizes (size_code VARCHAR(10), size_description VARCHAR(80)); CREATE TABLE Treatment_Types (treatment_type_code VARCHAR(10), treatment_type_description VARCHAR(80)); CREATE TABLE Owners (owner_id INTEGER, first_name VARCHAR(50), last_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Dogs (dog_id INTEGER, owner_id INTEGER, abandoned_yn VARCHAR(1), breed_code VARCHAR(10), size_code VARCHAR(10), name VARCHAR(50), age VARCHAR(20), date_of_birth DATETIME, gender VARCHAR(1), weight VARCHAR(20), date_arrived DATETIME, date_adopted DATETIME, date_departed DATETIME); CREATE TABLE Professionals (professional_id INTEGER, role_code VARCHAR(10), first_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), last_name VARCHAR(50), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Treatments (treatment_id INTEGER, dog_id INTEGER, professional_id INTEGER, treatment_type_code VARCHAR(10), date_of_treatment DATETIME, cost_of_treatment DECIMAL(19,4));

extra

dog_kennels

SELECT professional_id , role_code , email_address FROM Professionals EXCEPT SELECT T1.professional_id , T1.role_code , T1.email_address FROM Professionals AS T1 JOIN Treatments AS T2 ON T1.professional_id = T2.professional_id

Give me the id, role and email of the professionals who did not perform any treatment on dogs.

CREATE TABLE `Breeds` ( `breed_code` VARCHAR(10) PRIMARY KEY , `breed_name` VARCHAR(80) ); CREATE TABLE `Charges` ( `charge_id` INTEGER PRIMARY KEY , `charge_type` VARCHAR(10), `charge_amount` DECIMAL(19,4) ); CREATE TABLE `Sizes` ( `size_code` VARCHAR(10) PRIMARY KEY , `size_description` VARCHAR(80) ); CREATE TABLE `Treatment_Types` ( `treatment_type_code` VARCHAR(10) PRIMARY KEY , `treatment_type_description` VARCHAR(80) ); CREATE TABLE `Owners` ( `owner_id` INTEGER PRIMARY KEY , `first_name` VARCHAR(50), `last_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Dogs` ( `dog_id` INTEGER PRIMARY KEY , `owner_id` INTEGER NOT NULL, `abandoned_yn` VARCHAR(1), `breed_code` VARCHAR(10) NOT NULL, `size_code` VARCHAR(10) NOT NULL, `name` VARCHAR(50), `age` VARCHAR(20), `date_of_birth` DATETIME, `gender` VARCHAR(1), `weight` VARCHAR(20), `date_arrived` DATETIME, `date_adopted` DATETIME, `date_departed` DATETIME, FOREIGN KEY (`breed_code` ) REFERENCES `Breeds`(`breed_code` ), FOREIGN KEY (`size_code` ) REFERENCES `Sizes`(`size_code` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ) ); CREATE TABLE `Professionals` ( `professional_id` INTEGER PRIMARY KEY , `role_code` VARCHAR(10) NOT NULL, `first_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `last_name` VARCHAR(50), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Treatments` ( `treatment_id` INTEGER PRIMARY KEY , `dog_id` INTEGER NOT NULL, `professional_id` INTEGER NOT NULL, `treatment_type_code` VARCHAR(10) NOT NULL, `date_of_treatment` DATETIME, `cost_of_treatment` DECIMAL(19,4), FOREIGN KEY (`treatment_type_code` ) REFERENCES `Treatment_Types`(`treatment_type_code` ), FOREIGN KEY (`professional_id` ) REFERENCES `Professionals`(`professional_id` ), FOREIGN KEY (`dog_id` ) REFERENCES `Dogs`(`dog_id` ) );

CREATE TABLE Breeds (breed_code VARCHAR(10), breed_name VARCHAR(80)); CREATE TABLE Charges (charge_id INTEGER, charge_type VARCHAR(10), charge_amount DECIMAL(19,4)); CREATE TABLE Sizes (size_code VARCHAR(10), size_description VARCHAR(80)); CREATE TABLE Treatment_Types (treatment_type_code VARCHAR(10), treatment_type_description VARCHAR(80)); CREATE TABLE Owners (owner_id INTEGER, first_name VARCHAR(50), last_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Dogs (dog_id INTEGER, owner_id INTEGER, abandoned_yn VARCHAR(1), breed_code VARCHAR(10), size_code VARCHAR(10), name VARCHAR(50), age VARCHAR(20), date_of_birth DATETIME, gender VARCHAR(1), weight VARCHAR(20), date_arrived DATETIME, date_adopted DATETIME, date_departed DATETIME); CREATE TABLE Professionals (professional_id INTEGER, role_code VARCHAR(10), first_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), last_name VARCHAR(50), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Treatments (treatment_id INTEGER, dog_id INTEGER, professional_id INTEGER, treatment_type_code VARCHAR(10), date_of_treatment DATETIME, cost_of_treatment DECIMAL(19,4));

extra

dog_kennels

SELECT T1.owner_id , T2.first_name , T2.last_name FROM Dogs AS T1 JOIN Owners AS T2 ON T1.owner_id = T2.owner_id GROUP BY T1.owner_id ORDER BY count(*) DESC LIMIT 1

Which owner owns the most dogs? List the owner id, first name and last name.

CREATE TABLE `Breeds` ( `breed_code` VARCHAR(10) PRIMARY KEY , `breed_name` VARCHAR(80) ); CREATE TABLE `Charges` ( `charge_id` INTEGER PRIMARY KEY , `charge_type` VARCHAR(10), `charge_amount` DECIMAL(19,4) ); CREATE TABLE `Sizes` ( `size_code` VARCHAR(10) PRIMARY KEY , `size_description` VARCHAR(80) ); CREATE TABLE `Treatment_Types` ( `treatment_type_code` VARCHAR(10) PRIMARY KEY , `treatment_type_description` VARCHAR(80) ); CREATE TABLE `Owners` ( `owner_id` INTEGER PRIMARY KEY , `first_name` VARCHAR(50), `last_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Dogs` ( `dog_id` INTEGER PRIMARY KEY , `owner_id` INTEGER NOT NULL, `abandoned_yn` VARCHAR(1), `breed_code` VARCHAR(10) NOT NULL, `size_code` VARCHAR(10) NOT NULL, `name` VARCHAR(50), `age` VARCHAR(20), `date_of_birth` DATETIME, `gender` VARCHAR(1), `weight` VARCHAR(20), `date_arrived` DATETIME, `date_adopted` DATETIME, `date_departed` DATETIME, FOREIGN KEY (`breed_code` ) REFERENCES `Breeds`(`breed_code` ), FOREIGN KEY (`size_code` ) REFERENCES `Sizes`(`size_code` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ) ); CREATE TABLE `Professionals` ( `professional_id` INTEGER PRIMARY KEY , `role_code` VARCHAR(10) NOT NULL, `first_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `last_name` VARCHAR(50), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Treatments` ( `treatment_id` INTEGER PRIMARY KEY , `dog_id` INTEGER NOT NULL, `professional_id` INTEGER NOT NULL, `treatment_type_code` VARCHAR(10) NOT NULL, `date_of_treatment` DATETIME, `cost_of_treatment` DECIMAL(19,4), FOREIGN KEY (`treatment_type_code` ) REFERENCES `Treatment_Types`(`treatment_type_code` ), FOREIGN KEY (`professional_id` ) REFERENCES `Professionals`(`professional_id` ), FOREIGN KEY (`dog_id` ) REFERENCES `Dogs`(`dog_id` ) );

CREATE TABLE Breeds (breed_code VARCHAR(10), breed_name VARCHAR(80)); CREATE TABLE Charges (charge_id INTEGER, charge_type VARCHAR(10), charge_amount DECIMAL(19,4)); CREATE TABLE Sizes (size_code VARCHAR(10), size_description VARCHAR(80)); CREATE TABLE Treatment_Types (treatment_type_code VARCHAR(10), treatment_type_description VARCHAR(80)); CREATE TABLE Owners (owner_id INTEGER, first_name VARCHAR(50), last_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Dogs (dog_id INTEGER, owner_id INTEGER, abandoned_yn VARCHAR(1), breed_code VARCHAR(10), size_code VARCHAR(10), name VARCHAR(50), age VARCHAR(20), date_of_birth DATETIME, gender VARCHAR(1), weight VARCHAR(20), date_arrived DATETIME, date_adopted DATETIME, date_departed DATETIME); CREATE TABLE Professionals (professional_id INTEGER, role_code VARCHAR(10), first_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), last_name VARCHAR(50), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Treatments (treatment_id INTEGER, dog_id INTEGER, professional_id INTEGER, treatment_type_code VARCHAR(10), date_of_treatment DATETIME, cost_of_treatment DECIMAL(19,4));

extra

dog_kennels

SELECT T1.owner_id , T2.first_name , T2.last_name FROM Dogs AS T1 JOIN Owners AS T2 ON T1.owner_id = T2.owner_id GROUP BY T1.owner_id ORDER BY count(*) DESC LIMIT 1

Return the owner id, first name and last name of the owner who has the most dogs.

CREATE TABLE `Breeds` ( `breed_code` VARCHAR(10) PRIMARY KEY , `breed_name` VARCHAR(80) ); CREATE TABLE `Charges` ( `charge_id` INTEGER PRIMARY KEY , `charge_type` VARCHAR(10), `charge_amount` DECIMAL(19,4) ); CREATE TABLE `Sizes` ( `size_code` VARCHAR(10) PRIMARY KEY , `size_description` VARCHAR(80) ); CREATE TABLE `Treatment_Types` ( `treatment_type_code` VARCHAR(10) PRIMARY KEY , `treatment_type_description` VARCHAR(80) ); CREATE TABLE `Owners` ( `owner_id` INTEGER PRIMARY KEY , `first_name` VARCHAR(50), `last_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Dogs` ( `dog_id` INTEGER PRIMARY KEY , `owner_id` INTEGER NOT NULL, `abandoned_yn` VARCHAR(1), `breed_code` VARCHAR(10) NOT NULL, `size_code` VARCHAR(10) NOT NULL, `name` VARCHAR(50), `age` VARCHAR(20), `date_of_birth` DATETIME, `gender` VARCHAR(1), `weight` VARCHAR(20), `date_arrived` DATETIME, `date_adopted` DATETIME, `date_departed` DATETIME, FOREIGN KEY (`breed_code` ) REFERENCES `Breeds`(`breed_code` ), FOREIGN KEY (`size_code` ) REFERENCES `Sizes`(`size_code` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ) ); CREATE TABLE `Professionals` ( `professional_id` INTEGER PRIMARY KEY , `role_code` VARCHAR(10) NOT NULL, `first_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `last_name` VARCHAR(50), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Treatments` ( `treatment_id` INTEGER PRIMARY KEY , `dog_id` INTEGER NOT NULL, `professional_id` INTEGER NOT NULL, `treatment_type_code` VARCHAR(10) NOT NULL, `date_of_treatment` DATETIME, `cost_of_treatment` DECIMAL(19,4), FOREIGN KEY (`treatment_type_code` ) REFERENCES `Treatment_Types`(`treatment_type_code` ), FOREIGN KEY (`professional_id` ) REFERENCES `Professionals`(`professional_id` ), FOREIGN KEY (`dog_id` ) REFERENCES `Dogs`(`dog_id` ) );

CREATE TABLE Breeds (breed_code VARCHAR(10), breed_name VARCHAR(80)); CREATE TABLE Charges (charge_id INTEGER, charge_type VARCHAR(10), charge_amount DECIMAL(19,4)); CREATE TABLE Sizes (size_code VARCHAR(10), size_description VARCHAR(80)); CREATE TABLE Treatment_Types (treatment_type_code VARCHAR(10), treatment_type_description VARCHAR(80)); CREATE TABLE Owners (owner_id INTEGER, first_name VARCHAR(50), last_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Dogs (dog_id INTEGER, owner_id INTEGER, abandoned_yn VARCHAR(1), breed_code VARCHAR(10), size_code VARCHAR(10), name VARCHAR(50), age VARCHAR(20), date_of_birth DATETIME, gender VARCHAR(1), weight VARCHAR(20), date_arrived DATETIME, date_adopted DATETIME, date_departed DATETIME); CREATE TABLE Professionals (professional_id INTEGER, role_code VARCHAR(10), first_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), last_name VARCHAR(50), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Treatments (treatment_id INTEGER, dog_id INTEGER, professional_id INTEGER, treatment_type_code VARCHAR(10), date_of_treatment DATETIME, cost_of_treatment DECIMAL(19,4));

extra

dog_kennels

SELECT T1.professional_id , T1.role_code , T1.first_name FROM Professionals AS T1 JOIN Treatments AS T2 ON T1.professional_id = T2.professional_id GROUP BY T1.professional_id HAVING count(*) >= 2

Which professionals have done at least two treatments? List the professional's id, role, and first name.

CREATE TABLE `Breeds` ( `breed_code` VARCHAR(10) PRIMARY KEY , `breed_name` VARCHAR(80) ); CREATE TABLE `Charges` ( `charge_id` INTEGER PRIMARY KEY , `charge_type` VARCHAR(10), `charge_amount` DECIMAL(19,4) ); CREATE TABLE `Sizes` ( `size_code` VARCHAR(10) PRIMARY KEY , `size_description` VARCHAR(80) ); CREATE TABLE `Treatment_Types` ( `treatment_type_code` VARCHAR(10) PRIMARY KEY , `treatment_type_description` VARCHAR(80) ); CREATE TABLE `Owners` ( `owner_id` INTEGER PRIMARY KEY , `first_name` VARCHAR(50), `last_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Dogs` ( `dog_id` INTEGER PRIMARY KEY , `owner_id` INTEGER NOT NULL, `abandoned_yn` VARCHAR(1), `breed_code` VARCHAR(10) NOT NULL, `size_code` VARCHAR(10) NOT NULL, `name` VARCHAR(50), `age` VARCHAR(20), `date_of_birth` DATETIME, `gender` VARCHAR(1), `weight` VARCHAR(20), `date_arrived` DATETIME, `date_adopted` DATETIME, `date_departed` DATETIME, FOREIGN KEY (`breed_code` ) REFERENCES `Breeds`(`breed_code` ), FOREIGN KEY (`size_code` ) REFERENCES `Sizes`(`size_code` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ) ); CREATE TABLE `Professionals` ( `professional_id` INTEGER PRIMARY KEY , `role_code` VARCHAR(10) NOT NULL, `first_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `last_name` VARCHAR(50), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Treatments` ( `treatment_id` INTEGER PRIMARY KEY , `dog_id` INTEGER NOT NULL, `professional_id` INTEGER NOT NULL, `treatment_type_code` VARCHAR(10) NOT NULL, `date_of_treatment` DATETIME, `cost_of_treatment` DECIMAL(19,4), FOREIGN KEY (`treatment_type_code` ) REFERENCES `Treatment_Types`(`treatment_type_code` ), FOREIGN KEY (`professional_id` ) REFERENCES `Professionals`(`professional_id` ), FOREIGN KEY (`dog_id` ) REFERENCES `Dogs`(`dog_id` ) );

CREATE TABLE Breeds (breed_code VARCHAR(10), breed_name VARCHAR(80)); CREATE TABLE Charges (charge_id INTEGER, charge_type VARCHAR(10), charge_amount DECIMAL(19,4)); CREATE TABLE Sizes (size_code VARCHAR(10), size_description VARCHAR(80)); CREATE TABLE Treatment_Types (treatment_type_code VARCHAR(10), treatment_type_description VARCHAR(80)); CREATE TABLE Owners (owner_id INTEGER, first_name VARCHAR(50), last_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Dogs (dog_id INTEGER, owner_id INTEGER, abandoned_yn VARCHAR(1), breed_code VARCHAR(10), size_code VARCHAR(10), name VARCHAR(50), age VARCHAR(20), date_of_birth DATETIME, gender VARCHAR(1), weight VARCHAR(20), date_arrived DATETIME, date_adopted DATETIME, date_departed DATETIME); CREATE TABLE Professionals (professional_id INTEGER, role_code VARCHAR(10), first_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), last_name VARCHAR(50), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Treatments (treatment_id INTEGER, dog_id INTEGER, professional_id INTEGER, treatment_type_code VARCHAR(10), date_of_treatment DATETIME, cost_of_treatment DECIMAL(19,4));

medium

dog_kennels

SELECT T1.professional_id , T1.role_code , T1.first_name FROM Professionals AS T1 JOIN Treatments AS T2 ON T1.professional_id = T2.professional_id GROUP BY T1.professional_id HAVING count(*) >= 2

What are the id, role, and first name of the professionals who have performed two or more treatments?

CREATE TABLE `Breeds` ( `breed_code` VARCHAR(10) PRIMARY KEY , `breed_name` VARCHAR(80) ); CREATE TABLE `Charges` ( `charge_id` INTEGER PRIMARY KEY , `charge_type` VARCHAR(10), `charge_amount` DECIMAL(19,4) ); CREATE TABLE `Sizes` ( `size_code` VARCHAR(10) PRIMARY KEY , `size_description` VARCHAR(80) ); CREATE TABLE `Treatment_Types` ( `treatment_type_code` VARCHAR(10) PRIMARY KEY , `treatment_type_description` VARCHAR(80) ); CREATE TABLE `Owners` ( `owner_id` INTEGER PRIMARY KEY , `first_name` VARCHAR(50), `last_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Dogs` ( `dog_id` INTEGER PRIMARY KEY , `owner_id` INTEGER NOT NULL, `abandoned_yn` VARCHAR(1), `breed_code` VARCHAR(10) NOT NULL, `size_code` VARCHAR(10) NOT NULL, `name` VARCHAR(50), `age` VARCHAR(20), `date_of_birth` DATETIME, `gender` VARCHAR(1), `weight` VARCHAR(20), `date_arrived` DATETIME, `date_adopted` DATETIME, `date_departed` DATETIME, FOREIGN KEY (`breed_code` ) REFERENCES `Breeds`(`breed_code` ), FOREIGN KEY (`size_code` ) REFERENCES `Sizes`(`size_code` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ) ); CREATE TABLE `Professionals` ( `professional_id` INTEGER PRIMARY KEY , `role_code` VARCHAR(10) NOT NULL, `first_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `last_name` VARCHAR(50), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Treatments` ( `treatment_id` INTEGER PRIMARY KEY , `dog_id` INTEGER NOT NULL, `professional_id` INTEGER NOT NULL, `treatment_type_code` VARCHAR(10) NOT NULL, `date_of_treatment` DATETIME, `cost_of_treatment` DECIMAL(19,4), FOREIGN KEY (`treatment_type_code` ) REFERENCES `Treatment_Types`(`treatment_type_code` ), FOREIGN KEY (`professional_id` ) REFERENCES `Professionals`(`professional_id` ), FOREIGN KEY (`dog_id` ) REFERENCES `Dogs`(`dog_id` ) );

CREATE TABLE Breeds (breed_code VARCHAR(10), breed_name VARCHAR(80)); CREATE TABLE Charges (charge_id INTEGER, charge_type VARCHAR(10), charge_amount DECIMAL(19,4)); CREATE TABLE Sizes (size_code VARCHAR(10), size_description VARCHAR(80)); CREATE TABLE Treatment_Types (treatment_type_code VARCHAR(10), treatment_type_description VARCHAR(80)); CREATE TABLE Owners (owner_id INTEGER, first_name VARCHAR(50), last_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Dogs (dog_id INTEGER, owner_id INTEGER, abandoned_yn VARCHAR(1), breed_code VARCHAR(10), size_code VARCHAR(10), name VARCHAR(50), age VARCHAR(20), date_of_birth DATETIME, gender VARCHAR(1), weight VARCHAR(20), date_arrived DATETIME, date_adopted DATETIME, date_departed DATETIME); CREATE TABLE Professionals (professional_id INTEGER, role_code VARCHAR(10), first_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), last_name VARCHAR(50), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Treatments (treatment_id INTEGER, dog_id INTEGER, professional_id INTEGER, treatment_type_code VARCHAR(10), date_of_treatment DATETIME, cost_of_treatment DECIMAL(19,4));

medium

dog_kennels

SELECT T1.breed_name FROM Breeds AS T1 JOIN Dogs AS T2 ON T1.breed_code = T2.breed_code GROUP BY T1.breed_name ORDER BY count(*) DESC LIMIT 1

What is the name of the breed with the most dogs?

CREATE TABLE `Breeds` ( `breed_code` VARCHAR(10) PRIMARY KEY , `breed_name` VARCHAR(80) ); CREATE TABLE `Charges` ( `charge_id` INTEGER PRIMARY KEY , `charge_type` VARCHAR(10), `charge_amount` DECIMAL(19,4) ); CREATE TABLE `Sizes` ( `size_code` VARCHAR(10) PRIMARY KEY , `size_description` VARCHAR(80) ); CREATE TABLE `Treatment_Types` ( `treatment_type_code` VARCHAR(10) PRIMARY KEY , `treatment_type_description` VARCHAR(80) ); CREATE TABLE `Owners` ( `owner_id` INTEGER PRIMARY KEY , `first_name` VARCHAR(50), `last_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Dogs` ( `dog_id` INTEGER PRIMARY KEY , `owner_id` INTEGER NOT NULL, `abandoned_yn` VARCHAR(1), `breed_code` VARCHAR(10) NOT NULL, `size_code` VARCHAR(10) NOT NULL, `name` VARCHAR(50), `age` VARCHAR(20), `date_of_birth` DATETIME, `gender` VARCHAR(1), `weight` VARCHAR(20), `date_arrived` DATETIME, `date_adopted` DATETIME, `date_departed` DATETIME, FOREIGN KEY (`breed_code` ) REFERENCES `Breeds`(`breed_code` ), FOREIGN KEY (`size_code` ) REFERENCES `Sizes`(`size_code` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ) ); CREATE TABLE `Professionals` ( `professional_id` INTEGER PRIMARY KEY , `role_code` VARCHAR(10) NOT NULL, `first_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `last_name` VARCHAR(50), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Treatments` ( `treatment_id` INTEGER PRIMARY KEY , `dog_id` INTEGER NOT NULL, `professional_id` INTEGER NOT NULL, `treatment_type_code` VARCHAR(10) NOT NULL, `date_of_treatment` DATETIME, `cost_of_treatment` DECIMAL(19,4), FOREIGN KEY (`treatment_type_code` ) REFERENCES `Treatment_Types`(`treatment_type_code` ), FOREIGN KEY (`professional_id` ) REFERENCES `Professionals`(`professional_id` ), FOREIGN KEY (`dog_id` ) REFERENCES `Dogs`(`dog_id` ) );

CREATE TABLE Breeds (breed_code VARCHAR(10), breed_name VARCHAR(80)); CREATE TABLE Charges (charge_id INTEGER, charge_type VARCHAR(10), charge_amount DECIMAL(19,4)); CREATE TABLE Sizes (size_code VARCHAR(10), size_description VARCHAR(80)); CREATE TABLE Treatment_Types (treatment_type_code VARCHAR(10), treatment_type_description VARCHAR(80)); CREATE TABLE Owners (owner_id INTEGER, first_name VARCHAR(50), last_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Dogs (dog_id INTEGER, owner_id INTEGER, abandoned_yn VARCHAR(1), breed_code VARCHAR(10), size_code VARCHAR(10), name VARCHAR(50), age VARCHAR(20), date_of_birth DATETIME, gender VARCHAR(1), weight VARCHAR(20), date_arrived DATETIME, date_adopted DATETIME, date_departed DATETIME); CREATE TABLE Professionals (professional_id INTEGER, role_code VARCHAR(10), first_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), last_name VARCHAR(50), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Treatments (treatment_id INTEGER, dog_id INTEGER, professional_id INTEGER, treatment_type_code VARCHAR(10), date_of_treatment DATETIME, cost_of_treatment DECIMAL(19,4));

extra

dog_kennels

SELECT T1.breed_name FROM Breeds AS T1 JOIN Dogs AS T2 ON T1.breed_code = T2.breed_code GROUP BY T1.breed_name ORDER BY count(*) DESC LIMIT 1

Which breed do the most dogs have? Give me the breed name.

CREATE TABLE `Breeds` ( `breed_code` VARCHAR(10) PRIMARY KEY , `breed_name` VARCHAR(80) ); CREATE TABLE `Charges` ( `charge_id` INTEGER PRIMARY KEY , `charge_type` VARCHAR(10), `charge_amount` DECIMAL(19,4) ); CREATE TABLE `Sizes` ( `size_code` VARCHAR(10) PRIMARY KEY , `size_description` VARCHAR(80) ); CREATE TABLE `Treatment_Types` ( `treatment_type_code` VARCHAR(10) PRIMARY KEY , `treatment_type_description` VARCHAR(80) ); CREATE TABLE `Owners` ( `owner_id` INTEGER PRIMARY KEY , `first_name` VARCHAR(50), `last_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Dogs` ( `dog_id` INTEGER PRIMARY KEY , `owner_id` INTEGER NOT NULL, `abandoned_yn` VARCHAR(1), `breed_code` VARCHAR(10) NOT NULL, `size_code` VARCHAR(10) NOT NULL, `name` VARCHAR(50), `age` VARCHAR(20), `date_of_birth` DATETIME, `gender` VARCHAR(1), `weight` VARCHAR(20), `date_arrived` DATETIME, `date_adopted` DATETIME, `date_departed` DATETIME, FOREIGN KEY (`breed_code` ) REFERENCES `Breeds`(`breed_code` ), FOREIGN KEY (`size_code` ) REFERENCES `Sizes`(`size_code` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ) ); CREATE TABLE `Professionals` ( `professional_id` INTEGER PRIMARY KEY , `role_code` VARCHAR(10) NOT NULL, `first_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `last_name` VARCHAR(50), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Treatments` ( `treatment_id` INTEGER PRIMARY KEY , `dog_id` INTEGER NOT NULL, `professional_id` INTEGER NOT NULL, `treatment_type_code` VARCHAR(10) NOT NULL, `date_of_treatment` DATETIME, `cost_of_treatment` DECIMAL(19,4), FOREIGN KEY (`treatment_type_code` ) REFERENCES `Treatment_Types`(`treatment_type_code` ), FOREIGN KEY (`professional_id` ) REFERENCES `Professionals`(`professional_id` ), FOREIGN KEY (`dog_id` ) REFERENCES `Dogs`(`dog_id` ) );

CREATE TABLE Breeds (breed_code VARCHAR(10), breed_name VARCHAR(80)); CREATE TABLE Charges (charge_id INTEGER, charge_type VARCHAR(10), charge_amount DECIMAL(19,4)); CREATE TABLE Sizes (size_code VARCHAR(10), size_description VARCHAR(80)); CREATE TABLE Treatment_Types (treatment_type_code VARCHAR(10), treatment_type_description VARCHAR(80)); CREATE TABLE Owners (owner_id INTEGER, first_name VARCHAR(50), last_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Dogs (dog_id INTEGER, owner_id INTEGER, abandoned_yn VARCHAR(1), breed_code VARCHAR(10), size_code VARCHAR(10), name VARCHAR(50), age VARCHAR(20), date_of_birth DATETIME, gender VARCHAR(1), weight VARCHAR(20), date_arrived DATETIME, date_adopted DATETIME, date_departed DATETIME); CREATE TABLE Professionals (professional_id INTEGER, role_code VARCHAR(10), first_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), last_name VARCHAR(50), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Treatments (treatment_id INTEGER, dog_id INTEGER, professional_id INTEGER, treatment_type_code VARCHAR(10), date_of_treatment DATETIME, cost_of_treatment DECIMAL(19,4));

extra

dog_kennels

SELECT T1.owner_id , T1.last_name FROM Owners AS T1 JOIN Dogs AS T2 ON T1.owner_id = T2.owner_id JOIN Treatments AS T3 ON T2.dog_id = T3.dog_id GROUP BY T1.owner_id ORDER BY count(*) DESC LIMIT 1

Which owner has paid for the most treatments on his or her dogs? List the owner id and last name.

CREATE TABLE `Breeds` ( `breed_code` VARCHAR(10) PRIMARY KEY , `breed_name` VARCHAR(80) ); CREATE TABLE `Charges` ( `charge_id` INTEGER PRIMARY KEY , `charge_type` VARCHAR(10), `charge_amount` DECIMAL(19,4) ); CREATE TABLE `Sizes` ( `size_code` VARCHAR(10) PRIMARY KEY , `size_description` VARCHAR(80) ); CREATE TABLE `Treatment_Types` ( `treatment_type_code` VARCHAR(10) PRIMARY KEY , `treatment_type_description` VARCHAR(80) ); CREATE TABLE `Owners` ( `owner_id` INTEGER PRIMARY KEY , `first_name` VARCHAR(50), `last_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Dogs` ( `dog_id` INTEGER PRIMARY KEY , `owner_id` INTEGER NOT NULL, `abandoned_yn` VARCHAR(1), `breed_code` VARCHAR(10) NOT NULL, `size_code` VARCHAR(10) NOT NULL, `name` VARCHAR(50), `age` VARCHAR(20), `date_of_birth` DATETIME, `gender` VARCHAR(1), `weight` VARCHAR(20), `date_arrived` DATETIME, `date_adopted` DATETIME, `date_departed` DATETIME, FOREIGN KEY (`breed_code` ) REFERENCES `Breeds`(`breed_code` ), FOREIGN KEY (`size_code` ) REFERENCES `Sizes`(`size_code` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ) ); CREATE TABLE `Professionals` ( `professional_id` INTEGER PRIMARY KEY , `role_code` VARCHAR(10) NOT NULL, `first_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `last_name` VARCHAR(50), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Treatments` ( `treatment_id` INTEGER PRIMARY KEY , `dog_id` INTEGER NOT NULL, `professional_id` INTEGER NOT NULL, `treatment_type_code` VARCHAR(10) NOT NULL, `date_of_treatment` DATETIME, `cost_of_treatment` DECIMAL(19,4), FOREIGN KEY (`treatment_type_code` ) REFERENCES `Treatment_Types`(`treatment_type_code` ), FOREIGN KEY (`professional_id` ) REFERENCES `Professionals`(`professional_id` ), FOREIGN KEY (`dog_id` ) REFERENCES `Dogs`(`dog_id` ) );

CREATE TABLE Breeds (breed_code VARCHAR(10), breed_name VARCHAR(80)); CREATE TABLE Charges (charge_id INTEGER, charge_type VARCHAR(10), charge_amount DECIMAL(19,4)); CREATE TABLE Sizes (size_code VARCHAR(10), size_description VARCHAR(80)); CREATE TABLE Treatment_Types (treatment_type_code VARCHAR(10), treatment_type_description VARCHAR(80)); CREATE TABLE Owners (owner_id INTEGER, first_name VARCHAR(50), last_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Dogs (dog_id INTEGER, owner_id INTEGER, abandoned_yn VARCHAR(1), breed_code VARCHAR(10), size_code VARCHAR(10), name VARCHAR(50), age VARCHAR(20), date_of_birth DATETIME, gender VARCHAR(1), weight VARCHAR(20), date_arrived DATETIME, date_adopted DATETIME, date_departed DATETIME); CREATE TABLE Professionals (professional_id INTEGER, role_code VARCHAR(10), first_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), last_name VARCHAR(50), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Treatments (treatment_id INTEGER, dog_id INTEGER, professional_id INTEGER, treatment_type_code VARCHAR(10), date_of_treatment DATETIME, cost_of_treatment DECIMAL(19,4));

extra

dog_kennels

SELECT T1.owner_id , T1.last_name FROM Owners AS T1 JOIN Dogs AS T2 ON T1.owner_id = T2.owner_id JOIN Treatments AS T3 ON T2.dog_id = T3.dog_id GROUP BY T1.owner_id ORDER BY count(*) DESC LIMIT 1

Tell me the owner id and last name of the owner who spent the most on treatments of his or her dogs.

CREATE TABLE `Breeds` ( `breed_code` VARCHAR(10) PRIMARY KEY , `breed_name` VARCHAR(80) ); CREATE TABLE `Charges` ( `charge_id` INTEGER PRIMARY KEY , `charge_type` VARCHAR(10), `charge_amount` DECIMAL(19,4) ); CREATE TABLE `Sizes` ( `size_code` VARCHAR(10) PRIMARY KEY , `size_description` VARCHAR(80) ); CREATE TABLE `Treatment_Types` ( `treatment_type_code` VARCHAR(10) PRIMARY KEY , `treatment_type_description` VARCHAR(80) ); CREATE TABLE `Owners` ( `owner_id` INTEGER PRIMARY KEY , `first_name` VARCHAR(50), `last_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Dogs` ( `dog_id` INTEGER PRIMARY KEY , `owner_id` INTEGER NOT NULL, `abandoned_yn` VARCHAR(1), `breed_code` VARCHAR(10) NOT NULL, `size_code` VARCHAR(10) NOT NULL, `name` VARCHAR(50), `age` VARCHAR(20), `date_of_birth` DATETIME, `gender` VARCHAR(1), `weight` VARCHAR(20), `date_arrived` DATETIME, `date_adopted` DATETIME, `date_departed` DATETIME, FOREIGN KEY (`breed_code` ) REFERENCES `Breeds`(`breed_code` ), FOREIGN KEY (`size_code` ) REFERENCES `Sizes`(`size_code` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ) ); CREATE TABLE `Professionals` ( `professional_id` INTEGER PRIMARY KEY , `role_code` VARCHAR(10) NOT NULL, `first_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `last_name` VARCHAR(50), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Treatments` ( `treatment_id` INTEGER PRIMARY KEY , `dog_id` INTEGER NOT NULL, `professional_id` INTEGER NOT NULL, `treatment_type_code` VARCHAR(10) NOT NULL, `date_of_treatment` DATETIME, `cost_of_treatment` DECIMAL(19,4), FOREIGN KEY (`treatment_type_code` ) REFERENCES `Treatment_Types`(`treatment_type_code` ), FOREIGN KEY (`professional_id` ) REFERENCES `Professionals`(`professional_id` ), FOREIGN KEY (`dog_id` ) REFERENCES `Dogs`(`dog_id` ) );

CREATE TABLE Breeds (breed_code VARCHAR(10), breed_name VARCHAR(80)); CREATE TABLE Charges (charge_id INTEGER, charge_type VARCHAR(10), charge_amount DECIMAL(19,4)); CREATE TABLE Sizes (size_code VARCHAR(10), size_description VARCHAR(80)); CREATE TABLE Treatment_Types (treatment_type_code VARCHAR(10), treatment_type_description VARCHAR(80)); CREATE TABLE Owners (owner_id INTEGER, first_name VARCHAR(50), last_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Dogs (dog_id INTEGER, owner_id INTEGER, abandoned_yn VARCHAR(1), breed_code VARCHAR(10), size_code VARCHAR(10), name VARCHAR(50), age VARCHAR(20), date_of_birth DATETIME, gender VARCHAR(1), weight VARCHAR(20), date_arrived DATETIME, date_adopted DATETIME, date_departed DATETIME); CREATE TABLE Professionals (professional_id INTEGER, role_code VARCHAR(10), first_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), last_name VARCHAR(50), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Treatments (treatment_id INTEGER, dog_id INTEGER, professional_id INTEGER, treatment_type_code VARCHAR(10), date_of_treatment DATETIME, cost_of_treatment DECIMAL(19,4));

extra

dog_kennels

SELECT T1.treatment_type_description FROM Treatment_types AS T1 JOIN Treatments AS T2 ON T1.treatment_type_code = T2.treatment_type_code GROUP BY T1.treatment_type_code ORDER BY sum(cost_of_treatment) ASC LIMIT 1

What is the description of the treatment type that costs the least money in total?

CREATE TABLE `Breeds` ( `breed_code` VARCHAR(10) PRIMARY KEY , `breed_name` VARCHAR(80) ); CREATE TABLE `Charges` ( `charge_id` INTEGER PRIMARY KEY , `charge_type` VARCHAR(10), `charge_amount` DECIMAL(19,4) ); CREATE TABLE `Sizes` ( `size_code` VARCHAR(10) PRIMARY KEY , `size_description` VARCHAR(80) ); CREATE TABLE `Treatment_Types` ( `treatment_type_code` VARCHAR(10) PRIMARY KEY , `treatment_type_description` VARCHAR(80) ); CREATE TABLE `Owners` ( `owner_id` INTEGER PRIMARY KEY , `first_name` VARCHAR(50), `last_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Dogs` ( `dog_id` INTEGER PRIMARY KEY , `owner_id` INTEGER NOT NULL, `abandoned_yn` VARCHAR(1), `breed_code` VARCHAR(10) NOT NULL, `size_code` VARCHAR(10) NOT NULL, `name` VARCHAR(50), `age` VARCHAR(20), `date_of_birth` DATETIME, `gender` VARCHAR(1), `weight` VARCHAR(20), `date_arrived` DATETIME, `date_adopted` DATETIME, `date_departed` DATETIME, FOREIGN KEY (`breed_code` ) REFERENCES `Breeds`(`breed_code` ), FOREIGN KEY (`size_code` ) REFERENCES `Sizes`(`size_code` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ) ); CREATE TABLE `Professionals` ( `professional_id` INTEGER PRIMARY KEY , `role_code` VARCHAR(10) NOT NULL, `first_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `last_name` VARCHAR(50), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Treatments` ( `treatment_id` INTEGER PRIMARY KEY , `dog_id` INTEGER NOT NULL, `professional_id` INTEGER NOT NULL, `treatment_type_code` VARCHAR(10) NOT NULL, `date_of_treatment` DATETIME, `cost_of_treatment` DECIMAL(19,4), FOREIGN KEY (`treatment_type_code` ) REFERENCES `Treatment_Types`(`treatment_type_code` ), FOREIGN KEY (`professional_id` ) REFERENCES `Professionals`(`professional_id` ), FOREIGN KEY (`dog_id` ) REFERENCES `Dogs`(`dog_id` ) );

CREATE TABLE Breeds (breed_code VARCHAR(10), breed_name VARCHAR(80)); CREATE TABLE Charges (charge_id INTEGER, charge_type VARCHAR(10), charge_amount DECIMAL(19,4)); CREATE TABLE Sizes (size_code VARCHAR(10), size_description VARCHAR(80)); CREATE TABLE Treatment_Types (treatment_type_code VARCHAR(10), treatment_type_description VARCHAR(80)); CREATE TABLE Owners (owner_id INTEGER, first_name VARCHAR(50), last_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Dogs (dog_id INTEGER, owner_id INTEGER, abandoned_yn VARCHAR(1), breed_code VARCHAR(10), size_code VARCHAR(10), name VARCHAR(50), age VARCHAR(20), date_of_birth DATETIME, gender VARCHAR(1), weight VARCHAR(20), date_arrived DATETIME, date_adopted DATETIME, date_departed DATETIME); CREATE TABLE Professionals (professional_id INTEGER, role_code VARCHAR(10), first_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), last_name VARCHAR(50), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Treatments (treatment_id INTEGER, dog_id INTEGER, professional_id INTEGER, treatment_type_code VARCHAR(10), date_of_treatment DATETIME, cost_of_treatment DECIMAL(19,4));

extra

dog_kennels

SELECT T1.treatment_type_description FROM Treatment_types AS T1 JOIN Treatments AS T2 ON T1.treatment_type_code = T2.treatment_type_code GROUP BY T1.treatment_type_code ORDER BY sum(cost_of_treatment) ASC LIMIT 1

Give me the description of the treatment type whose total cost is the lowest.

CREATE TABLE `Breeds` ( `breed_code` VARCHAR(10) PRIMARY KEY , `breed_name` VARCHAR(80) ); CREATE TABLE `Charges` ( `charge_id` INTEGER PRIMARY KEY , `charge_type` VARCHAR(10), `charge_amount` DECIMAL(19,4) ); CREATE TABLE `Sizes` ( `size_code` VARCHAR(10) PRIMARY KEY , `size_description` VARCHAR(80) ); CREATE TABLE `Treatment_Types` ( `treatment_type_code` VARCHAR(10) PRIMARY KEY , `treatment_type_description` VARCHAR(80) ); CREATE TABLE `Owners` ( `owner_id` INTEGER PRIMARY KEY , `first_name` VARCHAR(50), `last_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Dogs` ( `dog_id` INTEGER PRIMARY KEY , `owner_id` INTEGER NOT NULL, `abandoned_yn` VARCHAR(1), `breed_code` VARCHAR(10) NOT NULL, `size_code` VARCHAR(10) NOT NULL, `name` VARCHAR(50), `age` VARCHAR(20), `date_of_birth` DATETIME, `gender` VARCHAR(1), `weight` VARCHAR(20), `date_arrived` DATETIME, `date_adopted` DATETIME, `date_departed` DATETIME, FOREIGN KEY (`breed_code` ) REFERENCES `Breeds`(`breed_code` ), FOREIGN KEY (`size_code` ) REFERENCES `Sizes`(`size_code` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ) ); CREATE TABLE `Professionals` ( `professional_id` INTEGER PRIMARY KEY , `role_code` VARCHAR(10) NOT NULL, `first_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `last_name` VARCHAR(50), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Treatments` ( `treatment_id` INTEGER PRIMARY KEY , `dog_id` INTEGER NOT NULL, `professional_id` INTEGER NOT NULL, `treatment_type_code` VARCHAR(10) NOT NULL, `date_of_treatment` DATETIME, `cost_of_treatment` DECIMAL(19,4), FOREIGN KEY (`treatment_type_code` ) REFERENCES `Treatment_Types`(`treatment_type_code` ), FOREIGN KEY (`professional_id` ) REFERENCES `Professionals`(`professional_id` ), FOREIGN KEY (`dog_id` ) REFERENCES `Dogs`(`dog_id` ) );

CREATE TABLE Breeds (breed_code VARCHAR(10), breed_name VARCHAR(80)); CREATE TABLE Charges (charge_id INTEGER, charge_type VARCHAR(10), charge_amount DECIMAL(19,4)); CREATE TABLE Sizes (size_code VARCHAR(10), size_description VARCHAR(80)); CREATE TABLE Treatment_Types (treatment_type_code VARCHAR(10), treatment_type_description VARCHAR(80)); CREATE TABLE Owners (owner_id INTEGER, first_name VARCHAR(50), last_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Dogs (dog_id INTEGER, owner_id INTEGER, abandoned_yn VARCHAR(1), breed_code VARCHAR(10), size_code VARCHAR(10), name VARCHAR(50), age VARCHAR(20), date_of_birth DATETIME, gender VARCHAR(1), weight VARCHAR(20), date_arrived DATETIME, date_adopted DATETIME, date_departed DATETIME); CREATE TABLE Professionals (professional_id INTEGER, role_code VARCHAR(10), first_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), last_name VARCHAR(50), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Treatments (treatment_id INTEGER, dog_id INTEGER, professional_id INTEGER, treatment_type_code VARCHAR(10), date_of_treatment DATETIME, cost_of_treatment DECIMAL(19,4));

extra

dog_kennels

SELECT T1.owner_id , T1.zip_code FROM Owners AS T1 JOIN Dogs AS T2 ON T1.owner_id = T2.owner_id JOIN Treatments AS T3 ON T2.dog_id = T3.dog_id GROUP BY T1.owner_id ORDER BY sum(T3.cost_of_treatment) DESC LIMIT 1

Which owner has paid the largest amount of money in total for their dogs? Show the owner id and zip code.

CREATE TABLE `Breeds` ( `breed_code` VARCHAR(10) PRIMARY KEY , `breed_name` VARCHAR(80) ); CREATE TABLE `Charges` ( `charge_id` INTEGER PRIMARY KEY , `charge_type` VARCHAR(10), `charge_amount` DECIMAL(19,4) ); CREATE TABLE `Sizes` ( `size_code` VARCHAR(10) PRIMARY KEY , `size_description` VARCHAR(80) ); CREATE TABLE `Treatment_Types` ( `treatment_type_code` VARCHAR(10) PRIMARY KEY , `treatment_type_description` VARCHAR(80) ); CREATE TABLE `Owners` ( `owner_id` INTEGER PRIMARY KEY , `first_name` VARCHAR(50), `last_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Dogs` ( `dog_id` INTEGER PRIMARY KEY , `owner_id` INTEGER NOT NULL, `abandoned_yn` VARCHAR(1), `breed_code` VARCHAR(10) NOT NULL, `size_code` VARCHAR(10) NOT NULL, `name` VARCHAR(50), `age` VARCHAR(20), `date_of_birth` DATETIME, `gender` VARCHAR(1), `weight` VARCHAR(20), `date_arrived` DATETIME, `date_adopted` DATETIME, `date_departed` DATETIME, FOREIGN KEY (`breed_code` ) REFERENCES `Breeds`(`breed_code` ), FOREIGN KEY (`size_code` ) REFERENCES `Sizes`(`size_code` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ) ); CREATE TABLE `Professionals` ( `professional_id` INTEGER PRIMARY KEY , `role_code` VARCHAR(10) NOT NULL, `first_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `last_name` VARCHAR(50), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Treatments` ( `treatment_id` INTEGER PRIMARY KEY , `dog_id` INTEGER NOT NULL, `professional_id` INTEGER NOT NULL, `treatment_type_code` VARCHAR(10) NOT NULL, `date_of_treatment` DATETIME, `cost_of_treatment` DECIMAL(19,4), FOREIGN KEY (`treatment_type_code` ) REFERENCES `Treatment_Types`(`treatment_type_code` ), FOREIGN KEY (`professional_id` ) REFERENCES `Professionals`(`professional_id` ), FOREIGN KEY (`dog_id` ) REFERENCES `Dogs`(`dog_id` ) );

CREATE TABLE Breeds (breed_code VARCHAR(10), breed_name VARCHAR(80)); CREATE TABLE Charges (charge_id INTEGER, charge_type VARCHAR(10), charge_amount DECIMAL(19,4)); CREATE TABLE Sizes (size_code VARCHAR(10), size_description VARCHAR(80)); CREATE TABLE Treatment_Types (treatment_type_code VARCHAR(10), treatment_type_description VARCHAR(80)); CREATE TABLE Owners (owner_id INTEGER, first_name VARCHAR(50), last_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Dogs (dog_id INTEGER, owner_id INTEGER, abandoned_yn VARCHAR(1), breed_code VARCHAR(10), size_code VARCHAR(10), name VARCHAR(50), age VARCHAR(20), date_of_birth DATETIME, gender VARCHAR(1), weight VARCHAR(20), date_arrived DATETIME, date_adopted DATETIME, date_departed DATETIME); CREATE TABLE Professionals (professional_id INTEGER, role_code VARCHAR(10), first_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), last_name VARCHAR(50), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Treatments (treatment_id INTEGER, dog_id INTEGER, professional_id INTEGER, treatment_type_code VARCHAR(10), date_of_treatment DATETIME, cost_of_treatment DECIMAL(19,4));

extra

dog_kennels

SELECT T1.owner_id , T1.zip_code FROM Owners AS T1 JOIN Dogs AS T2 ON T1.owner_id = T2.owner_id JOIN Treatments AS T3 ON T2.dog_id = T3.dog_id GROUP BY T1.owner_id ORDER BY sum(T3.cost_of_treatment) DESC LIMIT 1

Find the owner id and zip code of the owner who spent the most money in total for his or her dogs.

CREATE TABLE `Breeds` ( `breed_code` VARCHAR(10) PRIMARY KEY , `breed_name` VARCHAR(80) ); CREATE TABLE `Charges` ( `charge_id` INTEGER PRIMARY KEY , `charge_type` VARCHAR(10), `charge_amount` DECIMAL(19,4) ); CREATE TABLE `Sizes` ( `size_code` VARCHAR(10) PRIMARY KEY , `size_description` VARCHAR(80) ); CREATE TABLE `Treatment_Types` ( `treatment_type_code` VARCHAR(10) PRIMARY KEY , `treatment_type_description` VARCHAR(80) ); CREATE TABLE `Owners` ( `owner_id` INTEGER PRIMARY KEY , `first_name` VARCHAR(50), `last_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Dogs` ( `dog_id` INTEGER PRIMARY KEY , `owner_id` INTEGER NOT NULL, `abandoned_yn` VARCHAR(1), `breed_code` VARCHAR(10) NOT NULL, `size_code` VARCHAR(10) NOT NULL, `name` VARCHAR(50), `age` VARCHAR(20), `date_of_birth` DATETIME, `gender` VARCHAR(1), `weight` VARCHAR(20), `date_arrived` DATETIME, `date_adopted` DATETIME, `date_departed` DATETIME, FOREIGN KEY (`breed_code` ) REFERENCES `Breeds`(`breed_code` ), FOREIGN KEY (`size_code` ) REFERENCES `Sizes`(`size_code` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ) ); CREATE TABLE `Professionals` ( `professional_id` INTEGER PRIMARY KEY , `role_code` VARCHAR(10) NOT NULL, `first_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `last_name` VARCHAR(50), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Treatments` ( `treatment_id` INTEGER PRIMARY KEY , `dog_id` INTEGER NOT NULL, `professional_id` INTEGER NOT NULL, `treatment_type_code` VARCHAR(10) NOT NULL, `date_of_treatment` DATETIME, `cost_of_treatment` DECIMAL(19,4), FOREIGN KEY (`treatment_type_code` ) REFERENCES `Treatment_Types`(`treatment_type_code` ), FOREIGN KEY (`professional_id` ) REFERENCES `Professionals`(`professional_id` ), FOREIGN KEY (`dog_id` ) REFERENCES `Dogs`(`dog_id` ) );

CREATE TABLE Breeds (breed_code VARCHAR(10), breed_name VARCHAR(80)); CREATE TABLE Charges (charge_id INTEGER, charge_type VARCHAR(10), charge_amount DECIMAL(19,4)); CREATE TABLE Sizes (size_code VARCHAR(10), size_description VARCHAR(80)); CREATE TABLE Treatment_Types (treatment_type_code VARCHAR(10), treatment_type_description VARCHAR(80)); CREATE TABLE Owners (owner_id INTEGER, first_name VARCHAR(50), last_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Dogs (dog_id INTEGER, owner_id INTEGER, abandoned_yn VARCHAR(1), breed_code VARCHAR(10), size_code VARCHAR(10), name VARCHAR(50), age VARCHAR(20), date_of_birth DATETIME, gender VARCHAR(1), weight VARCHAR(20), date_arrived DATETIME, date_adopted DATETIME, date_departed DATETIME); CREATE TABLE Professionals (professional_id INTEGER, role_code VARCHAR(10), first_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), last_name VARCHAR(50), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Treatments (treatment_id INTEGER, dog_id INTEGER, professional_id INTEGER, treatment_type_code VARCHAR(10), date_of_treatment DATETIME, cost_of_treatment DECIMAL(19,4));

extra

dog_kennels

SELECT T1.professional_id , T1.cell_number FROM Professionals AS T1 JOIN Treatments AS T2 ON T1.professional_id = T2.professional_id GROUP BY T1.professional_id HAVING count(*) >= 2

Which professionals have done at least two types of treatments? List the professional id and cell phone.

CREATE TABLE `Breeds` ( `breed_code` VARCHAR(10) PRIMARY KEY , `breed_name` VARCHAR(80) ); CREATE TABLE `Charges` ( `charge_id` INTEGER PRIMARY KEY , `charge_type` VARCHAR(10), `charge_amount` DECIMAL(19,4) ); CREATE TABLE `Sizes` ( `size_code` VARCHAR(10) PRIMARY KEY , `size_description` VARCHAR(80) ); CREATE TABLE `Treatment_Types` ( `treatment_type_code` VARCHAR(10) PRIMARY KEY , `treatment_type_description` VARCHAR(80) ); CREATE TABLE `Owners` ( `owner_id` INTEGER PRIMARY KEY , `first_name` VARCHAR(50), `last_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Dogs` ( `dog_id` INTEGER PRIMARY KEY , `owner_id` INTEGER NOT NULL, `abandoned_yn` VARCHAR(1), `breed_code` VARCHAR(10) NOT NULL, `size_code` VARCHAR(10) NOT NULL, `name` VARCHAR(50), `age` VARCHAR(20), `date_of_birth` DATETIME, `gender` VARCHAR(1), `weight` VARCHAR(20), `date_arrived` DATETIME, `date_adopted` DATETIME, `date_departed` DATETIME, FOREIGN KEY (`breed_code` ) REFERENCES `Breeds`(`breed_code` ), FOREIGN KEY (`size_code` ) REFERENCES `Sizes`(`size_code` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ) ); CREATE TABLE `Professionals` ( `professional_id` INTEGER PRIMARY KEY , `role_code` VARCHAR(10) NOT NULL, `first_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `last_name` VARCHAR(50), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Treatments` ( `treatment_id` INTEGER PRIMARY KEY , `dog_id` INTEGER NOT NULL, `professional_id` INTEGER NOT NULL, `treatment_type_code` VARCHAR(10) NOT NULL, `date_of_treatment` DATETIME, `cost_of_treatment` DECIMAL(19,4), FOREIGN KEY (`treatment_type_code` ) REFERENCES `Treatment_Types`(`treatment_type_code` ), FOREIGN KEY (`professional_id` ) REFERENCES `Professionals`(`professional_id` ), FOREIGN KEY (`dog_id` ) REFERENCES `Dogs`(`dog_id` ) );

CREATE TABLE Breeds (breed_code VARCHAR(10), breed_name VARCHAR(80)); CREATE TABLE Charges (charge_id INTEGER, charge_type VARCHAR(10), charge_amount DECIMAL(19,4)); CREATE TABLE Sizes (size_code VARCHAR(10), size_description VARCHAR(80)); CREATE TABLE Treatment_Types (treatment_type_code VARCHAR(10), treatment_type_description VARCHAR(80)); CREATE TABLE Owners (owner_id INTEGER, first_name VARCHAR(50), last_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Dogs (dog_id INTEGER, owner_id INTEGER, abandoned_yn VARCHAR(1), breed_code VARCHAR(10), size_code VARCHAR(10), name VARCHAR(50), age VARCHAR(20), date_of_birth DATETIME, gender VARCHAR(1), weight VARCHAR(20), date_arrived DATETIME, date_adopted DATETIME, date_departed DATETIME); CREATE TABLE Professionals (professional_id INTEGER, role_code VARCHAR(10), first_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), last_name VARCHAR(50), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Treatments (treatment_id INTEGER, dog_id INTEGER, professional_id INTEGER, treatment_type_code VARCHAR(10), date_of_treatment DATETIME, cost_of_treatment DECIMAL(19,4));

medium

dog_kennels

SELECT T1.professional_id , T1.cell_number FROM Professionals AS T1 JOIN Treatments AS T2 ON T1.professional_id = T2.professional_id GROUP BY T1.professional_id HAVING count(*) >= 2

Find the id and cell phone of the professionals who operate two or more types of treatments.

CREATE TABLE `Breeds` ( `breed_code` VARCHAR(10) PRIMARY KEY , `breed_name` VARCHAR(80) ); CREATE TABLE `Charges` ( `charge_id` INTEGER PRIMARY KEY , `charge_type` VARCHAR(10), `charge_amount` DECIMAL(19,4) ); CREATE TABLE `Sizes` ( `size_code` VARCHAR(10) PRIMARY KEY , `size_description` VARCHAR(80) ); CREATE TABLE `Treatment_Types` ( `treatment_type_code` VARCHAR(10) PRIMARY KEY , `treatment_type_description` VARCHAR(80) ); CREATE TABLE `Owners` ( `owner_id` INTEGER PRIMARY KEY , `first_name` VARCHAR(50), `last_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Dogs` ( `dog_id` INTEGER PRIMARY KEY , `owner_id` INTEGER NOT NULL, `abandoned_yn` VARCHAR(1), `breed_code` VARCHAR(10) NOT NULL, `size_code` VARCHAR(10) NOT NULL, `name` VARCHAR(50), `age` VARCHAR(20), `date_of_birth` DATETIME, `gender` VARCHAR(1), `weight` VARCHAR(20), `date_arrived` DATETIME, `date_adopted` DATETIME, `date_departed` DATETIME, FOREIGN KEY (`breed_code` ) REFERENCES `Breeds`(`breed_code` ), FOREIGN KEY (`size_code` ) REFERENCES `Sizes`(`size_code` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ) ); CREATE TABLE `Professionals` ( `professional_id` INTEGER PRIMARY KEY , `role_code` VARCHAR(10) NOT NULL, `first_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `last_name` VARCHAR(50), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Treatments` ( `treatment_id` INTEGER PRIMARY KEY , `dog_id` INTEGER NOT NULL, `professional_id` INTEGER NOT NULL, `treatment_type_code` VARCHAR(10) NOT NULL, `date_of_treatment` DATETIME, `cost_of_treatment` DECIMAL(19,4), FOREIGN KEY (`treatment_type_code` ) REFERENCES `Treatment_Types`(`treatment_type_code` ), FOREIGN KEY (`professional_id` ) REFERENCES `Professionals`(`professional_id` ), FOREIGN KEY (`dog_id` ) REFERENCES `Dogs`(`dog_id` ) );

CREATE TABLE Breeds (breed_code VARCHAR(10), breed_name VARCHAR(80)); CREATE TABLE Charges (charge_id INTEGER, charge_type VARCHAR(10), charge_amount DECIMAL(19,4)); CREATE TABLE Sizes (size_code VARCHAR(10), size_description VARCHAR(80)); CREATE TABLE Treatment_Types (treatment_type_code VARCHAR(10), treatment_type_description VARCHAR(80)); CREATE TABLE Owners (owner_id INTEGER, first_name VARCHAR(50), last_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Dogs (dog_id INTEGER, owner_id INTEGER, abandoned_yn VARCHAR(1), breed_code VARCHAR(10), size_code VARCHAR(10), name VARCHAR(50), age VARCHAR(20), date_of_birth DATETIME, gender VARCHAR(1), weight VARCHAR(20), date_arrived DATETIME, date_adopted DATETIME, date_departed DATETIME); CREATE TABLE Professionals (professional_id INTEGER, role_code VARCHAR(10), first_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), last_name VARCHAR(50), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Treatments (treatment_id INTEGER, dog_id INTEGER, professional_id INTEGER, treatment_type_code VARCHAR(10), date_of_treatment DATETIME, cost_of_treatment DECIMAL(19,4));

medium

dog_kennels

SELECT DISTINCT T1.first_name , T1.last_name FROM Professionals AS T1 JOIN Treatments AS T2 WHERE cost_of_treatment < ( SELECT avg(cost_of_treatment) FROM Treatments )

What are the first name and last name of the professionals who have done treatment with cost below average?

CREATE TABLE `Breeds` ( `breed_code` VARCHAR(10) PRIMARY KEY , `breed_name` VARCHAR(80) ); CREATE TABLE `Charges` ( `charge_id` INTEGER PRIMARY KEY , `charge_type` VARCHAR(10), `charge_amount` DECIMAL(19,4) ); CREATE TABLE `Sizes` ( `size_code` VARCHAR(10) PRIMARY KEY , `size_description` VARCHAR(80) ); CREATE TABLE `Treatment_Types` ( `treatment_type_code` VARCHAR(10) PRIMARY KEY , `treatment_type_description` VARCHAR(80) ); CREATE TABLE `Owners` ( `owner_id` INTEGER PRIMARY KEY , `first_name` VARCHAR(50), `last_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Dogs` ( `dog_id` INTEGER PRIMARY KEY , `owner_id` INTEGER NOT NULL, `abandoned_yn` VARCHAR(1), `breed_code` VARCHAR(10) NOT NULL, `size_code` VARCHAR(10) NOT NULL, `name` VARCHAR(50), `age` VARCHAR(20), `date_of_birth` DATETIME, `gender` VARCHAR(1), `weight` VARCHAR(20), `date_arrived` DATETIME, `date_adopted` DATETIME, `date_departed` DATETIME, FOREIGN KEY (`breed_code` ) REFERENCES `Breeds`(`breed_code` ), FOREIGN KEY (`size_code` ) REFERENCES `Sizes`(`size_code` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ) ); CREATE TABLE `Professionals` ( `professional_id` INTEGER PRIMARY KEY , `role_code` VARCHAR(10) NOT NULL, `first_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `last_name` VARCHAR(50), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Treatments` ( `treatment_id` INTEGER PRIMARY KEY , `dog_id` INTEGER NOT NULL, `professional_id` INTEGER NOT NULL, `treatment_type_code` VARCHAR(10) NOT NULL, `date_of_treatment` DATETIME, `cost_of_treatment` DECIMAL(19,4), FOREIGN KEY (`treatment_type_code` ) REFERENCES `Treatment_Types`(`treatment_type_code` ), FOREIGN KEY (`professional_id` ) REFERENCES `Professionals`(`professional_id` ), FOREIGN KEY (`dog_id` ) REFERENCES `Dogs`(`dog_id` ) );

CREATE TABLE Breeds (breed_code VARCHAR(10), breed_name VARCHAR(80)); CREATE TABLE Charges (charge_id INTEGER, charge_type VARCHAR(10), charge_amount DECIMAL(19,4)); CREATE TABLE Sizes (size_code VARCHAR(10), size_description VARCHAR(80)); CREATE TABLE Treatment_Types (treatment_type_code VARCHAR(10), treatment_type_description VARCHAR(80)); CREATE TABLE Owners (owner_id INTEGER, first_name VARCHAR(50), last_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Dogs (dog_id INTEGER, owner_id INTEGER, abandoned_yn VARCHAR(1), breed_code VARCHAR(10), size_code VARCHAR(10), name VARCHAR(50), age VARCHAR(20), date_of_birth DATETIME, gender VARCHAR(1), weight VARCHAR(20), date_arrived DATETIME, date_adopted DATETIME, date_departed DATETIME); CREATE TABLE Professionals (professional_id INTEGER, role_code VARCHAR(10), first_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), last_name VARCHAR(50), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Treatments (treatment_id INTEGER, dog_id INTEGER, professional_id INTEGER, treatment_type_code VARCHAR(10), date_of_treatment DATETIME, cost_of_treatment DECIMAL(19,4));

extra

dog_kennels

SELECT DISTINCT T1.first_name , T1.last_name FROM Professionals AS T1 JOIN Treatments AS T2 WHERE cost_of_treatment < ( SELECT avg(cost_of_treatment) FROM Treatments )

Which professionals have operated a treatment that costs less than the average? Give me theor first names and last names.

CREATE TABLE `Breeds` ( `breed_code` VARCHAR(10) PRIMARY KEY , `breed_name` VARCHAR(80) ); CREATE TABLE `Charges` ( `charge_id` INTEGER PRIMARY KEY , `charge_type` VARCHAR(10), `charge_amount` DECIMAL(19,4) ); CREATE TABLE `Sizes` ( `size_code` VARCHAR(10) PRIMARY KEY , `size_description` VARCHAR(80) ); CREATE TABLE `Treatment_Types` ( `treatment_type_code` VARCHAR(10) PRIMARY KEY , `treatment_type_description` VARCHAR(80) ); CREATE TABLE `Owners` ( `owner_id` INTEGER PRIMARY KEY , `first_name` VARCHAR(50), `last_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Dogs` ( `dog_id` INTEGER PRIMARY KEY , `owner_id` INTEGER NOT NULL, `abandoned_yn` VARCHAR(1), `breed_code` VARCHAR(10) NOT NULL, `size_code` VARCHAR(10) NOT NULL, `name` VARCHAR(50), `age` VARCHAR(20), `date_of_birth` DATETIME, `gender` VARCHAR(1), `weight` VARCHAR(20), `date_arrived` DATETIME, `date_adopted` DATETIME, `date_departed` DATETIME, FOREIGN KEY (`breed_code` ) REFERENCES `Breeds`(`breed_code` ), FOREIGN KEY (`size_code` ) REFERENCES `Sizes`(`size_code` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ) ); CREATE TABLE `Professionals` ( `professional_id` INTEGER PRIMARY KEY , `role_code` VARCHAR(10) NOT NULL, `first_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `last_name` VARCHAR(50), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Treatments` ( `treatment_id` INTEGER PRIMARY KEY , `dog_id` INTEGER NOT NULL, `professional_id` INTEGER NOT NULL, `treatment_type_code` VARCHAR(10) NOT NULL, `date_of_treatment` DATETIME, `cost_of_treatment` DECIMAL(19,4), FOREIGN KEY (`treatment_type_code` ) REFERENCES `Treatment_Types`(`treatment_type_code` ), FOREIGN KEY (`professional_id` ) REFERENCES `Professionals`(`professional_id` ), FOREIGN KEY (`dog_id` ) REFERENCES `Dogs`(`dog_id` ) );

CREATE TABLE Breeds (breed_code VARCHAR(10), breed_name VARCHAR(80)); CREATE TABLE Charges (charge_id INTEGER, charge_type VARCHAR(10), charge_amount DECIMAL(19,4)); CREATE TABLE Sizes (size_code VARCHAR(10), size_description VARCHAR(80)); CREATE TABLE Treatment_Types (treatment_type_code VARCHAR(10), treatment_type_description VARCHAR(80)); CREATE TABLE Owners (owner_id INTEGER, first_name VARCHAR(50), last_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Dogs (dog_id INTEGER, owner_id INTEGER, abandoned_yn VARCHAR(1), breed_code VARCHAR(10), size_code VARCHAR(10), name VARCHAR(50), age VARCHAR(20), date_of_birth DATETIME, gender VARCHAR(1), weight VARCHAR(20), date_arrived DATETIME, date_adopted DATETIME, date_departed DATETIME); CREATE TABLE Professionals (professional_id INTEGER, role_code VARCHAR(10), first_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), last_name VARCHAR(50), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Treatments (treatment_id INTEGER, dog_id INTEGER, professional_id INTEGER, treatment_type_code VARCHAR(10), date_of_treatment DATETIME, cost_of_treatment DECIMAL(19,4));

extra

dog_kennels

SELECT T1.date_of_treatment , T2.first_name FROM Treatments AS T1 JOIN Professionals AS T2 ON T1.professional_id = T2.professional_id

List the date of each treatment, together with the first name of the professional who operated it.

CREATE TABLE `Breeds` ( `breed_code` VARCHAR(10) PRIMARY KEY , `breed_name` VARCHAR(80) ); CREATE TABLE `Charges` ( `charge_id` INTEGER PRIMARY KEY , `charge_type` VARCHAR(10), `charge_amount` DECIMAL(19,4) ); CREATE TABLE `Sizes` ( `size_code` VARCHAR(10) PRIMARY KEY , `size_description` VARCHAR(80) ); CREATE TABLE `Treatment_Types` ( `treatment_type_code` VARCHAR(10) PRIMARY KEY , `treatment_type_description` VARCHAR(80) ); CREATE TABLE `Owners` ( `owner_id` INTEGER PRIMARY KEY , `first_name` VARCHAR(50), `last_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Dogs` ( `dog_id` INTEGER PRIMARY KEY , `owner_id` INTEGER NOT NULL, `abandoned_yn` VARCHAR(1), `breed_code` VARCHAR(10) NOT NULL, `size_code` VARCHAR(10) NOT NULL, `name` VARCHAR(50), `age` VARCHAR(20), `date_of_birth` DATETIME, `gender` VARCHAR(1), `weight` VARCHAR(20), `date_arrived` DATETIME, `date_adopted` DATETIME, `date_departed` DATETIME, FOREIGN KEY (`breed_code` ) REFERENCES `Breeds`(`breed_code` ), FOREIGN KEY (`size_code` ) REFERENCES `Sizes`(`size_code` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ) ); CREATE TABLE `Professionals` ( `professional_id` INTEGER PRIMARY KEY , `role_code` VARCHAR(10) NOT NULL, `first_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `last_name` VARCHAR(50), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Treatments` ( `treatment_id` INTEGER PRIMARY KEY , `dog_id` INTEGER NOT NULL, `professional_id` INTEGER NOT NULL, `treatment_type_code` VARCHAR(10) NOT NULL, `date_of_treatment` DATETIME, `cost_of_treatment` DECIMAL(19,4), FOREIGN KEY (`treatment_type_code` ) REFERENCES `Treatment_Types`(`treatment_type_code` ), FOREIGN KEY (`professional_id` ) REFERENCES `Professionals`(`professional_id` ), FOREIGN KEY (`dog_id` ) REFERENCES `Dogs`(`dog_id` ) );

CREATE TABLE Breeds (breed_code VARCHAR(10), breed_name VARCHAR(80)); CREATE TABLE Charges (charge_id INTEGER, charge_type VARCHAR(10), charge_amount DECIMAL(19,4)); CREATE TABLE Sizes (size_code VARCHAR(10), size_description VARCHAR(80)); CREATE TABLE Treatment_Types (treatment_type_code VARCHAR(10), treatment_type_description VARCHAR(80)); CREATE TABLE Owners (owner_id INTEGER, first_name VARCHAR(50), last_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Dogs (dog_id INTEGER, owner_id INTEGER, abandoned_yn VARCHAR(1), breed_code VARCHAR(10), size_code VARCHAR(10), name VARCHAR(50), age VARCHAR(20), date_of_birth DATETIME, gender VARCHAR(1), weight VARCHAR(20), date_arrived DATETIME, date_adopted DATETIME, date_departed DATETIME); CREATE TABLE Professionals (professional_id INTEGER, role_code VARCHAR(10), first_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), last_name VARCHAR(50), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Treatments (treatment_id INTEGER, dog_id INTEGER, professional_id INTEGER, treatment_type_code VARCHAR(10), date_of_treatment DATETIME, cost_of_treatment DECIMAL(19,4));

medium

dog_kennels

SELECT T1.date_of_treatment , T2.first_name FROM Treatments AS T1 JOIN Professionals AS T2 ON T1.professional_id = T2.professional_id

What are the date and the operating professional's first name of each treatment?

CREATE TABLE `Breeds` ( `breed_code` VARCHAR(10) PRIMARY KEY , `breed_name` VARCHAR(80) ); CREATE TABLE `Charges` ( `charge_id` INTEGER PRIMARY KEY , `charge_type` VARCHAR(10), `charge_amount` DECIMAL(19,4) ); CREATE TABLE `Sizes` ( `size_code` VARCHAR(10) PRIMARY KEY , `size_description` VARCHAR(80) ); CREATE TABLE `Treatment_Types` ( `treatment_type_code` VARCHAR(10) PRIMARY KEY , `treatment_type_description` VARCHAR(80) ); CREATE TABLE `Owners` ( `owner_id` INTEGER PRIMARY KEY , `first_name` VARCHAR(50), `last_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Dogs` ( `dog_id` INTEGER PRIMARY KEY , `owner_id` INTEGER NOT NULL, `abandoned_yn` VARCHAR(1), `breed_code` VARCHAR(10) NOT NULL, `size_code` VARCHAR(10) NOT NULL, `name` VARCHAR(50), `age` VARCHAR(20), `date_of_birth` DATETIME, `gender` VARCHAR(1), `weight` VARCHAR(20), `date_arrived` DATETIME, `date_adopted` DATETIME, `date_departed` DATETIME, FOREIGN KEY (`breed_code` ) REFERENCES `Breeds`(`breed_code` ), FOREIGN KEY (`size_code` ) REFERENCES `Sizes`(`size_code` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ) ); CREATE TABLE `Professionals` ( `professional_id` INTEGER PRIMARY KEY , `role_code` VARCHAR(10) NOT NULL, `first_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `last_name` VARCHAR(50), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Treatments` ( `treatment_id` INTEGER PRIMARY KEY , `dog_id` INTEGER NOT NULL, `professional_id` INTEGER NOT NULL, `treatment_type_code` VARCHAR(10) NOT NULL, `date_of_treatment` DATETIME, `cost_of_treatment` DECIMAL(19,4), FOREIGN KEY (`treatment_type_code` ) REFERENCES `Treatment_Types`(`treatment_type_code` ), FOREIGN KEY (`professional_id` ) REFERENCES `Professionals`(`professional_id` ), FOREIGN KEY (`dog_id` ) REFERENCES `Dogs`(`dog_id` ) );

CREATE TABLE Breeds (breed_code VARCHAR(10), breed_name VARCHAR(80)); CREATE TABLE Charges (charge_id INTEGER, charge_type VARCHAR(10), charge_amount DECIMAL(19,4)); CREATE TABLE Sizes (size_code VARCHAR(10), size_description VARCHAR(80)); CREATE TABLE Treatment_Types (treatment_type_code VARCHAR(10), treatment_type_description VARCHAR(80)); CREATE TABLE Owners (owner_id INTEGER, first_name VARCHAR(50), last_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Dogs (dog_id INTEGER, owner_id INTEGER, abandoned_yn VARCHAR(1), breed_code VARCHAR(10), size_code VARCHAR(10), name VARCHAR(50), age VARCHAR(20), date_of_birth DATETIME, gender VARCHAR(1), weight VARCHAR(20), date_arrived DATETIME, date_adopted DATETIME, date_departed DATETIME); CREATE TABLE Professionals (professional_id INTEGER, role_code VARCHAR(10), first_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), last_name VARCHAR(50), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Treatments (treatment_id INTEGER, dog_id INTEGER, professional_id INTEGER, treatment_type_code VARCHAR(10), date_of_treatment DATETIME, cost_of_treatment DECIMAL(19,4));

medium

dog_kennels

SELECT T1.cost_of_treatment , T2.treatment_type_description FROM Treatments AS T1 JOIN treatment_types AS T2 ON T1.treatment_type_code = T2.treatment_type_code

List the cost of each treatment and the corresponding treatment type description.

CREATE TABLE `Breeds` ( `breed_code` VARCHAR(10) PRIMARY KEY , `breed_name` VARCHAR(80) ); CREATE TABLE `Charges` ( `charge_id` INTEGER PRIMARY KEY , `charge_type` VARCHAR(10), `charge_amount` DECIMAL(19,4) ); CREATE TABLE `Sizes` ( `size_code` VARCHAR(10) PRIMARY KEY , `size_description` VARCHAR(80) ); CREATE TABLE `Treatment_Types` ( `treatment_type_code` VARCHAR(10) PRIMARY KEY , `treatment_type_description` VARCHAR(80) ); CREATE TABLE `Owners` ( `owner_id` INTEGER PRIMARY KEY , `first_name` VARCHAR(50), `last_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Dogs` ( `dog_id` INTEGER PRIMARY KEY , `owner_id` INTEGER NOT NULL, `abandoned_yn` VARCHAR(1), `breed_code` VARCHAR(10) NOT NULL, `size_code` VARCHAR(10) NOT NULL, `name` VARCHAR(50), `age` VARCHAR(20), `date_of_birth` DATETIME, `gender` VARCHAR(1), `weight` VARCHAR(20), `date_arrived` DATETIME, `date_adopted` DATETIME, `date_departed` DATETIME, FOREIGN KEY (`breed_code` ) REFERENCES `Breeds`(`breed_code` ), FOREIGN KEY (`size_code` ) REFERENCES `Sizes`(`size_code` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ) ); CREATE TABLE `Professionals` ( `professional_id` INTEGER PRIMARY KEY , `role_code` VARCHAR(10) NOT NULL, `first_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `last_name` VARCHAR(50), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Treatments` ( `treatment_id` INTEGER PRIMARY KEY , `dog_id` INTEGER NOT NULL, `professional_id` INTEGER NOT NULL, `treatment_type_code` VARCHAR(10) NOT NULL, `date_of_treatment` DATETIME, `cost_of_treatment` DECIMAL(19,4), FOREIGN KEY (`treatment_type_code` ) REFERENCES `Treatment_Types`(`treatment_type_code` ), FOREIGN KEY (`professional_id` ) REFERENCES `Professionals`(`professional_id` ), FOREIGN KEY (`dog_id` ) REFERENCES `Dogs`(`dog_id` ) );

CREATE TABLE Breeds (breed_code VARCHAR(10), breed_name VARCHAR(80)); CREATE TABLE Charges (charge_id INTEGER, charge_type VARCHAR(10), charge_amount DECIMAL(19,4)); CREATE TABLE Sizes (size_code VARCHAR(10), size_description VARCHAR(80)); CREATE TABLE Treatment_Types (treatment_type_code VARCHAR(10), treatment_type_description VARCHAR(80)); CREATE TABLE Owners (owner_id INTEGER, first_name VARCHAR(50), last_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Dogs (dog_id INTEGER, owner_id INTEGER, abandoned_yn VARCHAR(1), breed_code VARCHAR(10), size_code VARCHAR(10), name VARCHAR(50), age VARCHAR(20), date_of_birth DATETIME, gender VARCHAR(1), weight VARCHAR(20), date_arrived DATETIME, date_adopted DATETIME, date_departed DATETIME); CREATE TABLE Professionals (professional_id INTEGER, role_code VARCHAR(10), first_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), last_name VARCHAR(50), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Treatments (treatment_id INTEGER, dog_id INTEGER, professional_id INTEGER, treatment_type_code VARCHAR(10), date_of_treatment DATETIME, cost_of_treatment DECIMAL(19,4));

medium

dog_kennels

SELECT T1.cost_of_treatment , T2.treatment_type_description FROM Treatments AS T1 JOIN treatment_types AS T2 ON T1.treatment_type_code = T2.treatment_type_code

What are the cost and treatment type description of each treatment?

CREATE TABLE `Breeds` ( `breed_code` VARCHAR(10) PRIMARY KEY , `breed_name` VARCHAR(80) ); CREATE TABLE `Charges` ( `charge_id` INTEGER PRIMARY KEY , `charge_type` VARCHAR(10), `charge_amount` DECIMAL(19,4) ); CREATE TABLE `Sizes` ( `size_code` VARCHAR(10) PRIMARY KEY , `size_description` VARCHAR(80) ); CREATE TABLE `Treatment_Types` ( `treatment_type_code` VARCHAR(10) PRIMARY KEY , `treatment_type_description` VARCHAR(80) ); CREATE TABLE `Owners` ( `owner_id` INTEGER PRIMARY KEY , `first_name` VARCHAR(50), `last_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Dogs` ( `dog_id` INTEGER PRIMARY KEY , `owner_id` INTEGER NOT NULL, `abandoned_yn` VARCHAR(1), `breed_code` VARCHAR(10) NOT NULL, `size_code` VARCHAR(10) NOT NULL, `name` VARCHAR(50), `age` VARCHAR(20), `date_of_birth` DATETIME, `gender` VARCHAR(1), `weight` VARCHAR(20), `date_arrived` DATETIME, `date_adopted` DATETIME, `date_departed` DATETIME, FOREIGN KEY (`breed_code` ) REFERENCES `Breeds`(`breed_code` ), FOREIGN KEY (`size_code` ) REFERENCES `Sizes`(`size_code` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ) ); CREATE TABLE `Professionals` ( `professional_id` INTEGER PRIMARY KEY , `role_code` VARCHAR(10) NOT NULL, `first_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `last_name` VARCHAR(50), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Treatments` ( `treatment_id` INTEGER PRIMARY KEY , `dog_id` INTEGER NOT NULL, `professional_id` INTEGER NOT NULL, `treatment_type_code` VARCHAR(10) NOT NULL, `date_of_treatment` DATETIME, `cost_of_treatment` DECIMAL(19,4), FOREIGN KEY (`treatment_type_code` ) REFERENCES `Treatment_Types`(`treatment_type_code` ), FOREIGN KEY (`professional_id` ) REFERENCES `Professionals`(`professional_id` ), FOREIGN KEY (`dog_id` ) REFERENCES `Dogs`(`dog_id` ) );

CREATE TABLE Breeds (breed_code VARCHAR(10), breed_name VARCHAR(80)); CREATE TABLE Charges (charge_id INTEGER, charge_type VARCHAR(10), charge_amount DECIMAL(19,4)); CREATE TABLE Sizes (size_code VARCHAR(10), size_description VARCHAR(80)); CREATE TABLE Treatment_Types (treatment_type_code VARCHAR(10), treatment_type_description VARCHAR(80)); CREATE TABLE Owners (owner_id INTEGER, first_name VARCHAR(50), last_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Dogs (dog_id INTEGER, owner_id INTEGER, abandoned_yn VARCHAR(1), breed_code VARCHAR(10), size_code VARCHAR(10), name VARCHAR(50), age VARCHAR(20), date_of_birth DATETIME, gender VARCHAR(1), weight VARCHAR(20), date_arrived DATETIME, date_adopted DATETIME, date_departed DATETIME); CREATE TABLE Professionals (professional_id INTEGER, role_code VARCHAR(10), first_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), last_name VARCHAR(50), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Treatments (treatment_id INTEGER, dog_id INTEGER, professional_id INTEGER, treatment_type_code VARCHAR(10), date_of_treatment DATETIME, cost_of_treatment DECIMAL(19,4));

medium

dog_kennels

SELECT T1.first_name , T1.last_name , T2.size_code FROM Owners AS T1 JOIN Dogs AS T2 ON T1.owner_id = T2.owner_id

List each owner's first name, last name, and the size of his for her dog.

CREATE TABLE `Breeds` ( `breed_code` VARCHAR(10) PRIMARY KEY , `breed_name` VARCHAR(80) ); CREATE TABLE `Charges` ( `charge_id` INTEGER PRIMARY KEY , `charge_type` VARCHAR(10), `charge_amount` DECIMAL(19,4) ); CREATE TABLE `Sizes` ( `size_code` VARCHAR(10) PRIMARY KEY , `size_description` VARCHAR(80) ); CREATE TABLE `Treatment_Types` ( `treatment_type_code` VARCHAR(10) PRIMARY KEY , `treatment_type_description` VARCHAR(80) ); CREATE TABLE `Owners` ( `owner_id` INTEGER PRIMARY KEY , `first_name` VARCHAR(50), `last_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Dogs` ( `dog_id` INTEGER PRIMARY KEY , `owner_id` INTEGER NOT NULL, `abandoned_yn` VARCHAR(1), `breed_code` VARCHAR(10) NOT NULL, `size_code` VARCHAR(10) NOT NULL, `name` VARCHAR(50), `age` VARCHAR(20), `date_of_birth` DATETIME, `gender` VARCHAR(1), `weight` VARCHAR(20), `date_arrived` DATETIME, `date_adopted` DATETIME, `date_departed` DATETIME, FOREIGN KEY (`breed_code` ) REFERENCES `Breeds`(`breed_code` ), FOREIGN KEY (`size_code` ) REFERENCES `Sizes`(`size_code` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ) ); CREATE TABLE `Professionals` ( `professional_id` INTEGER PRIMARY KEY , `role_code` VARCHAR(10) NOT NULL, `first_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `last_name` VARCHAR(50), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Treatments` ( `treatment_id` INTEGER PRIMARY KEY , `dog_id` INTEGER NOT NULL, `professional_id` INTEGER NOT NULL, `treatment_type_code` VARCHAR(10) NOT NULL, `date_of_treatment` DATETIME, `cost_of_treatment` DECIMAL(19,4), FOREIGN KEY (`treatment_type_code` ) REFERENCES `Treatment_Types`(`treatment_type_code` ), FOREIGN KEY (`professional_id` ) REFERENCES `Professionals`(`professional_id` ), FOREIGN KEY (`dog_id` ) REFERENCES `Dogs`(`dog_id` ) );

CREATE TABLE Breeds (breed_code VARCHAR(10), breed_name VARCHAR(80)); CREATE TABLE Charges (charge_id INTEGER, charge_type VARCHAR(10), charge_amount DECIMAL(19,4)); CREATE TABLE Sizes (size_code VARCHAR(10), size_description VARCHAR(80)); CREATE TABLE Treatment_Types (treatment_type_code VARCHAR(10), treatment_type_description VARCHAR(80)); CREATE TABLE Owners (owner_id INTEGER, first_name VARCHAR(50), last_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Dogs (dog_id INTEGER, owner_id INTEGER, abandoned_yn VARCHAR(1), breed_code VARCHAR(10), size_code VARCHAR(10), name VARCHAR(50), age VARCHAR(20), date_of_birth DATETIME, gender VARCHAR(1), weight VARCHAR(20), date_arrived DATETIME, date_adopted DATETIME, date_departed DATETIME); CREATE TABLE Professionals (professional_id INTEGER, role_code VARCHAR(10), first_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), last_name VARCHAR(50), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Treatments (treatment_id INTEGER, dog_id INTEGER, professional_id INTEGER, treatment_type_code VARCHAR(10), date_of_treatment DATETIME, cost_of_treatment DECIMAL(19,4));

medium

dog_kennels

SELECT T1.first_name , T1.last_name , T2.size_code FROM Owners AS T1 JOIN Dogs AS T2 ON T1.owner_id = T2.owner_id

What are each owner's first name, last name, and the size of their dog?

CREATE TABLE `Breeds` ( `breed_code` VARCHAR(10) PRIMARY KEY , `breed_name` VARCHAR(80) ); CREATE TABLE `Charges` ( `charge_id` INTEGER PRIMARY KEY , `charge_type` VARCHAR(10), `charge_amount` DECIMAL(19,4) ); CREATE TABLE `Sizes` ( `size_code` VARCHAR(10) PRIMARY KEY , `size_description` VARCHAR(80) ); CREATE TABLE `Treatment_Types` ( `treatment_type_code` VARCHAR(10) PRIMARY KEY , `treatment_type_description` VARCHAR(80) ); CREATE TABLE `Owners` ( `owner_id` INTEGER PRIMARY KEY , `first_name` VARCHAR(50), `last_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Dogs` ( `dog_id` INTEGER PRIMARY KEY , `owner_id` INTEGER NOT NULL, `abandoned_yn` VARCHAR(1), `breed_code` VARCHAR(10) NOT NULL, `size_code` VARCHAR(10) NOT NULL, `name` VARCHAR(50), `age` VARCHAR(20), `date_of_birth` DATETIME, `gender` VARCHAR(1), `weight` VARCHAR(20), `date_arrived` DATETIME, `date_adopted` DATETIME, `date_departed` DATETIME, FOREIGN KEY (`breed_code` ) REFERENCES `Breeds`(`breed_code` ), FOREIGN KEY (`size_code` ) REFERENCES `Sizes`(`size_code` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ) ); CREATE TABLE `Professionals` ( `professional_id` INTEGER PRIMARY KEY , `role_code` VARCHAR(10) NOT NULL, `first_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `last_name` VARCHAR(50), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Treatments` ( `treatment_id` INTEGER PRIMARY KEY , `dog_id` INTEGER NOT NULL, `professional_id` INTEGER NOT NULL, `treatment_type_code` VARCHAR(10) NOT NULL, `date_of_treatment` DATETIME, `cost_of_treatment` DECIMAL(19,4), FOREIGN KEY (`treatment_type_code` ) REFERENCES `Treatment_Types`(`treatment_type_code` ), FOREIGN KEY (`professional_id` ) REFERENCES `Professionals`(`professional_id` ), FOREIGN KEY (`dog_id` ) REFERENCES `Dogs`(`dog_id` ) );

CREATE TABLE Breeds (breed_code VARCHAR(10), breed_name VARCHAR(80)); CREATE TABLE Charges (charge_id INTEGER, charge_type VARCHAR(10), charge_amount DECIMAL(19,4)); CREATE TABLE Sizes (size_code VARCHAR(10), size_description VARCHAR(80)); CREATE TABLE Treatment_Types (treatment_type_code VARCHAR(10), treatment_type_description VARCHAR(80)); CREATE TABLE Owners (owner_id INTEGER, first_name VARCHAR(50), last_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Dogs (dog_id INTEGER, owner_id INTEGER, abandoned_yn VARCHAR(1), breed_code VARCHAR(10), size_code VARCHAR(10), name VARCHAR(50), age VARCHAR(20), date_of_birth DATETIME, gender VARCHAR(1), weight VARCHAR(20), date_arrived DATETIME, date_adopted DATETIME, date_departed DATETIME); CREATE TABLE Professionals (professional_id INTEGER, role_code VARCHAR(10), first_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), last_name VARCHAR(50), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Treatments (treatment_id INTEGER, dog_id INTEGER, professional_id INTEGER, treatment_type_code VARCHAR(10), date_of_treatment DATETIME, cost_of_treatment DECIMAL(19,4));

medium

dog_kennels

SELECT T1.first_name , T2.name FROM Owners AS T1 JOIN Dogs AS T2 ON T1.owner_id = T2.owner_id

List pairs of the owner's first name and the dogs's name.

CREATE TABLE `Breeds` ( `breed_code` VARCHAR(10) PRIMARY KEY , `breed_name` VARCHAR(80) ); CREATE TABLE `Charges` ( `charge_id` INTEGER PRIMARY KEY , `charge_type` VARCHAR(10), `charge_amount` DECIMAL(19,4) ); CREATE TABLE `Sizes` ( `size_code` VARCHAR(10) PRIMARY KEY , `size_description` VARCHAR(80) ); CREATE TABLE `Treatment_Types` ( `treatment_type_code` VARCHAR(10) PRIMARY KEY , `treatment_type_description` VARCHAR(80) ); CREATE TABLE `Owners` ( `owner_id` INTEGER PRIMARY KEY , `first_name` VARCHAR(50), `last_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Dogs` ( `dog_id` INTEGER PRIMARY KEY , `owner_id` INTEGER NOT NULL, `abandoned_yn` VARCHAR(1), `breed_code` VARCHAR(10) NOT NULL, `size_code` VARCHAR(10) NOT NULL, `name` VARCHAR(50), `age` VARCHAR(20), `date_of_birth` DATETIME, `gender` VARCHAR(1), `weight` VARCHAR(20), `date_arrived` DATETIME, `date_adopted` DATETIME, `date_departed` DATETIME, FOREIGN KEY (`breed_code` ) REFERENCES `Breeds`(`breed_code` ), FOREIGN KEY (`size_code` ) REFERENCES `Sizes`(`size_code` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ) ); CREATE TABLE `Professionals` ( `professional_id` INTEGER PRIMARY KEY , `role_code` VARCHAR(10) NOT NULL, `first_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `last_name` VARCHAR(50), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Treatments` ( `treatment_id` INTEGER PRIMARY KEY , `dog_id` INTEGER NOT NULL, `professional_id` INTEGER NOT NULL, `treatment_type_code` VARCHAR(10) NOT NULL, `date_of_treatment` DATETIME, `cost_of_treatment` DECIMAL(19,4), FOREIGN KEY (`treatment_type_code` ) REFERENCES `Treatment_Types`(`treatment_type_code` ), FOREIGN KEY (`professional_id` ) REFERENCES `Professionals`(`professional_id` ), FOREIGN KEY (`dog_id` ) REFERENCES `Dogs`(`dog_id` ) );

CREATE TABLE Breeds (breed_code VARCHAR(10), breed_name VARCHAR(80)); CREATE TABLE Charges (charge_id INTEGER, charge_type VARCHAR(10), charge_amount DECIMAL(19,4)); CREATE TABLE Sizes (size_code VARCHAR(10), size_description VARCHAR(80)); CREATE TABLE Treatment_Types (treatment_type_code VARCHAR(10), treatment_type_description VARCHAR(80)); CREATE TABLE Owners (owner_id INTEGER, first_name VARCHAR(50), last_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Dogs (dog_id INTEGER, owner_id INTEGER, abandoned_yn VARCHAR(1), breed_code VARCHAR(10), size_code VARCHAR(10), name VARCHAR(50), age VARCHAR(20), date_of_birth DATETIME, gender VARCHAR(1), weight VARCHAR(20), date_arrived DATETIME, date_adopted DATETIME, date_departed DATETIME); CREATE TABLE Professionals (professional_id INTEGER, role_code VARCHAR(10), first_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), last_name VARCHAR(50), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Treatments (treatment_id INTEGER, dog_id INTEGER, professional_id INTEGER, treatment_type_code VARCHAR(10), date_of_treatment DATETIME, cost_of_treatment DECIMAL(19,4));

medium

dog_kennels

SELECT T1.first_name , T2.name FROM Owners AS T1 JOIN Dogs AS T2 ON T1.owner_id = T2.owner_id

What are each owner's first name and their dogs's name?

CREATE TABLE `Breeds` ( `breed_code` VARCHAR(10) PRIMARY KEY , `breed_name` VARCHAR(80) ); CREATE TABLE `Charges` ( `charge_id` INTEGER PRIMARY KEY , `charge_type` VARCHAR(10), `charge_amount` DECIMAL(19,4) ); CREATE TABLE `Sizes` ( `size_code` VARCHAR(10) PRIMARY KEY , `size_description` VARCHAR(80) ); CREATE TABLE `Treatment_Types` ( `treatment_type_code` VARCHAR(10) PRIMARY KEY , `treatment_type_description` VARCHAR(80) ); CREATE TABLE `Owners` ( `owner_id` INTEGER PRIMARY KEY , `first_name` VARCHAR(50), `last_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Dogs` ( `dog_id` INTEGER PRIMARY KEY , `owner_id` INTEGER NOT NULL, `abandoned_yn` VARCHAR(1), `breed_code` VARCHAR(10) NOT NULL, `size_code` VARCHAR(10) NOT NULL, `name` VARCHAR(50), `age` VARCHAR(20), `date_of_birth` DATETIME, `gender` VARCHAR(1), `weight` VARCHAR(20), `date_arrived` DATETIME, `date_adopted` DATETIME, `date_departed` DATETIME, FOREIGN KEY (`breed_code` ) REFERENCES `Breeds`(`breed_code` ), FOREIGN KEY (`size_code` ) REFERENCES `Sizes`(`size_code` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ) ); CREATE TABLE `Professionals` ( `professional_id` INTEGER PRIMARY KEY , `role_code` VARCHAR(10) NOT NULL, `first_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `last_name` VARCHAR(50), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Treatments` ( `treatment_id` INTEGER PRIMARY KEY , `dog_id` INTEGER NOT NULL, `professional_id` INTEGER NOT NULL, `treatment_type_code` VARCHAR(10) NOT NULL, `date_of_treatment` DATETIME, `cost_of_treatment` DECIMAL(19,4), FOREIGN KEY (`treatment_type_code` ) REFERENCES `Treatment_Types`(`treatment_type_code` ), FOREIGN KEY (`professional_id` ) REFERENCES `Professionals`(`professional_id` ), FOREIGN KEY (`dog_id` ) REFERENCES `Dogs`(`dog_id` ) );

CREATE TABLE Breeds (breed_code VARCHAR(10), breed_name VARCHAR(80)); CREATE TABLE Charges (charge_id INTEGER, charge_type VARCHAR(10), charge_amount DECIMAL(19,4)); CREATE TABLE Sizes (size_code VARCHAR(10), size_description VARCHAR(80)); CREATE TABLE Treatment_Types (treatment_type_code VARCHAR(10), treatment_type_description VARCHAR(80)); CREATE TABLE Owners (owner_id INTEGER, first_name VARCHAR(50), last_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Dogs (dog_id INTEGER, owner_id INTEGER, abandoned_yn VARCHAR(1), breed_code VARCHAR(10), size_code VARCHAR(10), name VARCHAR(50), age VARCHAR(20), date_of_birth DATETIME, gender VARCHAR(1), weight VARCHAR(20), date_arrived DATETIME, date_adopted DATETIME, date_departed DATETIME); CREATE TABLE Professionals (professional_id INTEGER, role_code VARCHAR(10), first_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), last_name VARCHAR(50), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Treatments (treatment_id INTEGER, dog_id INTEGER, professional_id INTEGER, treatment_type_code VARCHAR(10), date_of_treatment DATETIME, cost_of_treatment DECIMAL(19,4));

medium

dog_kennels

SELECT T1.name , T2.date_of_treatment FROM Dogs AS T1 JOIN Treatments AS T2 ON T1.dog_id = T2.dog_id WHERE T1.breed_code = ( SELECT breed_code FROM Dogs GROUP BY breed_code ORDER BY count(*) ASC LIMIT 1 )

List the names of the dogs of the rarest breed and the treatment dates of them.

CREATE TABLE `Breeds` ( `breed_code` VARCHAR(10) PRIMARY KEY , `breed_name` VARCHAR(80) ); CREATE TABLE `Charges` ( `charge_id` INTEGER PRIMARY KEY , `charge_type` VARCHAR(10), `charge_amount` DECIMAL(19,4) ); CREATE TABLE `Sizes` ( `size_code` VARCHAR(10) PRIMARY KEY , `size_description` VARCHAR(80) ); CREATE TABLE `Treatment_Types` ( `treatment_type_code` VARCHAR(10) PRIMARY KEY , `treatment_type_description` VARCHAR(80) ); CREATE TABLE `Owners` ( `owner_id` INTEGER PRIMARY KEY , `first_name` VARCHAR(50), `last_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Dogs` ( `dog_id` INTEGER PRIMARY KEY , `owner_id` INTEGER NOT NULL, `abandoned_yn` VARCHAR(1), `breed_code` VARCHAR(10) NOT NULL, `size_code` VARCHAR(10) NOT NULL, `name` VARCHAR(50), `age` VARCHAR(20), `date_of_birth` DATETIME, `gender` VARCHAR(1), `weight` VARCHAR(20), `date_arrived` DATETIME, `date_adopted` DATETIME, `date_departed` DATETIME, FOREIGN KEY (`breed_code` ) REFERENCES `Breeds`(`breed_code` ), FOREIGN KEY (`size_code` ) REFERENCES `Sizes`(`size_code` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ) ); CREATE TABLE `Professionals` ( `professional_id` INTEGER PRIMARY KEY , `role_code` VARCHAR(10) NOT NULL, `first_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `last_name` VARCHAR(50), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Treatments` ( `treatment_id` INTEGER PRIMARY KEY , `dog_id` INTEGER NOT NULL, `professional_id` INTEGER NOT NULL, `treatment_type_code` VARCHAR(10) NOT NULL, `date_of_treatment` DATETIME, `cost_of_treatment` DECIMAL(19,4), FOREIGN KEY (`treatment_type_code` ) REFERENCES `Treatment_Types`(`treatment_type_code` ), FOREIGN KEY (`professional_id` ) REFERENCES `Professionals`(`professional_id` ), FOREIGN KEY (`dog_id` ) REFERENCES `Dogs`(`dog_id` ) );

CREATE TABLE Breeds (breed_code VARCHAR(10), breed_name VARCHAR(80)); CREATE TABLE Charges (charge_id INTEGER, charge_type VARCHAR(10), charge_amount DECIMAL(19,4)); CREATE TABLE Sizes (size_code VARCHAR(10), size_description VARCHAR(80)); CREATE TABLE Treatment_Types (treatment_type_code VARCHAR(10), treatment_type_description VARCHAR(80)); CREATE TABLE Owners (owner_id INTEGER, first_name VARCHAR(50), last_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Dogs (dog_id INTEGER, owner_id INTEGER, abandoned_yn VARCHAR(1), breed_code VARCHAR(10), size_code VARCHAR(10), name VARCHAR(50), age VARCHAR(20), date_of_birth DATETIME, gender VARCHAR(1), weight VARCHAR(20), date_arrived DATETIME, date_adopted DATETIME, date_departed DATETIME); CREATE TABLE Professionals (professional_id INTEGER, role_code VARCHAR(10), first_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), last_name VARCHAR(50), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Treatments (treatment_id INTEGER, dog_id INTEGER, professional_id INTEGER, treatment_type_code VARCHAR(10), date_of_treatment DATETIME, cost_of_treatment DECIMAL(19,4));

extra

dog_kennels

SELECT T1.name , T2.date_of_treatment FROM Dogs AS T1 JOIN Treatments AS T2 ON T1.dog_id = T2.dog_id WHERE T1.breed_code = ( SELECT breed_code FROM Dogs GROUP BY breed_code ORDER BY count(*) ASC LIMIT 1 )

Which dogs are of the rarest breed? Show their names and treatment dates.

CREATE TABLE `Breeds` ( `breed_code` VARCHAR(10) PRIMARY KEY , `breed_name` VARCHAR(80) ); CREATE TABLE `Charges` ( `charge_id` INTEGER PRIMARY KEY , `charge_type` VARCHAR(10), `charge_amount` DECIMAL(19,4) ); CREATE TABLE `Sizes` ( `size_code` VARCHAR(10) PRIMARY KEY , `size_description` VARCHAR(80) ); CREATE TABLE `Treatment_Types` ( `treatment_type_code` VARCHAR(10) PRIMARY KEY , `treatment_type_description` VARCHAR(80) ); CREATE TABLE `Owners` ( `owner_id` INTEGER PRIMARY KEY , `first_name` VARCHAR(50), `last_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Dogs` ( `dog_id` INTEGER PRIMARY KEY , `owner_id` INTEGER NOT NULL, `abandoned_yn` VARCHAR(1), `breed_code` VARCHAR(10) NOT NULL, `size_code` VARCHAR(10) NOT NULL, `name` VARCHAR(50), `age` VARCHAR(20), `date_of_birth` DATETIME, `gender` VARCHAR(1), `weight` VARCHAR(20), `date_arrived` DATETIME, `date_adopted` DATETIME, `date_departed` DATETIME, FOREIGN KEY (`breed_code` ) REFERENCES `Breeds`(`breed_code` ), FOREIGN KEY (`size_code` ) REFERENCES `Sizes`(`size_code` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ) ); CREATE TABLE `Professionals` ( `professional_id` INTEGER PRIMARY KEY , `role_code` VARCHAR(10) NOT NULL, `first_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `last_name` VARCHAR(50), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Treatments` ( `treatment_id` INTEGER PRIMARY KEY , `dog_id` INTEGER NOT NULL, `professional_id` INTEGER NOT NULL, `treatment_type_code` VARCHAR(10) NOT NULL, `date_of_treatment` DATETIME, `cost_of_treatment` DECIMAL(19,4), FOREIGN KEY (`treatment_type_code` ) REFERENCES `Treatment_Types`(`treatment_type_code` ), FOREIGN KEY (`professional_id` ) REFERENCES `Professionals`(`professional_id` ), FOREIGN KEY (`dog_id` ) REFERENCES `Dogs`(`dog_id` ) );

CREATE TABLE Breeds (breed_code VARCHAR(10), breed_name VARCHAR(80)); CREATE TABLE Charges (charge_id INTEGER, charge_type VARCHAR(10), charge_amount DECIMAL(19,4)); CREATE TABLE Sizes (size_code VARCHAR(10), size_description VARCHAR(80)); CREATE TABLE Treatment_Types (treatment_type_code VARCHAR(10), treatment_type_description VARCHAR(80)); CREATE TABLE Owners (owner_id INTEGER, first_name VARCHAR(50), last_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Dogs (dog_id INTEGER, owner_id INTEGER, abandoned_yn VARCHAR(1), breed_code VARCHAR(10), size_code VARCHAR(10), name VARCHAR(50), age VARCHAR(20), date_of_birth DATETIME, gender VARCHAR(1), weight VARCHAR(20), date_arrived DATETIME, date_adopted DATETIME, date_departed DATETIME); CREATE TABLE Professionals (professional_id INTEGER, role_code VARCHAR(10), first_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), last_name VARCHAR(50), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Treatments (treatment_id INTEGER, dog_id INTEGER, professional_id INTEGER, treatment_type_code VARCHAR(10), date_of_treatment DATETIME, cost_of_treatment DECIMAL(19,4));

extra

dog_kennels

SELECT T1.first_name , T2.name FROM Owners AS T1 JOIN Dogs AS T2 ON T1.owner_id = T2.owner_id WHERE T1.state = 'Virginia'

Which dogs are owned by someone who lives in Virginia? List the owner's first name and the dog's name.

CREATE TABLE `Breeds` ( `breed_code` VARCHAR(10) PRIMARY KEY , `breed_name` VARCHAR(80) ); CREATE TABLE `Charges` ( `charge_id` INTEGER PRIMARY KEY , `charge_type` VARCHAR(10), `charge_amount` DECIMAL(19,4) ); CREATE TABLE `Sizes` ( `size_code` VARCHAR(10) PRIMARY KEY , `size_description` VARCHAR(80) ); CREATE TABLE `Treatment_Types` ( `treatment_type_code` VARCHAR(10) PRIMARY KEY , `treatment_type_description` VARCHAR(80) ); CREATE TABLE `Owners` ( `owner_id` INTEGER PRIMARY KEY , `first_name` VARCHAR(50), `last_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Dogs` ( `dog_id` INTEGER PRIMARY KEY , `owner_id` INTEGER NOT NULL, `abandoned_yn` VARCHAR(1), `breed_code` VARCHAR(10) NOT NULL, `size_code` VARCHAR(10) NOT NULL, `name` VARCHAR(50), `age` VARCHAR(20), `date_of_birth` DATETIME, `gender` VARCHAR(1), `weight` VARCHAR(20), `date_arrived` DATETIME, `date_adopted` DATETIME, `date_departed` DATETIME, FOREIGN KEY (`breed_code` ) REFERENCES `Breeds`(`breed_code` ), FOREIGN KEY (`size_code` ) REFERENCES `Sizes`(`size_code` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ) ); CREATE TABLE `Professionals` ( `professional_id` INTEGER PRIMARY KEY , `role_code` VARCHAR(10) NOT NULL, `first_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `last_name` VARCHAR(50), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Treatments` ( `treatment_id` INTEGER PRIMARY KEY , `dog_id` INTEGER NOT NULL, `professional_id` INTEGER NOT NULL, `treatment_type_code` VARCHAR(10) NOT NULL, `date_of_treatment` DATETIME, `cost_of_treatment` DECIMAL(19,4), FOREIGN KEY (`treatment_type_code` ) REFERENCES `Treatment_Types`(`treatment_type_code` ), FOREIGN KEY (`professional_id` ) REFERENCES `Professionals`(`professional_id` ), FOREIGN KEY (`dog_id` ) REFERENCES `Dogs`(`dog_id` ) );

CREATE TABLE Breeds (breed_code VARCHAR(10), breed_name VARCHAR(80)); CREATE TABLE Charges (charge_id INTEGER, charge_type VARCHAR(10), charge_amount DECIMAL(19,4)); CREATE TABLE Sizes (size_code VARCHAR(10), size_description VARCHAR(80)); CREATE TABLE Treatment_Types (treatment_type_code VARCHAR(10), treatment_type_description VARCHAR(80)); CREATE TABLE Owners (owner_id INTEGER, first_name VARCHAR(50), last_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Dogs (dog_id INTEGER, owner_id INTEGER, abandoned_yn VARCHAR(1), breed_code VARCHAR(10), size_code VARCHAR(10), name VARCHAR(50), age VARCHAR(20), date_of_birth DATETIME, gender VARCHAR(1), weight VARCHAR(20), date_arrived DATETIME, date_adopted DATETIME, date_departed DATETIME); CREATE TABLE Professionals (professional_id INTEGER, role_code VARCHAR(10), first_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), last_name VARCHAR(50), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Treatments (treatment_id INTEGER, dog_id INTEGER, professional_id INTEGER, treatment_type_code VARCHAR(10), date_of_treatment DATETIME, cost_of_treatment DECIMAL(19,4));

medium

dog_kennels

SELECT T1.first_name , T2.name FROM Owners AS T1 JOIN Dogs AS T2 ON T1.owner_id = T2.owner_id WHERE T1.state = 'Virginia'

Find the first names of owners living in Virginia and the names of dogs they own.

CREATE TABLE `Breeds` ( `breed_code` VARCHAR(10) PRIMARY KEY , `breed_name` VARCHAR(80) ); CREATE TABLE `Charges` ( `charge_id` INTEGER PRIMARY KEY , `charge_type` VARCHAR(10), `charge_amount` DECIMAL(19,4) ); CREATE TABLE `Sizes` ( `size_code` VARCHAR(10) PRIMARY KEY , `size_description` VARCHAR(80) ); CREATE TABLE `Treatment_Types` ( `treatment_type_code` VARCHAR(10) PRIMARY KEY , `treatment_type_description` VARCHAR(80) ); CREATE TABLE `Owners` ( `owner_id` INTEGER PRIMARY KEY , `first_name` VARCHAR(50), `last_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Dogs` ( `dog_id` INTEGER PRIMARY KEY , `owner_id` INTEGER NOT NULL, `abandoned_yn` VARCHAR(1), `breed_code` VARCHAR(10) NOT NULL, `size_code` VARCHAR(10) NOT NULL, `name` VARCHAR(50), `age` VARCHAR(20), `date_of_birth` DATETIME, `gender` VARCHAR(1), `weight` VARCHAR(20), `date_arrived` DATETIME, `date_adopted` DATETIME, `date_departed` DATETIME, FOREIGN KEY (`breed_code` ) REFERENCES `Breeds`(`breed_code` ), FOREIGN KEY (`size_code` ) REFERENCES `Sizes`(`size_code` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ) ); CREATE TABLE `Professionals` ( `professional_id` INTEGER PRIMARY KEY , `role_code` VARCHAR(10) NOT NULL, `first_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `last_name` VARCHAR(50), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Treatments` ( `treatment_id` INTEGER PRIMARY KEY , `dog_id` INTEGER NOT NULL, `professional_id` INTEGER NOT NULL, `treatment_type_code` VARCHAR(10) NOT NULL, `date_of_treatment` DATETIME, `cost_of_treatment` DECIMAL(19,4), FOREIGN KEY (`treatment_type_code` ) REFERENCES `Treatment_Types`(`treatment_type_code` ), FOREIGN KEY (`professional_id` ) REFERENCES `Professionals`(`professional_id` ), FOREIGN KEY (`dog_id` ) REFERENCES `Dogs`(`dog_id` ) );

CREATE TABLE Breeds (breed_code VARCHAR(10), breed_name VARCHAR(80)); CREATE TABLE Charges (charge_id INTEGER, charge_type VARCHAR(10), charge_amount DECIMAL(19,4)); CREATE TABLE Sizes (size_code VARCHAR(10), size_description VARCHAR(80)); CREATE TABLE Treatment_Types (treatment_type_code VARCHAR(10), treatment_type_description VARCHAR(80)); CREATE TABLE Owners (owner_id INTEGER, first_name VARCHAR(50), last_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Dogs (dog_id INTEGER, owner_id INTEGER, abandoned_yn VARCHAR(1), breed_code VARCHAR(10), size_code VARCHAR(10), name VARCHAR(50), age VARCHAR(20), date_of_birth DATETIME, gender VARCHAR(1), weight VARCHAR(20), date_arrived DATETIME, date_adopted DATETIME, date_departed DATETIME); CREATE TABLE Professionals (professional_id INTEGER, role_code VARCHAR(10), first_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), last_name VARCHAR(50), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Treatments (treatment_id INTEGER, dog_id INTEGER, professional_id INTEGER, treatment_type_code VARCHAR(10), date_of_treatment DATETIME, cost_of_treatment DECIMAL(19,4));

medium

dog_kennels

SELECT DISTINCT T1.date_arrived , T1.date_departed FROM Dogs AS T1 JOIN Treatments AS T2 ON T1.dog_id = T2.dog_id

What are the arriving date and the departing date of the dogs who have gone through a treatment?

CREATE TABLE `Breeds` ( `breed_code` VARCHAR(10) PRIMARY KEY , `breed_name` VARCHAR(80) ); CREATE TABLE `Charges` ( `charge_id` INTEGER PRIMARY KEY , `charge_type` VARCHAR(10), `charge_amount` DECIMAL(19,4) ); CREATE TABLE `Sizes` ( `size_code` VARCHAR(10) PRIMARY KEY , `size_description` VARCHAR(80) ); CREATE TABLE `Treatment_Types` ( `treatment_type_code` VARCHAR(10) PRIMARY KEY , `treatment_type_description` VARCHAR(80) ); CREATE TABLE `Owners` ( `owner_id` INTEGER PRIMARY KEY , `first_name` VARCHAR(50), `last_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Dogs` ( `dog_id` INTEGER PRIMARY KEY , `owner_id` INTEGER NOT NULL, `abandoned_yn` VARCHAR(1), `breed_code` VARCHAR(10) NOT NULL, `size_code` VARCHAR(10) NOT NULL, `name` VARCHAR(50), `age` VARCHAR(20), `date_of_birth` DATETIME, `gender` VARCHAR(1), `weight` VARCHAR(20), `date_arrived` DATETIME, `date_adopted` DATETIME, `date_departed` DATETIME, FOREIGN KEY (`breed_code` ) REFERENCES `Breeds`(`breed_code` ), FOREIGN KEY (`size_code` ) REFERENCES `Sizes`(`size_code` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ) ); CREATE TABLE `Professionals` ( `professional_id` INTEGER PRIMARY KEY , `role_code` VARCHAR(10) NOT NULL, `first_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `last_name` VARCHAR(50), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Treatments` ( `treatment_id` INTEGER PRIMARY KEY , `dog_id` INTEGER NOT NULL, `professional_id` INTEGER NOT NULL, `treatment_type_code` VARCHAR(10) NOT NULL, `date_of_treatment` DATETIME, `cost_of_treatment` DECIMAL(19,4), FOREIGN KEY (`treatment_type_code` ) REFERENCES `Treatment_Types`(`treatment_type_code` ), FOREIGN KEY (`professional_id` ) REFERENCES `Professionals`(`professional_id` ), FOREIGN KEY (`dog_id` ) REFERENCES `Dogs`(`dog_id` ) );

CREATE TABLE Breeds (breed_code VARCHAR(10), breed_name VARCHAR(80)); CREATE TABLE Charges (charge_id INTEGER, charge_type VARCHAR(10), charge_amount DECIMAL(19,4)); CREATE TABLE Sizes (size_code VARCHAR(10), size_description VARCHAR(80)); CREATE TABLE Treatment_Types (treatment_type_code VARCHAR(10), treatment_type_description VARCHAR(80)); CREATE TABLE Owners (owner_id INTEGER, first_name VARCHAR(50), last_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Dogs (dog_id INTEGER, owner_id INTEGER, abandoned_yn VARCHAR(1), breed_code VARCHAR(10), size_code VARCHAR(10), name VARCHAR(50), age VARCHAR(20), date_of_birth DATETIME, gender VARCHAR(1), weight VARCHAR(20), date_arrived DATETIME, date_adopted DATETIME, date_departed DATETIME); CREATE TABLE Professionals (professional_id INTEGER, role_code VARCHAR(10), first_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), last_name VARCHAR(50), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Treatments (treatment_id INTEGER, dog_id INTEGER, professional_id INTEGER, treatment_type_code VARCHAR(10), date_of_treatment DATETIME, cost_of_treatment DECIMAL(19,4));

medium

dog_kennels

SELECT DISTINCT T1.date_arrived , T1.date_departed FROM Dogs AS T1 JOIN Treatments AS T2 ON T1.dog_id = T2.dog_id

Find the arriving date and the departing date of the dogs that received a treatment.

CREATE TABLE `Breeds` ( `breed_code` VARCHAR(10) PRIMARY KEY , `breed_name` VARCHAR(80) ); CREATE TABLE `Charges` ( `charge_id` INTEGER PRIMARY KEY , `charge_type` VARCHAR(10), `charge_amount` DECIMAL(19,4) ); CREATE TABLE `Sizes` ( `size_code` VARCHAR(10) PRIMARY KEY , `size_description` VARCHAR(80) ); CREATE TABLE `Treatment_Types` ( `treatment_type_code` VARCHAR(10) PRIMARY KEY , `treatment_type_description` VARCHAR(80) ); CREATE TABLE `Owners` ( `owner_id` INTEGER PRIMARY KEY , `first_name` VARCHAR(50), `last_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Dogs` ( `dog_id` INTEGER PRIMARY KEY , `owner_id` INTEGER NOT NULL, `abandoned_yn` VARCHAR(1), `breed_code` VARCHAR(10) NOT NULL, `size_code` VARCHAR(10) NOT NULL, `name` VARCHAR(50), `age` VARCHAR(20), `date_of_birth` DATETIME, `gender` VARCHAR(1), `weight` VARCHAR(20), `date_arrived` DATETIME, `date_adopted` DATETIME, `date_departed` DATETIME, FOREIGN KEY (`breed_code` ) REFERENCES `Breeds`(`breed_code` ), FOREIGN KEY (`size_code` ) REFERENCES `Sizes`(`size_code` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ) ); CREATE TABLE `Professionals` ( `professional_id` INTEGER PRIMARY KEY , `role_code` VARCHAR(10) NOT NULL, `first_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `last_name` VARCHAR(50), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Treatments` ( `treatment_id` INTEGER PRIMARY KEY , `dog_id` INTEGER NOT NULL, `professional_id` INTEGER NOT NULL, `treatment_type_code` VARCHAR(10) NOT NULL, `date_of_treatment` DATETIME, `cost_of_treatment` DECIMAL(19,4), FOREIGN KEY (`treatment_type_code` ) REFERENCES `Treatment_Types`(`treatment_type_code` ), FOREIGN KEY (`professional_id` ) REFERENCES `Professionals`(`professional_id` ), FOREIGN KEY (`dog_id` ) REFERENCES `Dogs`(`dog_id` ) );

CREATE TABLE Breeds (breed_code VARCHAR(10), breed_name VARCHAR(80)); CREATE TABLE Charges (charge_id INTEGER, charge_type VARCHAR(10), charge_amount DECIMAL(19,4)); CREATE TABLE Sizes (size_code VARCHAR(10), size_description VARCHAR(80)); CREATE TABLE Treatment_Types (treatment_type_code VARCHAR(10), treatment_type_description VARCHAR(80)); CREATE TABLE Owners (owner_id INTEGER, first_name VARCHAR(50), last_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Dogs (dog_id INTEGER, owner_id INTEGER, abandoned_yn VARCHAR(1), breed_code VARCHAR(10), size_code VARCHAR(10), name VARCHAR(50), age VARCHAR(20), date_of_birth DATETIME, gender VARCHAR(1), weight VARCHAR(20), date_arrived DATETIME, date_adopted DATETIME, date_departed DATETIME); CREATE TABLE Professionals (professional_id INTEGER, role_code VARCHAR(10), first_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), last_name VARCHAR(50), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Treatments (treatment_id INTEGER, dog_id INTEGER, professional_id INTEGER, treatment_type_code VARCHAR(10), date_of_treatment DATETIME, cost_of_treatment DECIMAL(19,4));

medium

dog_kennels

SELECT T1.last_name FROM Owners AS T1 JOIN Dogs AS T2 ON T1.owner_id = T2.owner_id WHERE T2.age = ( SELECT max(age) FROM Dogs )

List the last name of the owner owning the youngest dog.

CREATE TABLE `Breeds` ( `breed_code` VARCHAR(10) PRIMARY KEY , `breed_name` VARCHAR(80) ); CREATE TABLE `Charges` ( `charge_id` INTEGER PRIMARY KEY , `charge_type` VARCHAR(10), `charge_amount` DECIMAL(19,4) ); CREATE TABLE `Sizes` ( `size_code` VARCHAR(10) PRIMARY KEY , `size_description` VARCHAR(80) ); CREATE TABLE `Treatment_Types` ( `treatment_type_code` VARCHAR(10) PRIMARY KEY , `treatment_type_description` VARCHAR(80) ); CREATE TABLE `Owners` ( `owner_id` INTEGER PRIMARY KEY , `first_name` VARCHAR(50), `last_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Dogs` ( `dog_id` INTEGER PRIMARY KEY , `owner_id` INTEGER NOT NULL, `abandoned_yn` VARCHAR(1), `breed_code` VARCHAR(10) NOT NULL, `size_code` VARCHAR(10) NOT NULL, `name` VARCHAR(50), `age` VARCHAR(20), `date_of_birth` DATETIME, `gender` VARCHAR(1), `weight` VARCHAR(20), `date_arrived` DATETIME, `date_adopted` DATETIME, `date_departed` DATETIME, FOREIGN KEY (`breed_code` ) REFERENCES `Breeds`(`breed_code` ), FOREIGN KEY (`size_code` ) REFERENCES `Sizes`(`size_code` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ) ); CREATE TABLE `Professionals` ( `professional_id` INTEGER PRIMARY KEY , `role_code` VARCHAR(10) NOT NULL, `first_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `last_name` VARCHAR(50), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Treatments` ( `treatment_id` INTEGER PRIMARY KEY , `dog_id` INTEGER NOT NULL, `professional_id` INTEGER NOT NULL, `treatment_type_code` VARCHAR(10) NOT NULL, `date_of_treatment` DATETIME, `cost_of_treatment` DECIMAL(19,4), FOREIGN KEY (`treatment_type_code` ) REFERENCES `Treatment_Types`(`treatment_type_code` ), FOREIGN KEY (`professional_id` ) REFERENCES `Professionals`(`professional_id` ), FOREIGN KEY (`dog_id` ) REFERENCES `Dogs`(`dog_id` ) );

CREATE TABLE Breeds (breed_code VARCHAR(10), breed_name VARCHAR(80)); CREATE TABLE Charges (charge_id INTEGER, charge_type VARCHAR(10), charge_amount DECIMAL(19,4)); CREATE TABLE Sizes (size_code VARCHAR(10), size_description VARCHAR(80)); CREATE TABLE Treatment_Types (treatment_type_code VARCHAR(10), treatment_type_description VARCHAR(80)); CREATE TABLE Owners (owner_id INTEGER, first_name VARCHAR(50), last_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Dogs (dog_id INTEGER, owner_id INTEGER, abandoned_yn VARCHAR(1), breed_code VARCHAR(10), size_code VARCHAR(10), name VARCHAR(50), age VARCHAR(20), date_of_birth DATETIME, gender VARCHAR(1), weight VARCHAR(20), date_arrived DATETIME, date_adopted DATETIME, date_departed DATETIME); CREATE TABLE Professionals (professional_id INTEGER, role_code VARCHAR(10), first_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), last_name VARCHAR(50), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Treatments (treatment_id INTEGER, dog_id INTEGER, professional_id INTEGER, treatment_type_code VARCHAR(10), date_of_treatment DATETIME, cost_of_treatment DECIMAL(19,4));

extra

dog_kennels

SELECT T1.last_name FROM Owners AS T1 JOIN Dogs AS T2 ON T1.owner_id = T2.owner_id WHERE T2.age = ( SELECT max(age) FROM Dogs )

Who owns the youngest dog? Give me his or her last name.

CREATE TABLE `Breeds` ( `breed_code` VARCHAR(10) PRIMARY KEY , `breed_name` VARCHAR(80) ); CREATE TABLE `Charges` ( `charge_id` INTEGER PRIMARY KEY , `charge_type` VARCHAR(10), `charge_amount` DECIMAL(19,4) ); CREATE TABLE `Sizes` ( `size_code` VARCHAR(10) PRIMARY KEY , `size_description` VARCHAR(80) ); CREATE TABLE `Treatment_Types` ( `treatment_type_code` VARCHAR(10) PRIMARY KEY , `treatment_type_description` VARCHAR(80) ); CREATE TABLE `Owners` ( `owner_id` INTEGER PRIMARY KEY , `first_name` VARCHAR(50), `last_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Dogs` ( `dog_id` INTEGER PRIMARY KEY , `owner_id` INTEGER NOT NULL, `abandoned_yn` VARCHAR(1), `breed_code` VARCHAR(10) NOT NULL, `size_code` VARCHAR(10) NOT NULL, `name` VARCHAR(50), `age` VARCHAR(20), `date_of_birth` DATETIME, `gender` VARCHAR(1), `weight` VARCHAR(20), `date_arrived` DATETIME, `date_adopted` DATETIME, `date_departed` DATETIME, FOREIGN KEY (`breed_code` ) REFERENCES `Breeds`(`breed_code` ), FOREIGN KEY (`size_code` ) REFERENCES `Sizes`(`size_code` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ) ); CREATE TABLE `Professionals` ( `professional_id` INTEGER PRIMARY KEY , `role_code` VARCHAR(10) NOT NULL, `first_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `last_name` VARCHAR(50), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Treatments` ( `treatment_id` INTEGER PRIMARY KEY , `dog_id` INTEGER NOT NULL, `professional_id` INTEGER NOT NULL, `treatment_type_code` VARCHAR(10) NOT NULL, `date_of_treatment` DATETIME, `cost_of_treatment` DECIMAL(19,4), FOREIGN KEY (`treatment_type_code` ) REFERENCES `Treatment_Types`(`treatment_type_code` ), FOREIGN KEY (`professional_id` ) REFERENCES `Professionals`(`professional_id` ), FOREIGN KEY (`dog_id` ) REFERENCES `Dogs`(`dog_id` ) );

CREATE TABLE Breeds (breed_code VARCHAR(10), breed_name VARCHAR(80)); CREATE TABLE Charges (charge_id INTEGER, charge_type VARCHAR(10), charge_amount DECIMAL(19,4)); CREATE TABLE Sizes (size_code VARCHAR(10), size_description VARCHAR(80)); CREATE TABLE Treatment_Types (treatment_type_code VARCHAR(10), treatment_type_description VARCHAR(80)); CREATE TABLE Owners (owner_id INTEGER, first_name VARCHAR(50), last_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Dogs (dog_id INTEGER, owner_id INTEGER, abandoned_yn VARCHAR(1), breed_code VARCHAR(10), size_code VARCHAR(10), name VARCHAR(50), age VARCHAR(20), date_of_birth DATETIME, gender VARCHAR(1), weight VARCHAR(20), date_arrived DATETIME, date_adopted DATETIME, date_departed DATETIME); CREATE TABLE Professionals (professional_id INTEGER, role_code VARCHAR(10), first_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), last_name VARCHAR(50), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Treatments (treatment_id INTEGER, dog_id INTEGER, professional_id INTEGER, treatment_type_code VARCHAR(10), date_of_treatment DATETIME, cost_of_treatment DECIMAL(19,4));

extra

dog_kennels

SELECT email_address FROM Professionals WHERE state = 'Hawaii' OR state = 'Wisconsin'

List the emails of the professionals who live in the state of Hawaii or the state of Wisconsin.

CREATE TABLE `Breeds` ( `breed_code` VARCHAR(10) PRIMARY KEY , `breed_name` VARCHAR(80) ); CREATE TABLE `Charges` ( `charge_id` INTEGER PRIMARY KEY , `charge_type` VARCHAR(10), `charge_amount` DECIMAL(19,4) ); CREATE TABLE `Sizes` ( `size_code` VARCHAR(10) PRIMARY KEY , `size_description` VARCHAR(80) ); CREATE TABLE `Treatment_Types` ( `treatment_type_code` VARCHAR(10) PRIMARY KEY , `treatment_type_description` VARCHAR(80) ); CREATE TABLE `Owners` ( `owner_id` INTEGER PRIMARY KEY , `first_name` VARCHAR(50), `last_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Dogs` ( `dog_id` INTEGER PRIMARY KEY , `owner_id` INTEGER NOT NULL, `abandoned_yn` VARCHAR(1), `breed_code` VARCHAR(10) NOT NULL, `size_code` VARCHAR(10) NOT NULL, `name` VARCHAR(50), `age` VARCHAR(20), `date_of_birth` DATETIME, `gender` VARCHAR(1), `weight` VARCHAR(20), `date_arrived` DATETIME, `date_adopted` DATETIME, `date_departed` DATETIME, FOREIGN KEY (`breed_code` ) REFERENCES `Breeds`(`breed_code` ), FOREIGN KEY (`size_code` ) REFERENCES `Sizes`(`size_code` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ) ); CREATE TABLE `Professionals` ( `professional_id` INTEGER PRIMARY KEY , `role_code` VARCHAR(10) NOT NULL, `first_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `last_name` VARCHAR(50), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Treatments` ( `treatment_id` INTEGER PRIMARY KEY , `dog_id` INTEGER NOT NULL, `professional_id` INTEGER NOT NULL, `treatment_type_code` VARCHAR(10) NOT NULL, `date_of_treatment` DATETIME, `cost_of_treatment` DECIMAL(19,4), FOREIGN KEY (`treatment_type_code` ) REFERENCES `Treatment_Types`(`treatment_type_code` ), FOREIGN KEY (`professional_id` ) REFERENCES `Professionals`(`professional_id` ), FOREIGN KEY (`dog_id` ) REFERENCES `Dogs`(`dog_id` ) );

CREATE TABLE Breeds (breed_code VARCHAR(10), breed_name VARCHAR(80)); CREATE TABLE Charges (charge_id INTEGER, charge_type VARCHAR(10), charge_amount DECIMAL(19,4)); CREATE TABLE Sizes (size_code VARCHAR(10), size_description VARCHAR(80)); CREATE TABLE Treatment_Types (treatment_type_code VARCHAR(10), treatment_type_description VARCHAR(80)); CREATE TABLE Owners (owner_id INTEGER, first_name VARCHAR(50), last_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Dogs (dog_id INTEGER, owner_id INTEGER, abandoned_yn VARCHAR(1), breed_code VARCHAR(10), size_code VARCHAR(10), name VARCHAR(50), age VARCHAR(20), date_of_birth DATETIME, gender VARCHAR(1), weight VARCHAR(20), date_arrived DATETIME, date_adopted DATETIME, date_departed DATETIME); CREATE TABLE Professionals (professional_id INTEGER, role_code VARCHAR(10), first_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), last_name VARCHAR(50), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Treatments (treatment_id INTEGER, dog_id INTEGER, professional_id INTEGER, treatment_type_code VARCHAR(10), date_of_treatment DATETIME, cost_of_treatment DECIMAL(19,4));

medium

dog_kennels

SELECT email_address FROM Professionals WHERE state = 'Hawaii' OR state = 'Wisconsin'

What are the emails of the professionals living in either the state of Hawaii or the state of Wisconsin?

CREATE TABLE `Breeds` ( `breed_code` VARCHAR(10) PRIMARY KEY , `breed_name` VARCHAR(80) ); CREATE TABLE `Charges` ( `charge_id` INTEGER PRIMARY KEY , `charge_type` VARCHAR(10), `charge_amount` DECIMAL(19,4) ); CREATE TABLE `Sizes` ( `size_code` VARCHAR(10) PRIMARY KEY , `size_description` VARCHAR(80) ); CREATE TABLE `Treatment_Types` ( `treatment_type_code` VARCHAR(10) PRIMARY KEY , `treatment_type_description` VARCHAR(80) ); CREATE TABLE `Owners` ( `owner_id` INTEGER PRIMARY KEY , `first_name` VARCHAR(50), `last_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Dogs` ( `dog_id` INTEGER PRIMARY KEY , `owner_id` INTEGER NOT NULL, `abandoned_yn` VARCHAR(1), `breed_code` VARCHAR(10) NOT NULL, `size_code` VARCHAR(10) NOT NULL, `name` VARCHAR(50), `age` VARCHAR(20), `date_of_birth` DATETIME, `gender` VARCHAR(1), `weight` VARCHAR(20), `date_arrived` DATETIME, `date_adopted` DATETIME, `date_departed` DATETIME, FOREIGN KEY (`breed_code` ) REFERENCES `Breeds`(`breed_code` ), FOREIGN KEY (`size_code` ) REFERENCES `Sizes`(`size_code` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ) ); CREATE TABLE `Professionals` ( `professional_id` INTEGER PRIMARY KEY , `role_code` VARCHAR(10) NOT NULL, `first_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `last_name` VARCHAR(50), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Treatments` ( `treatment_id` INTEGER PRIMARY KEY , `dog_id` INTEGER NOT NULL, `professional_id` INTEGER NOT NULL, `treatment_type_code` VARCHAR(10) NOT NULL, `date_of_treatment` DATETIME, `cost_of_treatment` DECIMAL(19,4), FOREIGN KEY (`treatment_type_code` ) REFERENCES `Treatment_Types`(`treatment_type_code` ), FOREIGN KEY (`professional_id` ) REFERENCES `Professionals`(`professional_id` ), FOREIGN KEY (`dog_id` ) REFERENCES `Dogs`(`dog_id` ) );

CREATE TABLE Breeds (breed_code VARCHAR(10), breed_name VARCHAR(80)); CREATE TABLE Charges (charge_id INTEGER, charge_type VARCHAR(10), charge_amount DECIMAL(19,4)); CREATE TABLE Sizes (size_code VARCHAR(10), size_description VARCHAR(80)); CREATE TABLE Treatment_Types (treatment_type_code VARCHAR(10), treatment_type_description VARCHAR(80)); CREATE TABLE Owners (owner_id INTEGER, first_name VARCHAR(50), last_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Dogs (dog_id INTEGER, owner_id INTEGER, abandoned_yn VARCHAR(1), breed_code VARCHAR(10), size_code VARCHAR(10), name VARCHAR(50), age VARCHAR(20), date_of_birth DATETIME, gender VARCHAR(1), weight VARCHAR(20), date_arrived DATETIME, date_adopted DATETIME, date_departed DATETIME); CREATE TABLE Professionals (professional_id INTEGER, role_code VARCHAR(10), first_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), last_name VARCHAR(50), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Treatments (treatment_id INTEGER, dog_id INTEGER, professional_id INTEGER, treatment_type_code VARCHAR(10), date_of_treatment DATETIME, cost_of_treatment DECIMAL(19,4));

medium

dog_kennels

SELECT date_arrived , date_departed FROM Dogs

What are the arriving date and the departing date of all the dogs?

CREATE TABLE `Breeds` ( `breed_code` VARCHAR(10) PRIMARY KEY , `breed_name` VARCHAR(80) ); CREATE TABLE `Charges` ( `charge_id` INTEGER PRIMARY KEY , `charge_type` VARCHAR(10), `charge_amount` DECIMAL(19,4) ); CREATE TABLE `Sizes` ( `size_code` VARCHAR(10) PRIMARY KEY , `size_description` VARCHAR(80) ); CREATE TABLE `Treatment_Types` ( `treatment_type_code` VARCHAR(10) PRIMARY KEY , `treatment_type_description` VARCHAR(80) ); CREATE TABLE `Owners` ( `owner_id` INTEGER PRIMARY KEY , `first_name` VARCHAR(50), `last_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Dogs` ( `dog_id` INTEGER PRIMARY KEY , `owner_id` INTEGER NOT NULL, `abandoned_yn` VARCHAR(1), `breed_code` VARCHAR(10) NOT NULL, `size_code` VARCHAR(10) NOT NULL, `name` VARCHAR(50), `age` VARCHAR(20), `date_of_birth` DATETIME, `gender` VARCHAR(1), `weight` VARCHAR(20), `date_arrived` DATETIME, `date_adopted` DATETIME, `date_departed` DATETIME, FOREIGN KEY (`breed_code` ) REFERENCES `Breeds`(`breed_code` ), FOREIGN KEY (`size_code` ) REFERENCES `Sizes`(`size_code` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ) ); CREATE TABLE `Professionals` ( `professional_id` INTEGER PRIMARY KEY , `role_code` VARCHAR(10) NOT NULL, `first_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `last_name` VARCHAR(50), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Treatments` ( `treatment_id` INTEGER PRIMARY KEY , `dog_id` INTEGER NOT NULL, `professional_id` INTEGER NOT NULL, `treatment_type_code` VARCHAR(10) NOT NULL, `date_of_treatment` DATETIME, `cost_of_treatment` DECIMAL(19,4), FOREIGN KEY (`treatment_type_code` ) REFERENCES `Treatment_Types`(`treatment_type_code` ), FOREIGN KEY (`professional_id` ) REFERENCES `Professionals`(`professional_id` ), FOREIGN KEY (`dog_id` ) REFERENCES `Dogs`(`dog_id` ) );

CREATE TABLE Breeds (breed_code VARCHAR(10), breed_name VARCHAR(80)); CREATE TABLE Charges (charge_id INTEGER, charge_type VARCHAR(10), charge_amount DECIMAL(19,4)); CREATE TABLE Sizes (size_code VARCHAR(10), size_description VARCHAR(80)); CREATE TABLE Treatment_Types (treatment_type_code VARCHAR(10), treatment_type_description VARCHAR(80)); CREATE TABLE Owners (owner_id INTEGER, first_name VARCHAR(50), last_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Dogs (dog_id INTEGER, owner_id INTEGER, abandoned_yn VARCHAR(1), breed_code VARCHAR(10), size_code VARCHAR(10), name VARCHAR(50), age VARCHAR(20), date_of_birth DATETIME, gender VARCHAR(1), weight VARCHAR(20), date_arrived DATETIME, date_adopted DATETIME, date_departed DATETIME); CREATE TABLE Professionals (professional_id INTEGER, role_code VARCHAR(10), first_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), last_name VARCHAR(50), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Treatments (treatment_id INTEGER, dog_id INTEGER, professional_id INTEGER, treatment_type_code VARCHAR(10), date_of_treatment DATETIME, cost_of_treatment DECIMAL(19,4));

medium

dog_kennels

SELECT date_arrived , date_departed FROM Dogs

List the arrival date and the departure date for all the dogs.

CREATE TABLE `Breeds` ( `breed_code` VARCHAR(10) PRIMARY KEY , `breed_name` VARCHAR(80) ); CREATE TABLE `Charges` ( `charge_id` INTEGER PRIMARY KEY , `charge_type` VARCHAR(10), `charge_amount` DECIMAL(19,4) ); CREATE TABLE `Sizes` ( `size_code` VARCHAR(10) PRIMARY KEY , `size_description` VARCHAR(80) ); CREATE TABLE `Treatment_Types` ( `treatment_type_code` VARCHAR(10) PRIMARY KEY , `treatment_type_description` VARCHAR(80) ); CREATE TABLE `Owners` ( `owner_id` INTEGER PRIMARY KEY , `first_name` VARCHAR(50), `last_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Dogs` ( `dog_id` INTEGER PRIMARY KEY , `owner_id` INTEGER NOT NULL, `abandoned_yn` VARCHAR(1), `breed_code` VARCHAR(10) NOT NULL, `size_code` VARCHAR(10) NOT NULL, `name` VARCHAR(50), `age` VARCHAR(20), `date_of_birth` DATETIME, `gender` VARCHAR(1), `weight` VARCHAR(20), `date_arrived` DATETIME, `date_adopted` DATETIME, `date_departed` DATETIME, FOREIGN KEY (`breed_code` ) REFERENCES `Breeds`(`breed_code` ), FOREIGN KEY (`size_code` ) REFERENCES `Sizes`(`size_code` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ) ); CREATE TABLE `Professionals` ( `professional_id` INTEGER PRIMARY KEY , `role_code` VARCHAR(10) NOT NULL, `first_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `last_name` VARCHAR(50), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Treatments` ( `treatment_id` INTEGER PRIMARY KEY , `dog_id` INTEGER NOT NULL, `professional_id` INTEGER NOT NULL, `treatment_type_code` VARCHAR(10) NOT NULL, `date_of_treatment` DATETIME, `cost_of_treatment` DECIMAL(19,4), FOREIGN KEY (`treatment_type_code` ) REFERENCES `Treatment_Types`(`treatment_type_code` ), FOREIGN KEY (`professional_id` ) REFERENCES `Professionals`(`professional_id` ), FOREIGN KEY (`dog_id` ) REFERENCES `Dogs`(`dog_id` ) );

CREATE TABLE Breeds (breed_code VARCHAR(10), breed_name VARCHAR(80)); CREATE TABLE Charges (charge_id INTEGER, charge_type VARCHAR(10), charge_amount DECIMAL(19,4)); CREATE TABLE Sizes (size_code VARCHAR(10), size_description VARCHAR(80)); CREATE TABLE Treatment_Types (treatment_type_code VARCHAR(10), treatment_type_description VARCHAR(80)); CREATE TABLE Owners (owner_id INTEGER, first_name VARCHAR(50), last_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Dogs (dog_id INTEGER, owner_id INTEGER, abandoned_yn VARCHAR(1), breed_code VARCHAR(10), size_code VARCHAR(10), name VARCHAR(50), age VARCHAR(20), date_of_birth DATETIME, gender VARCHAR(1), weight VARCHAR(20), date_arrived DATETIME, date_adopted DATETIME, date_departed DATETIME); CREATE TABLE Professionals (professional_id INTEGER, role_code VARCHAR(10), first_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), last_name VARCHAR(50), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Treatments (treatment_id INTEGER, dog_id INTEGER, professional_id INTEGER, treatment_type_code VARCHAR(10), date_of_treatment DATETIME, cost_of_treatment DECIMAL(19,4));

medium

dog_kennels

SELECT count(DISTINCT dog_id) FROM Treatments

How many dogs went through any treatments?

CREATE TABLE `Breeds` ( `breed_code` VARCHAR(10) PRIMARY KEY , `breed_name` VARCHAR(80) ); CREATE TABLE `Charges` ( `charge_id` INTEGER PRIMARY KEY , `charge_type` VARCHAR(10), `charge_amount` DECIMAL(19,4) ); CREATE TABLE `Sizes` ( `size_code` VARCHAR(10) PRIMARY KEY , `size_description` VARCHAR(80) ); CREATE TABLE `Treatment_Types` ( `treatment_type_code` VARCHAR(10) PRIMARY KEY , `treatment_type_description` VARCHAR(80) ); CREATE TABLE `Owners` ( `owner_id` INTEGER PRIMARY KEY , `first_name` VARCHAR(50), `last_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Dogs` ( `dog_id` INTEGER PRIMARY KEY , `owner_id` INTEGER NOT NULL, `abandoned_yn` VARCHAR(1), `breed_code` VARCHAR(10) NOT NULL, `size_code` VARCHAR(10) NOT NULL, `name` VARCHAR(50), `age` VARCHAR(20), `date_of_birth` DATETIME, `gender` VARCHAR(1), `weight` VARCHAR(20), `date_arrived` DATETIME, `date_adopted` DATETIME, `date_departed` DATETIME, FOREIGN KEY (`breed_code` ) REFERENCES `Breeds`(`breed_code` ), FOREIGN KEY (`size_code` ) REFERENCES `Sizes`(`size_code` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ) ); CREATE TABLE `Professionals` ( `professional_id` INTEGER PRIMARY KEY , `role_code` VARCHAR(10) NOT NULL, `first_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `last_name` VARCHAR(50), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Treatments` ( `treatment_id` INTEGER PRIMARY KEY , `dog_id` INTEGER NOT NULL, `professional_id` INTEGER NOT NULL, `treatment_type_code` VARCHAR(10) NOT NULL, `date_of_treatment` DATETIME, `cost_of_treatment` DECIMAL(19,4), FOREIGN KEY (`treatment_type_code` ) REFERENCES `Treatment_Types`(`treatment_type_code` ), FOREIGN KEY (`professional_id` ) REFERENCES `Professionals`(`professional_id` ), FOREIGN KEY (`dog_id` ) REFERENCES `Dogs`(`dog_id` ) );

CREATE TABLE Breeds (breed_code VARCHAR(10), breed_name VARCHAR(80)); CREATE TABLE Charges (charge_id INTEGER, charge_type VARCHAR(10), charge_amount DECIMAL(19,4)); CREATE TABLE Sizes (size_code VARCHAR(10), size_description VARCHAR(80)); CREATE TABLE Treatment_Types (treatment_type_code VARCHAR(10), treatment_type_description VARCHAR(80)); CREATE TABLE Owners (owner_id INTEGER, first_name VARCHAR(50), last_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Dogs (dog_id INTEGER, owner_id INTEGER, abandoned_yn VARCHAR(1), breed_code VARCHAR(10), size_code VARCHAR(10), name VARCHAR(50), age VARCHAR(20), date_of_birth DATETIME, gender VARCHAR(1), weight VARCHAR(20), date_arrived DATETIME, date_adopted DATETIME, date_departed DATETIME); CREATE TABLE Professionals (professional_id INTEGER, role_code VARCHAR(10), first_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), last_name VARCHAR(50), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Treatments (treatment_id INTEGER, dog_id INTEGER, professional_id INTEGER, treatment_type_code VARCHAR(10), date_of_treatment DATETIME, cost_of_treatment DECIMAL(19,4));

easy

dog_kennels

SELECT count(DISTINCT dog_id) FROM Treatments

Count the number of dogs that went through a treatment.

CREATE TABLE `Breeds` ( `breed_code` VARCHAR(10) PRIMARY KEY , `breed_name` VARCHAR(80) ); CREATE TABLE `Charges` ( `charge_id` INTEGER PRIMARY KEY , `charge_type` VARCHAR(10), `charge_amount` DECIMAL(19,4) ); CREATE TABLE `Sizes` ( `size_code` VARCHAR(10) PRIMARY KEY , `size_description` VARCHAR(80) ); CREATE TABLE `Treatment_Types` ( `treatment_type_code` VARCHAR(10) PRIMARY KEY , `treatment_type_description` VARCHAR(80) ); CREATE TABLE `Owners` ( `owner_id` INTEGER PRIMARY KEY , `first_name` VARCHAR(50), `last_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Dogs` ( `dog_id` INTEGER PRIMARY KEY , `owner_id` INTEGER NOT NULL, `abandoned_yn` VARCHAR(1), `breed_code` VARCHAR(10) NOT NULL, `size_code` VARCHAR(10) NOT NULL, `name` VARCHAR(50), `age` VARCHAR(20), `date_of_birth` DATETIME, `gender` VARCHAR(1), `weight` VARCHAR(20), `date_arrived` DATETIME, `date_adopted` DATETIME, `date_departed` DATETIME, FOREIGN KEY (`breed_code` ) REFERENCES `Breeds`(`breed_code` ), FOREIGN KEY (`size_code` ) REFERENCES `Sizes`(`size_code` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ) ); CREATE TABLE `Professionals` ( `professional_id` INTEGER PRIMARY KEY , `role_code` VARCHAR(10) NOT NULL, `first_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `last_name` VARCHAR(50), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Treatments` ( `treatment_id` INTEGER PRIMARY KEY , `dog_id` INTEGER NOT NULL, `professional_id` INTEGER NOT NULL, `treatment_type_code` VARCHAR(10) NOT NULL, `date_of_treatment` DATETIME, `cost_of_treatment` DECIMAL(19,4), FOREIGN KEY (`treatment_type_code` ) REFERENCES `Treatment_Types`(`treatment_type_code` ), FOREIGN KEY (`professional_id` ) REFERENCES `Professionals`(`professional_id` ), FOREIGN KEY (`dog_id` ) REFERENCES `Dogs`(`dog_id` ) );

CREATE TABLE Breeds (breed_code VARCHAR(10), breed_name VARCHAR(80)); CREATE TABLE Charges (charge_id INTEGER, charge_type VARCHAR(10), charge_amount DECIMAL(19,4)); CREATE TABLE Sizes (size_code VARCHAR(10), size_description VARCHAR(80)); CREATE TABLE Treatment_Types (treatment_type_code VARCHAR(10), treatment_type_description VARCHAR(80)); CREATE TABLE Owners (owner_id INTEGER, first_name VARCHAR(50), last_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Dogs (dog_id INTEGER, owner_id INTEGER, abandoned_yn VARCHAR(1), breed_code VARCHAR(10), size_code VARCHAR(10), name VARCHAR(50), age VARCHAR(20), date_of_birth DATETIME, gender VARCHAR(1), weight VARCHAR(20), date_arrived DATETIME, date_adopted DATETIME, date_departed DATETIME); CREATE TABLE Professionals (professional_id INTEGER, role_code VARCHAR(10), first_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), last_name VARCHAR(50), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Treatments (treatment_id INTEGER, dog_id INTEGER, professional_id INTEGER, treatment_type_code VARCHAR(10), date_of_treatment DATETIME, cost_of_treatment DECIMAL(19,4));

easy

dog_kennels

SELECT count(DISTINCT professional_id) FROM Treatments

How many professionals have performed any treatment to dogs?

CREATE TABLE `Breeds` ( `breed_code` VARCHAR(10) PRIMARY KEY , `breed_name` VARCHAR(80) ); CREATE TABLE `Charges` ( `charge_id` INTEGER PRIMARY KEY , `charge_type` VARCHAR(10), `charge_amount` DECIMAL(19,4) ); CREATE TABLE `Sizes` ( `size_code` VARCHAR(10) PRIMARY KEY , `size_description` VARCHAR(80) ); CREATE TABLE `Treatment_Types` ( `treatment_type_code` VARCHAR(10) PRIMARY KEY , `treatment_type_description` VARCHAR(80) ); CREATE TABLE `Owners` ( `owner_id` INTEGER PRIMARY KEY , `first_name` VARCHAR(50), `last_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Dogs` ( `dog_id` INTEGER PRIMARY KEY , `owner_id` INTEGER NOT NULL, `abandoned_yn` VARCHAR(1), `breed_code` VARCHAR(10) NOT NULL, `size_code` VARCHAR(10) NOT NULL, `name` VARCHAR(50), `age` VARCHAR(20), `date_of_birth` DATETIME, `gender` VARCHAR(1), `weight` VARCHAR(20), `date_arrived` DATETIME, `date_adopted` DATETIME, `date_departed` DATETIME, FOREIGN KEY (`breed_code` ) REFERENCES `Breeds`(`breed_code` ), FOREIGN KEY (`size_code` ) REFERENCES `Sizes`(`size_code` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ) ); CREATE TABLE `Professionals` ( `professional_id` INTEGER PRIMARY KEY , `role_code` VARCHAR(10) NOT NULL, `first_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `last_name` VARCHAR(50), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Treatments` ( `treatment_id` INTEGER PRIMARY KEY , `dog_id` INTEGER NOT NULL, `professional_id` INTEGER NOT NULL, `treatment_type_code` VARCHAR(10) NOT NULL, `date_of_treatment` DATETIME, `cost_of_treatment` DECIMAL(19,4), FOREIGN KEY (`treatment_type_code` ) REFERENCES `Treatment_Types`(`treatment_type_code` ), FOREIGN KEY (`professional_id` ) REFERENCES `Professionals`(`professional_id` ), FOREIGN KEY (`dog_id` ) REFERENCES `Dogs`(`dog_id` ) );

CREATE TABLE Breeds (breed_code VARCHAR(10), breed_name VARCHAR(80)); CREATE TABLE Charges (charge_id INTEGER, charge_type VARCHAR(10), charge_amount DECIMAL(19,4)); CREATE TABLE Sizes (size_code VARCHAR(10), size_description VARCHAR(80)); CREATE TABLE Treatment_Types (treatment_type_code VARCHAR(10), treatment_type_description VARCHAR(80)); CREATE TABLE Owners (owner_id INTEGER, first_name VARCHAR(50), last_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Dogs (dog_id INTEGER, owner_id INTEGER, abandoned_yn VARCHAR(1), breed_code VARCHAR(10), size_code VARCHAR(10), name VARCHAR(50), age VARCHAR(20), date_of_birth DATETIME, gender VARCHAR(1), weight VARCHAR(20), date_arrived DATETIME, date_adopted DATETIME, date_departed DATETIME); CREATE TABLE Professionals (professional_id INTEGER, role_code VARCHAR(10), first_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), last_name VARCHAR(50), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Treatments (treatment_id INTEGER, dog_id INTEGER, professional_id INTEGER, treatment_type_code VARCHAR(10), date_of_treatment DATETIME, cost_of_treatment DECIMAL(19,4));

easy

dog_kennels

SELECT count(DISTINCT professional_id) FROM Treatments

Find the number of professionals who have ever treated dogs.

CREATE TABLE `Breeds` ( `breed_code` VARCHAR(10) PRIMARY KEY , `breed_name` VARCHAR(80) ); CREATE TABLE `Charges` ( `charge_id` INTEGER PRIMARY KEY , `charge_type` VARCHAR(10), `charge_amount` DECIMAL(19,4) ); CREATE TABLE `Sizes` ( `size_code` VARCHAR(10) PRIMARY KEY , `size_description` VARCHAR(80) ); CREATE TABLE `Treatment_Types` ( `treatment_type_code` VARCHAR(10) PRIMARY KEY , `treatment_type_description` VARCHAR(80) ); CREATE TABLE `Owners` ( `owner_id` INTEGER PRIMARY KEY , `first_name` VARCHAR(50), `last_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Dogs` ( `dog_id` INTEGER PRIMARY KEY , `owner_id` INTEGER NOT NULL, `abandoned_yn` VARCHAR(1), `breed_code` VARCHAR(10) NOT NULL, `size_code` VARCHAR(10) NOT NULL, `name` VARCHAR(50), `age` VARCHAR(20), `date_of_birth` DATETIME, `gender` VARCHAR(1), `weight` VARCHAR(20), `date_arrived` DATETIME, `date_adopted` DATETIME, `date_departed` DATETIME, FOREIGN KEY (`breed_code` ) REFERENCES `Breeds`(`breed_code` ), FOREIGN KEY (`size_code` ) REFERENCES `Sizes`(`size_code` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ) ); CREATE TABLE `Professionals` ( `professional_id` INTEGER PRIMARY KEY , `role_code` VARCHAR(10) NOT NULL, `first_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `last_name` VARCHAR(50), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Treatments` ( `treatment_id` INTEGER PRIMARY KEY , `dog_id` INTEGER NOT NULL, `professional_id` INTEGER NOT NULL, `treatment_type_code` VARCHAR(10) NOT NULL, `date_of_treatment` DATETIME, `cost_of_treatment` DECIMAL(19,4), FOREIGN KEY (`treatment_type_code` ) REFERENCES `Treatment_Types`(`treatment_type_code` ), FOREIGN KEY (`professional_id` ) REFERENCES `Professionals`(`professional_id` ), FOREIGN KEY (`dog_id` ) REFERENCES `Dogs`(`dog_id` ) );

CREATE TABLE Breeds (breed_code VARCHAR(10), breed_name VARCHAR(80)); CREATE TABLE Charges (charge_id INTEGER, charge_type VARCHAR(10), charge_amount DECIMAL(19,4)); CREATE TABLE Sizes (size_code VARCHAR(10), size_description VARCHAR(80)); CREATE TABLE Treatment_Types (treatment_type_code VARCHAR(10), treatment_type_description VARCHAR(80)); CREATE TABLE Owners (owner_id INTEGER, first_name VARCHAR(50), last_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Dogs (dog_id INTEGER, owner_id INTEGER, abandoned_yn VARCHAR(1), breed_code VARCHAR(10), size_code VARCHAR(10), name VARCHAR(50), age VARCHAR(20), date_of_birth DATETIME, gender VARCHAR(1), weight VARCHAR(20), date_arrived DATETIME, date_adopted DATETIME, date_departed DATETIME); CREATE TABLE Professionals (professional_id INTEGER, role_code VARCHAR(10), first_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), last_name VARCHAR(50), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Treatments (treatment_id INTEGER, dog_id INTEGER, professional_id INTEGER, treatment_type_code VARCHAR(10), date_of_treatment DATETIME, cost_of_treatment DECIMAL(19,4));

easy

dog_kennels

SELECT role_code , street , city , state FROM professionals WHERE city LIKE '%West%'

Which professionals live in a city containing the substring 'West'? List his or her role, street, city and state.

CREATE TABLE `Breeds` ( `breed_code` VARCHAR(10) PRIMARY KEY , `breed_name` VARCHAR(80) ); CREATE TABLE `Charges` ( `charge_id` INTEGER PRIMARY KEY , `charge_type` VARCHAR(10), `charge_amount` DECIMAL(19,4) ); CREATE TABLE `Sizes` ( `size_code` VARCHAR(10) PRIMARY KEY , `size_description` VARCHAR(80) ); CREATE TABLE `Treatment_Types` ( `treatment_type_code` VARCHAR(10) PRIMARY KEY , `treatment_type_description` VARCHAR(80) ); CREATE TABLE `Owners` ( `owner_id` INTEGER PRIMARY KEY , `first_name` VARCHAR(50), `last_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Dogs` ( `dog_id` INTEGER PRIMARY KEY , `owner_id` INTEGER NOT NULL, `abandoned_yn` VARCHAR(1), `breed_code` VARCHAR(10) NOT NULL, `size_code` VARCHAR(10) NOT NULL, `name` VARCHAR(50), `age` VARCHAR(20), `date_of_birth` DATETIME, `gender` VARCHAR(1), `weight` VARCHAR(20), `date_arrived` DATETIME, `date_adopted` DATETIME, `date_departed` DATETIME, FOREIGN KEY (`breed_code` ) REFERENCES `Breeds`(`breed_code` ), FOREIGN KEY (`size_code` ) REFERENCES `Sizes`(`size_code` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ) ); CREATE TABLE `Professionals` ( `professional_id` INTEGER PRIMARY KEY , `role_code` VARCHAR(10) NOT NULL, `first_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `last_name` VARCHAR(50), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Treatments` ( `treatment_id` INTEGER PRIMARY KEY , `dog_id` INTEGER NOT NULL, `professional_id` INTEGER NOT NULL, `treatment_type_code` VARCHAR(10) NOT NULL, `date_of_treatment` DATETIME, `cost_of_treatment` DECIMAL(19,4), FOREIGN KEY (`treatment_type_code` ) REFERENCES `Treatment_Types`(`treatment_type_code` ), FOREIGN KEY (`professional_id` ) REFERENCES `Professionals`(`professional_id` ), FOREIGN KEY (`dog_id` ) REFERENCES `Dogs`(`dog_id` ) );

CREATE TABLE Breeds (breed_code VARCHAR(10), breed_name VARCHAR(80)); CREATE TABLE Charges (charge_id INTEGER, charge_type VARCHAR(10), charge_amount DECIMAL(19,4)); CREATE TABLE Sizes (size_code VARCHAR(10), size_description VARCHAR(80)); CREATE TABLE Treatment_Types (treatment_type_code VARCHAR(10), treatment_type_description VARCHAR(80)); CREATE TABLE Owners (owner_id INTEGER, first_name VARCHAR(50), last_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Dogs (dog_id INTEGER, owner_id INTEGER, abandoned_yn VARCHAR(1), breed_code VARCHAR(10), size_code VARCHAR(10), name VARCHAR(50), age VARCHAR(20), date_of_birth DATETIME, gender VARCHAR(1), weight VARCHAR(20), date_arrived DATETIME, date_adopted DATETIME, date_departed DATETIME); CREATE TABLE Professionals (professional_id INTEGER, role_code VARCHAR(10), first_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), last_name VARCHAR(50), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Treatments (treatment_id INTEGER, dog_id INTEGER, professional_id INTEGER, treatment_type_code VARCHAR(10), date_of_treatment DATETIME, cost_of_treatment DECIMAL(19,4));

medium

dog_kennels

SELECT role_code , street , city , state FROM professionals WHERE city LIKE '%West%'

Find the role, street, city and state of the professionals living in a city that contains the substring 'West'.

CREATE TABLE `Breeds` ( `breed_code` VARCHAR(10) PRIMARY KEY , `breed_name` VARCHAR(80) ); CREATE TABLE `Charges` ( `charge_id` INTEGER PRIMARY KEY , `charge_type` VARCHAR(10), `charge_amount` DECIMAL(19,4) ); CREATE TABLE `Sizes` ( `size_code` VARCHAR(10) PRIMARY KEY , `size_description` VARCHAR(80) ); CREATE TABLE `Treatment_Types` ( `treatment_type_code` VARCHAR(10) PRIMARY KEY , `treatment_type_description` VARCHAR(80) ); CREATE TABLE `Owners` ( `owner_id` INTEGER PRIMARY KEY , `first_name` VARCHAR(50), `last_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Dogs` ( `dog_id` INTEGER PRIMARY KEY , `owner_id` INTEGER NOT NULL, `abandoned_yn` VARCHAR(1), `breed_code` VARCHAR(10) NOT NULL, `size_code` VARCHAR(10) NOT NULL, `name` VARCHAR(50), `age` VARCHAR(20), `date_of_birth` DATETIME, `gender` VARCHAR(1), `weight` VARCHAR(20), `date_arrived` DATETIME, `date_adopted` DATETIME, `date_departed` DATETIME, FOREIGN KEY (`breed_code` ) REFERENCES `Breeds`(`breed_code` ), FOREIGN KEY (`size_code` ) REFERENCES `Sizes`(`size_code` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ) ); CREATE TABLE `Professionals` ( `professional_id` INTEGER PRIMARY KEY , `role_code` VARCHAR(10) NOT NULL, `first_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `last_name` VARCHAR(50), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Treatments` ( `treatment_id` INTEGER PRIMARY KEY , `dog_id` INTEGER NOT NULL, `professional_id` INTEGER NOT NULL, `treatment_type_code` VARCHAR(10) NOT NULL, `date_of_treatment` DATETIME, `cost_of_treatment` DECIMAL(19,4), FOREIGN KEY (`treatment_type_code` ) REFERENCES `Treatment_Types`(`treatment_type_code` ), FOREIGN KEY (`professional_id` ) REFERENCES `Professionals`(`professional_id` ), FOREIGN KEY (`dog_id` ) REFERENCES `Dogs`(`dog_id` ) );

CREATE TABLE Breeds (breed_code VARCHAR(10), breed_name VARCHAR(80)); CREATE TABLE Charges (charge_id INTEGER, charge_type VARCHAR(10), charge_amount DECIMAL(19,4)); CREATE TABLE Sizes (size_code VARCHAR(10), size_description VARCHAR(80)); CREATE TABLE Treatment_Types (treatment_type_code VARCHAR(10), treatment_type_description VARCHAR(80)); CREATE TABLE Owners (owner_id INTEGER, first_name VARCHAR(50), last_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Dogs (dog_id INTEGER, owner_id INTEGER, abandoned_yn VARCHAR(1), breed_code VARCHAR(10), size_code VARCHAR(10), name VARCHAR(50), age VARCHAR(20), date_of_birth DATETIME, gender VARCHAR(1), weight VARCHAR(20), date_arrived DATETIME, date_adopted DATETIME, date_departed DATETIME); CREATE TABLE Professionals (professional_id INTEGER, role_code VARCHAR(10), first_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), last_name VARCHAR(50), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Treatments (treatment_id INTEGER, dog_id INTEGER, professional_id INTEGER, treatment_type_code VARCHAR(10), date_of_treatment DATETIME, cost_of_treatment DECIMAL(19,4));

medium

dog_kennels

SELECT first_name , last_name , email_address FROM Owners WHERE state LIKE '%North%'

Which owners live in the state whose name contains the substring 'North'? List his first name, last name and email.

CREATE TABLE `Breeds` ( `breed_code` VARCHAR(10) PRIMARY KEY , `breed_name` VARCHAR(80) ); CREATE TABLE `Charges` ( `charge_id` INTEGER PRIMARY KEY , `charge_type` VARCHAR(10), `charge_amount` DECIMAL(19,4) ); CREATE TABLE `Sizes` ( `size_code` VARCHAR(10) PRIMARY KEY , `size_description` VARCHAR(80) ); CREATE TABLE `Treatment_Types` ( `treatment_type_code` VARCHAR(10) PRIMARY KEY , `treatment_type_description` VARCHAR(80) ); CREATE TABLE `Owners` ( `owner_id` INTEGER PRIMARY KEY , `first_name` VARCHAR(50), `last_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Dogs` ( `dog_id` INTEGER PRIMARY KEY , `owner_id` INTEGER NOT NULL, `abandoned_yn` VARCHAR(1), `breed_code` VARCHAR(10) NOT NULL, `size_code` VARCHAR(10) NOT NULL, `name` VARCHAR(50), `age` VARCHAR(20), `date_of_birth` DATETIME, `gender` VARCHAR(1), `weight` VARCHAR(20), `date_arrived` DATETIME, `date_adopted` DATETIME, `date_departed` DATETIME, FOREIGN KEY (`breed_code` ) REFERENCES `Breeds`(`breed_code` ), FOREIGN KEY (`size_code` ) REFERENCES `Sizes`(`size_code` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ) ); CREATE TABLE `Professionals` ( `professional_id` INTEGER PRIMARY KEY , `role_code` VARCHAR(10) NOT NULL, `first_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `last_name` VARCHAR(50), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Treatments` ( `treatment_id` INTEGER PRIMARY KEY , `dog_id` INTEGER NOT NULL, `professional_id` INTEGER NOT NULL, `treatment_type_code` VARCHAR(10) NOT NULL, `date_of_treatment` DATETIME, `cost_of_treatment` DECIMAL(19,4), FOREIGN KEY (`treatment_type_code` ) REFERENCES `Treatment_Types`(`treatment_type_code` ), FOREIGN KEY (`professional_id` ) REFERENCES `Professionals`(`professional_id` ), FOREIGN KEY (`dog_id` ) REFERENCES `Dogs`(`dog_id` ) );

CREATE TABLE Breeds (breed_code VARCHAR(10), breed_name VARCHAR(80)); CREATE TABLE Charges (charge_id INTEGER, charge_type VARCHAR(10), charge_amount DECIMAL(19,4)); CREATE TABLE Sizes (size_code VARCHAR(10), size_description VARCHAR(80)); CREATE TABLE Treatment_Types (treatment_type_code VARCHAR(10), treatment_type_description VARCHAR(80)); CREATE TABLE Owners (owner_id INTEGER, first_name VARCHAR(50), last_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Dogs (dog_id INTEGER, owner_id INTEGER, abandoned_yn VARCHAR(1), breed_code VARCHAR(10), size_code VARCHAR(10), name VARCHAR(50), age VARCHAR(20), date_of_birth DATETIME, gender VARCHAR(1), weight VARCHAR(20), date_arrived DATETIME, date_adopted DATETIME, date_departed DATETIME); CREATE TABLE Professionals (professional_id INTEGER, role_code VARCHAR(10), first_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), last_name VARCHAR(50), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Treatments (treatment_id INTEGER, dog_id INTEGER, professional_id INTEGER, treatment_type_code VARCHAR(10), date_of_treatment DATETIME, cost_of_treatment DECIMAL(19,4));

medium

dog_kennels

SELECT first_name , last_name , email_address FROM Owners WHERE state LIKE '%North%'

Return the first name, last name and email of the owners living in a state whose name contains the substring 'North'.

CREATE TABLE `Breeds` ( `breed_code` VARCHAR(10) PRIMARY KEY , `breed_name` VARCHAR(80) ); CREATE TABLE `Charges` ( `charge_id` INTEGER PRIMARY KEY , `charge_type` VARCHAR(10), `charge_amount` DECIMAL(19,4) ); CREATE TABLE `Sizes` ( `size_code` VARCHAR(10) PRIMARY KEY , `size_description` VARCHAR(80) ); CREATE TABLE `Treatment_Types` ( `treatment_type_code` VARCHAR(10) PRIMARY KEY , `treatment_type_description` VARCHAR(80) ); CREATE TABLE `Owners` ( `owner_id` INTEGER PRIMARY KEY , `first_name` VARCHAR(50), `last_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Dogs` ( `dog_id` INTEGER PRIMARY KEY , `owner_id` INTEGER NOT NULL, `abandoned_yn` VARCHAR(1), `breed_code` VARCHAR(10) NOT NULL, `size_code` VARCHAR(10) NOT NULL, `name` VARCHAR(50), `age` VARCHAR(20), `date_of_birth` DATETIME, `gender` VARCHAR(1), `weight` VARCHAR(20), `date_arrived` DATETIME, `date_adopted` DATETIME, `date_departed` DATETIME, FOREIGN KEY (`breed_code` ) REFERENCES `Breeds`(`breed_code` ), FOREIGN KEY (`size_code` ) REFERENCES `Sizes`(`size_code` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ) ); CREATE TABLE `Professionals` ( `professional_id` INTEGER PRIMARY KEY , `role_code` VARCHAR(10) NOT NULL, `first_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `last_name` VARCHAR(50), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Treatments` ( `treatment_id` INTEGER PRIMARY KEY , `dog_id` INTEGER NOT NULL, `professional_id` INTEGER NOT NULL, `treatment_type_code` VARCHAR(10) NOT NULL, `date_of_treatment` DATETIME, `cost_of_treatment` DECIMAL(19,4), FOREIGN KEY (`treatment_type_code` ) REFERENCES `Treatment_Types`(`treatment_type_code` ), FOREIGN KEY (`professional_id` ) REFERENCES `Professionals`(`professional_id` ), FOREIGN KEY (`dog_id` ) REFERENCES `Dogs`(`dog_id` ) );

CREATE TABLE Breeds (breed_code VARCHAR(10), breed_name VARCHAR(80)); CREATE TABLE Charges (charge_id INTEGER, charge_type VARCHAR(10), charge_amount DECIMAL(19,4)); CREATE TABLE Sizes (size_code VARCHAR(10), size_description VARCHAR(80)); CREATE TABLE Treatment_Types (treatment_type_code VARCHAR(10), treatment_type_description VARCHAR(80)); CREATE TABLE Owners (owner_id INTEGER, first_name VARCHAR(50), last_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Dogs (dog_id INTEGER, owner_id INTEGER, abandoned_yn VARCHAR(1), breed_code VARCHAR(10), size_code VARCHAR(10), name VARCHAR(50), age VARCHAR(20), date_of_birth DATETIME, gender VARCHAR(1), weight VARCHAR(20), date_arrived DATETIME, date_adopted DATETIME, date_departed DATETIME); CREATE TABLE Professionals (professional_id INTEGER, role_code VARCHAR(10), first_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), last_name VARCHAR(50), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Treatments (treatment_id INTEGER, dog_id INTEGER, professional_id INTEGER, treatment_type_code VARCHAR(10), date_of_treatment DATETIME, cost_of_treatment DECIMAL(19,4));

medium

dog_kennels

SELECT count(*) FROM Dogs WHERE age < ( SELECT avg(age) FROM Dogs )

How many dogs have an age below the average?

CREATE TABLE `Breeds` ( `breed_code` VARCHAR(10) PRIMARY KEY , `breed_name` VARCHAR(80) ); CREATE TABLE `Charges` ( `charge_id` INTEGER PRIMARY KEY , `charge_type` VARCHAR(10), `charge_amount` DECIMAL(19,4) ); CREATE TABLE `Sizes` ( `size_code` VARCHAR(10) PRIMARY KEY , `size_description` VARCHAR(80) ); CREATE TABLE `Treatment_Types` ( `treatment_type_code` VARCHAR(10) PRIMARY KEY , `treatment_type_description` VARCHAR(80) ); CREATE TABLE `Owners` ( `owner_id` INTEGER PRIMARY KEY , `first_name` VARCHAR(50), `last_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Dogs` ( `dog_id` INTEGER PRIMARY KEY , `owner_id` INTEGER NOT NULL, `abandoned_yn` VARCHAR(1), `breed_code` VARCHAR(10) NOT NULL, `size_code` VARCHAR(10) NOT NULL, `name` VARCHAR(50), `age` VARCHAR(20), `date_of_birth` DATETIME, `gender` VARCHAR(1), `weight` VARCHAR(20), `date_arrived` DATETIME, `date_adopted` DATETIME, `date_departed` DATETIME, FOREIGN KEY (`breed_code` ) REFERENCES `Breeds`(`breed_code` ), FOREIGN KEY (`size_code` ) REFERENCES `Sizes`(`size_code` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ) ); CREATE TABLE `Professionals` ( `professional_id` INTEGER PRIMARY KEY , `role_code` VARCHAR(10) NOT NULL, `first_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `last_name` VARCHAR(50), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Treatments` ( `treatment_id` INTEGER PRIMARY KEY , `dog_id` INTEGER NOT NULL, `professional_id` INTEGER NOT NULL, `treatment_type_code` VARCHAR(10) NOT NULL, `date_of_treatment` DATETIME, `cost_of_treatment` DECIMAL(19,4), FOREIGN KEY (`treatment_type_code` ) REFERENCES `Treatment_Types`(`treatment_type_code` ), FOREIGN KEY (`professional_id` ) REFERENCES `Professionals`(`professional_id` ), FOREIGN KEY (`dog_id` ) REFERENCES `Dogs`(`dog_id` ) );

CREATE TABLE Breeds (breed_code VARCHAR(10), breed_name VARCHAR(80)); CREATE TABLE Charges (charge_id INTEGER, charge_type VARCHAR(10), charge_amount DECIMAL(19,4)); CREATE TABLE Sizes (size_code VARCHAR(10), size_description VARCHAR(80)); CREATE TABLE Treatment_Types (treatment_type_code VARCHAR(10), treatment_type_description VARCHAR(80)); CREATE TABLE Owners (owner_id INTEGER, first_name VARCHAR(50), last_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Dogs (dog_id INTEGER, owner_id INTEGER, abandoned_yn VARCHAR(1), breed_code VARCHAR(10), size_code VARCHAR(10), name VARCHAR(50), age VARCHAR(20), date_of_birth DATETIME, gender VARCHAR(1), weight VARCHAR(20), date_arrived DATETIME, date_adopted DATETIME, date_departed DATETIME); CREATE TABLE Professionals (professional_id INTEGER, role_code VARCHAR(10), first_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), last_name VARCHAR(50), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Treatments (treatment_id INTEGER, dog_id INTEGER, professional_id INTEGER, treatment_type_code VARCHAR(10), date_of_treatment DATETIME, cost_of_treatment DECIMAL(19,4));

hard

dog_kennels

SELECT count(*) FROM Dogs WHERE age < ( SELECT avg(age) FROM Dogs )

Count the number of dogs of an age below the average.

CREATE TABLE `Breeds` ( `breed_code` VARCHAR(10) PRIMARY KEY , `breed_name` VARCHAR(80) ); CREATE TABLE `Charges` ( `charge_id` INTEGER PRIMARY KEY , `charge_type` VARCHAR(10), `charge_amount` DECIMAL(19,4) ); CREATE TABLE `Sizes` ( `size_code` VARCHAR(10) PRIMARY KEY , `size_description` VARCHAR(80) ); CREATE TABLE `Treatment_Types` ( `treatment_type_code` VARCHAR(10) PRIMARY KEY , `treatment_type_description` VARCHAR(80) ); CREATE TABLE `Owners` ( `owner_id` INTEGER PRIMARY KEY , `first_name` VARCHAR(50), `last_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Dogs` ( `dog_id` INTEGER PRIMARY KEY , `owner_id` INTEGER NOT NULL, `abandoned_yn` VARCHAR(1), `breed_code` VARCHAR(10) NOT NULL, `size_code` VARCHAR(10) NOT NULL, `name` VARCHAR(50), `age` VARCHAR(20), `date_of_birth` DATETIME, `gender` VARCHAR(1), `weight` VARCHAR(20), `date_arrived` DATETIME, `date_adopted` DATETIME, `date_departed` DATETIME, FOREIGN KEY (`breed_code` ) REFERENCES `Breeds`(`breed_code` ), FOREIGN KEY (`size_code` ) REFERENCES `Sizes`(`size_code` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ) ); CREATE TABLE `Professionals` ( `professional_id` INTEGER PRIMARY KEY , `role_code` VARCHAR(10) NOT NULL, `first_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `last_name` VARCHAR(50), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Treatments` ( `treatment_id` INTEGER PRIMARY KEY , `dog_id` INTEGER NOT NULL, `professional_id` INTEGER NOT NULL, `treatment_type_code` VARCHAR(10) NOT NULL, `date_of_treatment` DATETIME, `cost_of_treatment` DECIMAL(19,4), FOREIGN KEY (`treatment_type_code` ) REFERENCES `Treatment_Types`(`treatment_type_code` ), FOREIGN KEY (`professional_id` ) REFERENCES `Professionals`(`professional_id` ), FOREIGN KEY (`dog_id` ) REFERENCES `Dogs`(`dog_id` ) );

CREATE TABLE Breeds (breed_code VARCHAR(10), breed_name VARCHAR(80)); CREATE TABLE Charges (charge_id INTEGER, charge_type VARCHAR(10), charge_amount DECIMAL(19,4)); CREATE TABLE Sizes (size_code VARCHAR(10), size_description VARCHAR(80)); CREATE TABLE Treatment_Types (treatment_type_code VARCHAR(10), treatment_type_description VARCHAR(80)); CREATE TABLE Owners (owner_id INTEGER, first_name VARCHAR(50), last_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Dogs (dog_id INTEGER, owner_id INTEGER, abandoned_yn VARCHAR(1), breed_code VARCHAR(10), size_code VARCHAR(10), name VARCHAR(50), age VARCHAR(20), date_of_birth DATETIME, gender VARCHAR(1), weight VARCHAR(20), date_arrived DATETIME, date_adopted DATETIME, date_departed DATETIME); CREATE TABLE Professionals (professional_id INTEGER, role_code VARCHAR(10), first_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), last_name VARCHAR(50), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Treatments (treatment_id INTEGER, dog_id INTEGER, professional_id INTEGER, treatment_type_code VARCHAR(10), date_of_treatment DATETIME, cost_of_treatment DECIMAL(19,4));

hard

dog_kennels

SELECT cost_of_treatment FROM Treatments ORDER BY date_of_treatment DESC LIMIT 1

How much does the most recent treatment cost?

CREATE TABLE `Breeds` ( `breed_code` VARCHAR(10) PRIMARY KEY , `breed_name` VARCHAR(80) ); CREATE TABLE `Charges` ( `charge_id` INTEGER PRIMARY KEY , `charge_type` VARCHAR(10), `charge_amount` DECIMAL(19,4) ); CREATE TABLE `Sizes` ( `size_code` VARCHAR(10) PRIMARY KEY , `size_description` VARCHAR(80) ); CREATE TABLE `Treatment_Types` ( `treatment_type_code` VARCHAR(10) PRIMARY KEY , `treatment_type_description` VARCHAR(80) ); CREATE TABLE `Owners` ( `owner_id` INTEGER PRIMARY KEY , `first_name` VARCHAR(50), `last_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Dogs` ( `dog_id` INTEGER PRIMARY KEY , `owner_id` INTEGER NOT NULL, `abandoned_yn` VARCHAR(1), `breed_code` VARCHAR(10) NOT NULL, `size_code` VARCHAR(10) NOT NULL, `name` VARCHAR(50), `age` VARCHAR(20), `date_of_birth` DATETIME, `gender` VARCHAR(1), `weight` VARCHAR(20), `date_arrived` DATETIME, `date_adopted` DATETIME, `date_departed` DATETIME, FOREIGN KEY (`breed_code` ) REFERENCES `Breeds`(`breed_code` ), FOREIGN KEY (`size_code` ) REFERENCES `Sizes`(`size_code` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ) ); CREATE TABLE `Professionals` ( `professional_id` INTEGER PRIMARY KEY , `role_code` VARCHAR(10) NOT NULL, `first_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `last_name` VARCHAR(50), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Treatments` ( `treatment_id` INTEGER PRIMARY KEY , `dog_id` INTEGER NOT NULL, `professional_id` INTEGER NOT NULL, `treatment_type_code` VARCHAR(10) NOT NULL, `date_of_treatment` DATETIME, `cost_of_treatment` DECIMAL(19,4), FOREIGN KEY (`treatment_type_code` ) REFERENCES `Treatment_Types`(`treatment_type_code` ), FOREIGN KEY (`professional_id` ) REFERENCES `Professionals`(`professional_id` ), FOREIGN KEY (`dog_id` ) REFERENCES `Dogs`(`dog_id` ) );

CREATE TABLE Breeds (breed_code VARCHAR(10), breed_name VARCHAR(80)); CREATE TABLE Charges (charge_id INTEGER, charge_type VARCHAR(10), charge_amount DECIMAL(19,4)); CREATE TABLE Sizes (size_code VARCHAR(10), size_description VARCHAR(80)); CREATE TABLE Treatment_Types (treatment_type_code VARCHAR(10), treatment_type_description VARCHAR(80)); CREATE TABLE Owners (owner_id INTEGER, first_name VARCHAR(50), last_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Dogs (dog_id INTEGER, owner_id INTEGER, abandoned_yn VARCHAR(1), breed_code VARCHAR(10), size_code VARCHAR(10), name VARCHAR(50), age VARCHAR(20), date_of_birth DATETIME, gender VARCHAR(1), weight VARCHAR(20), date_arrived DATETIME, date_adopted DATETIME, date_departed DATETIME); CREATE TABLE Professionals (professional_id INTEGER, role_code VARCHAR(10), first_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), last_name VARCHAR(50), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Treatments (treatment_id INTEGER, dog_id INTEGER, professional_id INTEGER, treatment_type_code VARCHAR(10), date_of_treatment DATETIME, cost_of_treatment DECIMAL(19,4));

medium

dog_kennels

SELECT cost_of_treatment FROM Treatments ORDER BY date_of_treatment DESC LIMIT 1

Show me the cost of the most recently performed treatment.

CREATE TABLE `Breeds` ( `breed_code` VARCHAR(10) PRIMARY KEY , `breed_name` VARCHAR(80) ); CREATE TABLE `Charges` ( `charge_id` INTEGER PRIMARY KEY , `charge_type` VARCHAR(10), `charge_amount` DECIMAL(19,4) ); CREATE TABLE `Sizes` ( `size_code` VARCHAR(10) PRIMARY KEY , `size_description` VARCHAR(80) ); CREATE TABLE `Treatment_Types` ( `treatment_type_code` VARCHAR(10) PRIMARY KEY , `treatment_type_description` VARCHAR(80) ); CREATE TABLE `Owners` ( `owner_id` INTEGER PRIMARY KEY , `first_name` VARCHAR(50), `last_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Dogs` ( `dog_id` INTEGER PRIMARY KEY , `owner_id` INTEGER NOT NULL, `abandoned_yn` VARCHAR(1), `breed_code` VARCHAR(10) NOT NULL, `size_code` VARCHAR(10) NOT NULL, `name` VARCHAR(50), `age` VARCHAR(20), `date_of_birth` DATETIME, `gender` VARCHAR(1), `weight` VARCHAR(20), `date_arrived` DATETIME, `date_adopted` DATETIME, `date_departed` DATETIME, FOREIGN KEY (`breed_code` ) REFERENCES `Breeds`(`breed_code` ), FOREIGN KEY (`size_code` ) REFERENCES `Sizes`(`size_code` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ) ); CREATE TABLE `Professionals` ( `professional_id` INTEGER PRIMARY KEY , `role_code` VARCHAR(10) NOT NULL, `first_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `last_name` VARCHAR(50), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Treatments` ( `treatment_id` INTEGER PRIMARY KEY , `dog_id` INTEGER NOT NULL, `professional_id` INTEGER NOT NULL, `treatment_type_code` VARCHAR(10) NOT NULL, `date_of_treatment` DATETIME, `cost_of_treatment` DECIMAL(19,4), FOREIGN KEY (`treatment_type_code` ) REFERENCES `Treatment_Types`(`treatment_type_code` ), FOREIGN KEY (`professional_id` ) REFERENCES `Professionals`(`professional_id` ), FOREIGN KEY (`dog_id` ) REFERENCES `Dogs`(`dog_id` ) );

CREATE TABLE Breeds (breed_code VARCHAR(10), breed_name VARCHAR(80)); CREATE TABLE Charges (charge_id INTEGER, charge_type VARCHAR(10), charge_amount DECIMAL(19,4)); CREATE TABLE Sizes (size_code VARCHAR(10), size_description VARCHAR(80)); CREATE TABLE Treatment_Types (treatment_type_code VARCHAR(10), treatment_type_description VARCHAR(80)); CREATE TABLE Owners (owner_id INTEGER, first_name VARCHAR(50), last_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Dogs (dog_id INTEGER, owner_id INTEGER, abandoned_yn VARCHAR(1), breed_code VARCHAR(10), size_code VARCHAR(10), name VARCHAR(50), age VARCHAR(20), date_of_birth DATETIME, gender VARCHAR(1), weight VARCHAR(20), date_arrived DATETIME, date_adopted DATETIME, date_departed DATETIME); CREATE TABLE Professionals (professional_id INTEGER, role_code VARCHAR(10), first_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), last_name VARCHAR(50), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Treatments (treatment_id INTEGER, dog_id INTEGER, professional_id INTEGER, treatment_type_code VARCHAR(10), date_of_treatment DATETIME, cost_of_treatment DECIMAL(19,4));

medium

dog_kennels

SELECT count(*) FROM Dogs WHERE dog_id NOT IN ( SELECT dog_id FROM Treatments )

How many dogs have not gone through any treatment?

CREATE TABLE `Breeds` ( `breed_code` VARCHAR(10) PRIMARY KEY , `breed_name` VARCHAR(80) ); CREATE TABLE `Charges` ( `charge_id` INTEGER PRIMARY KEY , `charge_type` VARCHAR(10), `charge_amount` DECIMAL(19,4) ); CREATE TABLE `Sizes` ( `size_code` VARCHAR(10) PRIMARY KEY , `size_description` VARCHAR(80) ); CREATE TABLE `Treatment_Types` ( `treatment_type_code` VARCHAR(10) PRIMARY KEY , `treatment_type_description` VARCHAR(80) ); CREATE TABLE `Owners` ( `owner_id` INTEGER PRIMARY KEY , `first_name` VARCHAR(50), `last_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Dogs` ( `dog_id` INTEGER PRIMARY KEY , `owner_id` INTEGER NOT NULL, `abandoned_yn` VARCHAR(1), `breed_code` VARCHAR(10) NOT NULL, `size_code` VARCHAR(10) NOT NULL, `name` VARCHAR(50), `age` VARCHAR(20), `date_of_birth` DATETIME, `gender` VARCHAR(1), `weight` VARCHAR(20), `date_arrived` DATETIME, `date_adopted` DATETIME, `date_departed` DATETIME, FOREIGN KEY (`breed_code` ) REFERENCES `Breeds`(`breed_code` ), FOREIGN KEY (`size_code` ) REFERENCES `Sizes`(`size_code` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ) ); CREATE TABLE `Professionals` ( `professional_id` INTEGER PRIMARY KEY , `role_code` VARCHAR(10) NOT NULL, `first_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `last_name` VARCHAR(50), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Treatments` ( `treatment_id` INTEGER PRIMARY KEY , `dog_id` INTEGER NOT NULL, `professional_id` INTEGER NOT NULL, `treatment_type_code` VARCHAR(10) NOT NULL, `date_of_treatment` DATETIME, `cost_of_treatment` DECIMAL(19,4), FOREIGN KEY (`treatment_type_code` ) REFERENCES `Treatment_Types`(`treatment_type_code` ), FOREIGN KEY (`professional_id` ) REFERENCES `Professionals`(`professional_id` ), FOREIGN KEY (`dog_id` ) REFERENCES `Dogs`(`dog_id` ) );

CREATE TABLE Breeds (breed_code VARCHAR(10), breed_name VARCHAR(80)); CREATE TABLE Charges (charge_id INTEGER, charge_type VARCHAR(10), charge_amount DECIMAL(19,4)); CREATE TABLE Sizes (size_code VARCHAR(10), size_description VARCHAR(80)); CREATE TABLE Treatment_Types (treatment_type_code VARCHAR(10), treatment_type_description VARCHAR(80)); CREATE TABLE Owners (owner_id INTEGER, first_name VARCHAR(50), last_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Dogs (dog_id INTEGER, owner_id INTEGER, abandoned_yn VARCHAR(1), breed_code VARCHAR(10), size_code VARCHAR(10), name VARCHAR(50), age VARCHAR(20), date_of_birth DATETIME, gender VARCHAR(1), weight VARCHAR(20), date_arrived DATETIME, date_adopted DATETIME, date_departed DATETIME); CREATE TABLE Professionals (professional_id INTEGER, role_code VARCHAR(10), first_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), last_name VARCHAR(50), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Treatments (treatment_id INTEGER, dog_id INTEGER, professional_id INTEGER, treatment_type_code VARCHAR(10), date_of_treatment DATETIME, cost_of_treatment DECIMAL(19,4));

extra

dog_kennels

select count(*) from dogs where dog_id not in ( select dog_id from treatments )

Tell me the number of dogs that have not received any treatment .

CREATE TABLE `Breeds` ( `breed_code` VARCHAR(10) PRIMARY KEY , `breed_name` VARCHAR(80) ); CREATE TABLE `Charges` ( `charge_id` INTEGER PRIMARY KEY , `charge_type` VARCHAR(10), `charge_amount` DECIMAL(19,4) ); CREATE TABLE `Sizes` ( `size_code` VARCHAR(10) PRIMARY KEY , `size_description` VARCHAR(80) ); CREATE TABLE `Treatment_Types` ( `treatment_type_code` VARCHAR(10) PRIMARY KEY , `treatment_type_description` VARCHAR(80) ); CREATE TABLE `Owners` ( `owner_id` INTEGER PRIMARY KEY , `first_name` VARCHAR(50), `last_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Dogs` ( `dog_id` INTEGER PRIMARY KEY , `owner_id` INTEGER NOT NULL, `abandoned_yn` VARCHAR(1), `breed_code` VARCHAR(10) NOT NULL, `size_code` VARCHAR(10) NOT NULL, `name` VARCHAR(50), `age` VARCHAR(20), `date_of_birth` DATETIME, `gender` VARCHAR(1), `weight` VARCHAR(20), `date_arrived` DATETIME, `date_adopted` DATETIME, `date_departed` DATETIME, FOREIGN KEY (`breed_code` ) REFERENCES `Breeds`(`breed_code` ), FOREIGN KEY (`size_code` ) REFERENCES `Sizes`(`size_code` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ) ); CREATE TABLE `Professionals` ( `professional_id` INTEGER PRIMARY KEY , `role_code` VARCHAR(10) NOT NULL, `first_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `last_name` VARCHAR(50), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Treatments` ( `treatment_id` INTEGER PRIMARY KEY , `dog_id` INTEGER NOT NULL, `professional_id` INTEGER NOT NULL, `treatment_type_code` VARCHAR(10) NOT NULL, `date_of_treatment` DATETIME, `cost_of_treatment` DECIMAL(19,4), FOREIGN KEY (`treatment_type_code` ) REFERENCES `Treatment_Types`(`treatment_type_code` ), FOREIGN KEY (`professional_id` ) REFERENCES `Professionals`(`professional_id` ), FOREIGN KEY (`dog_id` ) REFERENCES `Dogs`(`dog_id` ) );

CREATE TABLE Breeds (breed_code VARCHAR(10), breed_name VARCHAR(80)); CREATE TABLE Charges (charge_id INTEGER, charge_type VARCHAR(10), charge_amount DECIMAL(19,4)); CREATE TABLE Sizes (size_code VARCHAR(10), size_description VARCHAR(80)); CREATE TABLE Treatment_Types (treatment_type_code VARCHAR(10), treatment_type_description VARCHAR(80)); CREATE TABLE Owners (owner_id INTEGER, first_name VARCHAR(50), last_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Dogs (dog_id INTEGER, owner_id INTEGER, abandoned_yn VARCHAR(1), breed_code VARCHAR(10), size_code VARCHAR(10), name VARCHAR(50), age VARCHAR(20), date_of_birth DATETIME, gender VARCHAR(1), weight VARCHAR(20), date_arrived DATETIME, date_adopted DATETIME, date_departed DATETIME); CREATE TABLE Professionals (professional_id INTEGER, role_code VARCHAR(10), first_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), last_name VARCHAR(50), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Treatments (treatment_id INTEGER, dog_id INTEGER, professional_id INTEGER, treatment_type_code VARCHAR(10), date_of_treatment DATETIME, cost_of_treatment DECIMAL(19,4));

extra

dog_kennels

SELECT count(*) FROM Owners WHERE owner_id NOT IN ( SELECT owner_id FROM Dogs )

How many owners temporarily do not have any dogs?

CREATE TABLE `Breeds` ( `breed_code` VARCHAR(10) PRIMARY KEY , `breed_name` VARCHAR(80) ); CREATE TABLE `Charges` ( `charge_id` INTEGER PRIMARY KEY , `charge_type` VARCHAR(10), `charge_amount` DECIMAL(19,4) ); CREATE TABLE `Sizes` ( `size_code` VARCHAR(10) PRIMARY KEY , `size_description` VARCHAR(80) ); CREATE TABLE `Treatment_Types` ( `treatment_type_code` VARCHAR(10) PRIMARY KEY , `treatment_type_description` VARCHAR(80) ); CREATE TABLE `Owners` ( `owner_id` INTEGER PRIMARY KEY , `first_name` VARCHAR(50), `last_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Dogs` ( `dog_id` INTEGER PRIMARY KEY , `owner_id` INTEGER NOT NULL, `abandoned_yn` VARCHAR(1), `breed_code` VARCHAR(10) NOT NULL, `size_code` VARCHAR(10) NOT NULL, `name` VARCHAR(50), `age` VARCHAR(20), `date_of_birth` DATETIME, `gender` VARCHAR(1), `weight` VARCHAR(20), `date_arrived` DATETIME, `date_adopted` DATETIME, `date_departed` DATETIME, FOREIGN KEY (`breed_code` ) REFERENCES `Breeds`(`breed_code` ), FOREIGN KEY (`size_code` ) REFERENCES `Sizes`(`size_code` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ) ); CREATE TABLE `Professionals` ( `professional_id` INTEGER PRIMARY KEY , `role_code` VARCHAR(10) NOT NULL, `first_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `last_name` VARCHAR(50), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Treatments` ( `treatment_id` INTEGER PRIMARY KEY , `dog_id` INTEGER NOT NULL, `professional_id` INTEGER NOT NULL, `treatment_type_code` VARCHAR(10) NOT NULL, `date_of_treatment` DATETIME, `cost_of_treatment` DECIMAL(19,4), FOREIGN KEY (`treatment_type_code` ) REFERENCES `Treatment_Types`(`treatment_type_code` ), FOREIGN KEY (`professional_id` ) REFERENCES `Professionals`(`professional_id` ), FOREIGN KEY (`dog_id` ) REFERENCES `Dogs`(`dog_id` ) );

CREATE TABLE Breeds (breed_code VARCHAR(10), breed_name VARCHAR(80)); CREATE TABLE Charges (charge_id INTEGER, charge_type VARCHAR(10), charge_amount DECIMAL(19,4)); CREATE TABLE Sizes (size_code VARCHAR(10), size_description VARCHAR(80)); CREATE TABLE Treatment_Types (treatment_type_code VARCHAR(10), treatment_type_description VARCHAR(80)); CREATE TABLE Owners (owner_id INTEGER, first_name VARCHAR(50), last_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Dogs (dog_id INTEGER, owner_id INTEGER, abandoned_yn VARCHAR(1), breed_code VARCHAR(10), size_code VARCHAR(10), name VARCHAR(50), age VARCHAR(20), date_of_birth DATETIME, gender VARCHAR(1), weight VARCHAR(20), date_arrived DATETIME, date_adopted DATETIME, date_departed DATETIME); CREATE TABLE Professionals (professional_id INTEGER, role_code VARCHAR(10), first_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), last_name VARCHAR(50), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Treatments (treatment_id INTEGER, dog_id INTEGER, professional_id INTEGER, treatment_type_code VARCHAR(10), date_of_treatment DATETIME, cost_of_treatment DECIMAL(19,4));

extra

dog_kennels

SELECT count(*) FROM Owners WHERE owner_id NOT IN ( SELECT owner_id FROM Dogs )

Find the number of owners who do not own any dogs at this moment.

CREATE TABLE `Breeds` ( `breed_code` VARCHAR(10) PRIMARY KEY , `breed_name` VARCHAR(80) ); CREATE TABLE `Charges` ( `charge_id` INTEGER PRIMARY KEY , `charge_type` VARCHAR(10), `charge_amount` DECIMAL(19,4) ); CREATE TABLE `Sizes` ( `size_code` VARCHAR(10) PRIMARY KEY , `size_description` VARCHAR(80) ); CREATE TABLE `Treatment_Types` ( `treatment_type_code` VARCHAR(10) PRIMARY KEY , `treatment_type_description` VARCHAR(80) ); CREATE TABLE `Owners` ( `owner_id` INTEGER PRIMARY KEY , `first_name` VARCHAR(50), `last_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Dogs` ( `dog_id` INTEGER PRIMARY KEY , `owner_id` INTEGER NOT NULL, `abandoned_yn` VARCHAR(1), `breed_code` VARCHAR(10) NOT NULL, `size_code` VARCHAR(10) NOT NULL, `name` VARCHAR(50), `age` VARCHAR(20), `date_of_birth` DATETIME, `gender` VARCHAR(1), `weight` VARCHAR(20), `date_arrived` DATETIME, `date_adopted` DATETIME, `date_departed` DATETIME, FOREIGN KEY (`breed_code` ) REFERENCES `Breeds`(`breed_code` ), FOREIGN KEY (`size_code` ) REFERENCES `Sizes`(`size_code` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ) ); CREATE TABLE `Professionals` ( `professional_id` INTEGER PRIMARY KEY , `role_code` VARCHAR(10) NOT NULL, `first_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `last_name` VARCHAR(50), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Treatments` ( `treatment_id` INTEGER PRIMARY KEY , `dog_id` INTEGER NOT NULL, `professional_id` INTEGER NOT NULL, `treatment_type_code` VARCHAR(10) NOT NULL, `date_of_treatment` DATETIME, `cost_of_treatment` DECIMAL(19,4), FOREIGN KEY (`treatment_type_code` ) REFERENCES `Treatment_Types`(`treatment_type_code` ), FOREIGN KEY (`professional_id` ) REFERENCES `Professionals`(`professional_id` ), FOREIGN KEY (`dog_id` ) REFERENCES `Dogs`(`dog_id` ) );

CREATE TABLE Breeds (breed_code VARCHAR(10), breed_name VARCHAR(80)); CREATE TABLE Charges (charge_id INTEGER, charge_type VARCHAR(10), charge_amount DECIMAL(19,4)); CREATE TABLE Sizes (size_code VARCHAR(10), size_description VARCHAR(80)); CREATE TABLE Treatment_Types (treatment_type_code VARCHAR(10), treatment_type_description VARCHAR(80)); CREATE TABLE Owners (owner_id INTEGER, first_name VARCHAR(50), last_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Dogs (dog_id INTEGER, owner_id INTEGER, abandoned_yn VARCHAR(1), breed_code VARCHAR(10), size_code VARCHAR(10), name VARCHAR(50), age VARCHAR(20), date_of_birth DATETIME, gender VARCHAR(1), weight VARCHAR(20), date_arrived DATETIME, date_adopted DATETIME, date_departed DATETIME); CREATE TABLE Professionals (professional_id INTEGER, role_code VARCHAR(10), first_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), last_name VARCHAR(50), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Treatments (treatment_id INTEGER, dog_id INTEGER, professional_id INTEGER, treatment_type_code VARCHAR(10), date_of_treatment DATETIME, cost_of_treatment DECIMAL(19,4));

extra

dog_kennels

SELECT count(*) FROM Professionals WHERE professional_id NOT IN ( SELECT professional_id FROM Treatments )

How many professionals did not operate any treatment on dogs?

CREATE TABLE `Breeds` ( `breed_code` VARCHAR(10) PRIMARY KEY , `breed_name` VARCHAR(80) ); CREATE TABLE `Charges` ( `charge_id` INTEGER PRIMARY KEY , `charge_type` VARCHAR(10), `charge_amount` DECIMAL(19,4) ); CREATE TABLE `Sizes` ( `size_code` VARCHAR(10) PRIMARY KEY , `size_description` VARCHAR(80) ); CREATE TABLE `Treatment_Types` ( `treatment_type_code` VARCHAR(10) PRIMARY KEY , `treatment_type_description` VARCHAR(80) ); CREATE TABLE `Owners` ( `owner_id` INTEGER PRIMARY KEY , `first_name` VARCHAR(50), `last_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Dogs` ( `dog_id` INTEGER PRIMARY KEY , `owner_id` INTEGER NOT NULL, `abandoned_yn` VARCHAR(1), `breed_code` VARCHAR(10) NOT NULL, `size_code` VARCHAR(10) NOT NULL, `name` VARCHAR(50), `age` VARCHAR(20), `date_of_birth` DATETIME, `gender` VARCHAR(1), `weight` VARCHAR(20), `date_arrived` DATETIME, `date_adopted` DATETIME, `date_departed` DATETIME, FOREIGN KEY (`breed_code` ) REFERENCES `Breeds`(`breed_code` ), FOREIGN KEY (`size_code` ) REFERENCES `Sizes`(`size_code` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ) ); CREATE TABLE `Professionals` ( `professional_id` INTEGER PRIMARY KEY , `role_code` VARCHAR(10) NOT NULL, `first_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `last_name` VARCHAR(50), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Treatments` ( `treatment_id` INTEGER PRIMARY KEY , `dog_id` INTEGER NOT NULL, `professional_id` INTEGER NOT NULL, `treatment_type_code` VARCHAR(10) NOT NULL, `date_of_treatment` DATETIME, `cost_of_treatment` DECIMAL(19,4), FOREIGN KEY (`treatment_type_code` ) REFERENCES `Treatment_Types`(`treatment_type_code` ), FOREIGN KEY (`professional_id` ) REFERENCES `Professionals`(`professional_id` ), FOREIGN KEY (`dog_id` ) REFERENCES `Dogs`(`dog_id` ) );

CREATE TABLE Breeds (breed_code VARCHAR(10), breed_name VARCHAR(80)); CREATE TABLE Charges (charge_id INTEGER, charge_type VARCHAR(10), charge_amount DECIMAL(19,4)); CREATE TABLE Sizes (size_code VARCHAR(10), size_description VARCHAR(80)); CREATE TABLE Treatment_Types (treatment_type_code VARCHAR(10), treatment_type_description VARCHAR(80)); CREATE TABLE Owners (owner_id INTEGER, first_name VARCHAR(50), last_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Dogs (dog_id INTEGER, owner_id INTEGER, abandoned_yn VARCHAR(1), breed_code VARCHAR(10), size_code VARCHAR(10), name VARCHAR(50), age VARCHAR(20), date_of_birth DATETIME, gender VARCHAR(1), weight VARCHAR(20), date_arrived DATETIME, date_adopted DATETIME, date_departed DATETIME); CREATE TABLE Professionals (professional_id INTEGER, role_code VARCHAR(10), first_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), last_name VARCHAR(50), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Treatments (treatment_id INTEGER, dog_id INTEGER, professional_id INTEGER, treatment_type_code VARCHAR(10), date_of_treatment DATETIME, cost_of_treatment DECIMAL(19,4));

extra

dog_kennels

SELECT count(*) FROM Professionals WHERE professional_id NOT IN ( SELECT professional_id FROM Treatments )

Find the number of professionals who have not treated any dogs.

CREATE TABLE `Breeds` ( `breed_code` VARCHAR(10) PRIMARY KEY , `breed_name` VARCHAR(80) ); CREATE TABLE `Charges` ( `charge_id` INTEGER PRIMARY KEY , `charge_type` VARCHAR(10), `charge_amount` DECIMAL(19,4) ); CREATE TABLE `Sizes` ( `size_code` VARCHAR(10) PRIMARY KEY , `size_description` VARCHAR(80) ); CREATE TABLE `Treatment_Types` ( `treatment_type_code` VARCHAR(10) PRIMARY KEY , `treatment_type_description` VARCHAR(80) ); CREATE TABLE `Owners` ( `owner_id` INTEGER PRIMARY KEY , `first_name` VARCHAR(50), `last_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Dogs` ( `dog_id` INTEGER PRIMARY KEY , `owner_id` INTEGER NOT NULL, `abandoned_yn` VARCHAR(1), `breed_code` VARCHAR(10) NOT NULL, `size_code` VARCHAR(10) NOT NULL, `name` VARCHAR(50), `age` VARCHAR(20), `date_of_birth` DATETIME, `gender` VARCHAR(1), `weight` VARCHAR(20), `date_arrived` DATETIME, `date_adopted` DATETIME, `date_departed` DATETIME, FOREIGN KEY (`breed_code` ) REFERENCES `Breeds`(`breed_code` ), FOREIGN KEY (`size_code` ) REFERENCES `Sizes`(`size_code` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ) ); CREATE TABLE `Professionals` ( `professional_id` INTEGER PRIMARY KEY , `role_code` VARCHAR(10) NOT NULL, `first_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `last_name` VARCHAR(50), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Treatments` ( `treatment_id` INTEGER PRIMARY KEY , `dog_id` INTEGER NOT NULL, `professional_id` INTEGER NOT NULL, `treatment_type_code` VARCHAR(10) NOT NULL, `date_of_treatment` DATETIME, `cost_of_treatment` DECIMAL(19,4), FOREIGN KEY (`treatment_type_code` ) REFERENCES `Treatment_Types`(`treatment_type_code` ), FOREIGN KEY (`professional_id` ) REFERENCES `Professionals`(`professional_id` ), FOREIGN KEY (`dog_id` ) REFERENCES `Dogs`(`dog_id` ) );

CREATE TABLE Breeds (breed_code VARCHAR(10), breed_name VARCHAR(80)); CREATE TABLE Charges (charge_id INTEGER, charge_type VARCHAR(10), charge_amount DECIMAL(19,4)); CREATE TABLE Sizes (size_code VARCHAR(10), size_description VARCHAR(80)); CREATE TABLE Treatment_Types (treatment_type_code VARCHAR(10), treatment_type_description VARCHAR(80)); CREATE TABLE Owners (owner_id INTEGER, first_name VARCHAR(50), last_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Dogs (dog_id INTEGER, owner_id INTEGER, abandoned_yn VARCHAR(1), breed_code VARCHAR(10), size_code VARCHAR(10), name VARCHAR(50), age VARCHAR(20), date_of_birth DATETIME, gender VARCHAR(1), weight VARCHAR(20), date_arrived DATETIME, date_adopted DATETIME, date_departed DATETIME); CREATE TABLE Professionals (professional_id INTEGER, role_code VARCHAR(10), first_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), last_name VARCHAR(50), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Treatments (treatment_id INTEGER, dog_id INTEGER, professional_id INTEGER, treatment_type_code VARCHAR(10), date_of_treatment DATETIME, cost_of_treatment DECIMAL(19,4));

extra

dog_kennels

SELECT name , age , weight FROM Dogs WHERE abandoned_yn = 1

List the dog name, age and weight of the dogs who have been abandoned? 1 stands for yes, and 0 stands for no.

CREATE TABLE `Breeds` ( `breed_code` VARCHAR(10) PRIMARY KEY , `breed_name` VARCHAR(80) ); CREATE TABLE `Charges` ( `charge_id` INTEGER PRIMARY KEY , `charge_type` VARCHAR(10), `charge_amount` DECIMAL(19,4) ); CREATE TABLE `Sizes` ( `size_code` VARCHAR(10) PRIMARY KEY , `size_description` VARCHAR(80) ); CREATE TABLE `Treatment_Types` ( `treatment_type_code` VARCHAR(10) PRIMARY KEY , `treatment_type_description` VARCHAR(80) ); CREATE TABLE `Owners` ( `owner_id` INTEGER PRIMARY KEY , `first_name` VARCHAR(50), `last_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Dogs` ( `dog_id` INTEGER PRIMARY KEY , `owner_id` INTEGER NOT NULL, `abandoned_yn` VARCHAR(1), `breed_code` VARCHAR(10) NOT NULL, `size_code` VARCHAR(10) NOT NULL, `name` VARCHAR(50), `age` VARCHAR(20), `date_of_birth` DATETIME, `gender` VARCHAR(1), `weight` VARCHAR(20), `date_arrived` DATETIME, `date_adopted` DATETIME, `date_departed` DATETIME, FOREIGN KEY (`breed_code` ) REFERENCES `Breeds`(`breed_code` ), FOREIGN KEY (`size_code` ) REFERENCES `Sizes`(`size_code` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ) ); CREATE TABLE `Professionals` ( `professional_id` INTEGER PRIMARY KEY , `role_code` VARCHAR(10) NOT NULL, `first_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `last_name` VARCHAR(50), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Treatments` ( `treatment_id` INTEGER PRIMARY KEY , `dog_id` INTEGER NOT NULL, `professional_id` INTEGER NOT NULL, `treatment_type_code` VARCHAR(10) NOT NULL, `date_of_treatment` DATETIME, `cost_of_treatment` DECIMAL(19,4), FOREIGN KEY (`treatment_type_code` ) REFERENCES `Treatment_Types`(`treatment_type_code` ), FOREIGN KEY (`professional_id` ) REFERENCES `Professionals`(`professional_id` ), FOREIGN KEY (`dog_id` ) REFERENCES `Dogs`(`dog_id` ) );

CREATE TABLE Breeds (breed_code VARCHAR(10), breed_name VARCHAR(80)); CREATE TABLE Charges (charge_id INTEGER, charge_type VARCHAR(10), charge_amount DECIMAL(19,4)); CREATE TABLE Sizes (size_code VARCHAR(10), size_description VARCHAR(80)); CREATE TABLE Treatment_Types (treatment_type_code VARCHAR(10), treatment_type_description VARCHAR(80)); CREATE TABLE Owners (owner_id INTEGER, first_name VARCHAR(50), last_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Dogs (dog_id INTEGER, owner_id INTEGER, abandoned_yn VARCHAR(1), breed_code VARCHAR(10), size_code VARCHAR(10), name VARCHAR(50), age VARCHAR(20), date_of_birth DATETIME, gender VARCHAR(1), weight VARCHAR(20), date_arrived DATETIME, date_adopted DATETIME, date_departed DATETIME); CREATE TABLE Professionals (professional_id INTEGER, role_code VARCHAR(10), first_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), last_name VARCHAR(50), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Treatments (treatment_id INTEGER, dog_id INTEGER, professional_id INTEGER, treatment_type_code VARCHAR(10), date_of_treatment DATETIME, cost_of_treatment DECIMAL(19,4));

medium

dog_kennels

SELECT name , age , weight FROM Dogs WHERE abandoned_yn = 1

What are the dog name, age and weight of the dogs that were abandoned? Note that 1 stands for yes, and 0 stands for no in the tables.

CREATE TABLE `Breeds` ( `breed_code` VARCHAR(10) PRIMARY KEY , `breed_name` VARCHAR(80) ); CREATE TABLE `Charges` ( `charge_id` INTEGER PRIMARY KEY , `charge_type` VARCHAR(10), `charge_amount` DECIMAL(19,4) ); CREATE TABLE `Sizes` ( `size_code` VARCHAR(10) PRIMARY KEY , `size_description` VARCHAR(80) ); CREATE TABLE `Treatment_Types` ( `treatment_type_code` VARCHAR(10) PRIMARY KEY , `treatment_type_description` VARCHAR(80) ); CREATE TABLE `Owners` ( `owner_id` INTEGER PRIMARY KEY , `first_name` VARCHAR(50), `last_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Dogs` ( `dog_id` INTEGER PRIMARY KEY , `owner_id` INTEGER NOT NULL, `abandoned_yn` VARCHAR(1), `breed_code` VARCHAR(10) NOT NULL, `size_code` VARCHAR(10) NOT NULL, `name` VARCHAR(50), `age` VARCHAR(20), `date_of_birth` DATETIME, `gender` VARCHAR(1), `weight` VARCHAR(20), `date_arrived` DATETIME, `date_adopted` DATETIME, `date_departed` DATETIME, FOREIGN KEY (`breed_code` ) REFERENCES `Breeds`(`breed_code` ), FOREIGN KEY (`size_code` ) REFERENCES `Sizes`(`size_code` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ) ); CREATE TABLE `Professionals` ( `professional_id` INTEGER PRIMARY KEY , `role_code` VARCHAR(10) NOT NULL, `first_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `last_name` VARCHAR(50), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Treatments` ( `treatment_id` INTEGER PRIMARY KEY , `dog_id` INTEGER NOT NULL, `professional_id` INTEGER NOT NULL, `treatment_type_code` VARCHAR(10) NOT NULL, `date_of_treatment` DATETIME, `cost_of_treatment` DECIMAL(19,4), FOREIGN KEY (`treatment_type_code` ) REFERENCES `Treatment_Types`(`treatment_type_code` ), FOREIGN KEY (`professional_id` ) REFERENCES `Professionals`(`professional_id` ), FOREIGN KEY (`dog_id` ) REFERENCES `Dogs`(`dog_id` ) );

CREATE TABLE Breeds (breed_code VARCHAR(10), breed_name VARCHAR(80)); CREATE TABLE Charges (charge_id INTEGER, charge_type VARCHAR(10), charge_amount DECIMAL(19,4)); CREATE TABLE Sizes (size_code VARCHAR(10), size_description VARCHAR(80)); CREATE TABLE Treatment_Types (treatment_type_code VARCHAR(10), treatment_type_description VARCHAR(80)); CREATE TABLE Owners (owner_id INTEGER, first_name VARCHAR(50), last_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Dogs (dog_id INTEGER, owner_id INTEGER, abandoned_yn VARCHAR(1), breed_code VARCHAR(10), size_code VARCHAR(10), name VARCHAR(50), age VARCHAR(20), date_of_birth DATETIME, gender VARCHAR(1), weight VARCHAR(20), date_arrived DATETIME, date_adopted DATETIME, date_departed DATETIME); CREATE TABLE Professionals (professional_id INTEGER, role_code VARCHAR(10), first_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), last_name VARCHAR(50), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Treatments (treatment_id INTEGER, dog_id INTEGER, professional_id INTEGER, treatment_type_code VARCHAR(10), date_of_treatment DATETIME, cost_of_treatment DECIMAL(19,4));

medium

dog_kennels

SELECT avg(age) FROM Dogs

What is the average age of all the dogs?

CREATE TABLE `Breeds` ( `breed_code` VARCHAR(10) PRIMARY KEY , `breed_name` VARCHAR(80) ); CREATE TABLE `Charges` ( `charge_id` INTEGER PRIMARY KEY , `charge_type` VARCHAR(10), `charge_amount` DECIMAL(19,4) ); CREATE TABLE `Sizes` ( `size_code` VARCHAR(10) PRIMARY KEY , `size_description` VARCHAR(80) ); CREATE TABLE `Treatment_Types` ( `treatment_type_code` VARCHAR(10) PRIMARY KEY , `treatment_type_description` VARCHAR(80) ); CREATE TABLE `Owners` ( `owner_id` INTEGER PRIMARY KEY , `first_name` VARCHAR(50), `last_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Dogs` ( `dog_id` INTEGER PRIMARY KEY , `owner_id` INTEGER NOT NULL, `abandoned_yn` VARCHAR(1), `breed_code` VARCHAR(10) NOT NULL, `size_code` VARCHAR(10) NOT NULL, `name` VARCHAR(50), `age` VARCHAR(20), `date_of_birth` DATETIME, `gender` VARCHAR(1), `weight` VARCHAR(20), `date_arrived` DATETIME, `date_adopted` DATETIME, `date_departed` DATETIME, FOREIGN KEY (`breed_code` ) REFERENCES `Breeds`(`breed_code` ), FOREIGN KEY (`size_code` ) REFERENCES `Sizes`(`size_code` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ) ); CREATE TABLE `Professionals` ( `professional_id` INTEGER PRIMARY KEY , `role_code` VARCHAR(10) NOT NULL, `first_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `last_name` VARCHAR(50), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Treatments` ( `treatment_id` INTEGER PRIMARY KEY , `dog_id` INTEGER NOT NULL, `professional_id` INTEGER NOT NULL, `treatment_type_code` VARCHAR(10) NOT NULL, `date_of_treatment` DATETIME, `cost_of_treatment` DECIMAL(19,4), FOREIGN KEY (`treatment_type_code` ) REFERENCES `Treatment_Types`(`treatment_type_code` ), FOREIGN KEY (`professional_id` ) REFERENCES `Professionals`(`professional_id` ), FOREIGN KEY (`dog_id` ) REFERENCES `Dogs`(`dog_id` ) );

CREATE TABLE Breeds (breed_code VARCHAR(10), breed_name VARCHAR(80)); CREATE TABLE Charges (charge_id INTEGER, charge_type VARCHAR(10), charge_amount DECIMAL(19,4)); CREATE TABLE Sizes (size_code VARCHAR(10), size_description VARCHAR(80)); CREATE TABLE Treatment_Types (treatment_type_code VARCHAR(10), treatment_type_description VARCHAR(80)); CREATE TABLE Owners (owner_id INTEGER, first_name VARCHAR(50), last_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Dogs (dog_id INTEGER, owner_id INTEGER, abandoned_yn VARCHAR(1), breed_code VARCHAR(10), size_code VARCHAR(10), name VARCHAR(50), age VARCHAR(20), date_of_birth DATETIME, gender VARCHAR(1), weight VARCHAR(20), date_arrived DATETIME, date_adopted DATETIME, date_departed DATETIME); CREATE TABLE Professionals (professional_id INTEGER, role_code VARCHAR(10), first_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), last_name VARCHAR(50), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Treatments (treatment_id INTEGER, dog_id INTEGER, professional_id INTEGER, treatment_type_code VARCHAR(10), date_of_treatment DATETIME, cost_of_treatment DECIMAL(19,4));

easy

dog_kennels

SELECT avg(age) FROM Dogs

Compute the average age of all the dogs.

CREATE TABLE `Breeds` ( `breed_code` VARCHAR(10) PRIMARY KEY , `breed_name` VARCHAR(80) ); CREATE TABLE `Charges` ( `charge_id` INTEGER PRIMARY KEY , `charge_type` VARCHAR(10), `charge_amount` DECIMAL(19,4) ); CREATE TABLE `Sizes` ( `size_code` VARCHAR(10) PRIMARY KEY , `size_description` VARCHAR(80) ); CREATE TABLE `Treatment_Types` ( `treatment_type_code` VARCHAR(10) PRIMARY KEY , `treatment_type_description` VARCHAR(80) ); CREATE TABLE `Owners` ( `owner_id` INTEGER PRIMARY KEY , `first_name` VARCHAR(50), `last_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Dogs` ( `dog_id` INTEGER PRIMARY KEY , `owner_id` INTEGER NOT NULL, `abandoned_yn` VARCHAR(1), `breed_code` VARCHAR(10) NOT NULL, `size_code` VARCHAR(10) NOT NULL, `name` VARCHAR(50), `age` VARCHAR(20), `date_of_birth` DATETIME, `gender` VARCHAR(1), `weight` VARCHAR(20), `date_arrived` DATETIME, `date_adopted` DATETIME, `date_departed` DATETIME, FOREIGN KEY (`breed_code` ) REFERENCES `Breeds`(`breed_code` ), FOREIGN KEY (`size_code` ) REFERENCES `Sizes`(`size_code` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ) ); CREATE TABLE `Professionals` ( `professional_id` INTEGER PRIMARY KEY , `role_code` VARCHAR(10) NOT NULL, `first_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `last_name` VARCHAR(50), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Treatments` ( `treatment_id` INTEGER PRIMARY KEY , `dog_id` INTEGER NOT NULL, `professional_id` INTEGER NOT NULL, `treatment_type_code` VARCHAR(10) NOT NULL, `date_of_treatment` DATETIME, `cost_of_treatment` DECIMAL(19,4), FOREIGN KEY (`treatment_type_code` ) REFERENCES `Treatment_Types`(`treatment_type_code` ), FOREIGN KEY (`professional_id` ) REFERENCES `Professionals`(`professional_id` ), FOREIGN KEY (`dog_id` ) REFERENCES `Dogs`(`dog_id` ) );

CREATE TABLE Breeds (breed_code VARCHAR(10), breed_name VARCHAR(80)); CREATE TABLE Charges (charge_id INTEGER, charge_type VARCHAR(10), charge_amount DECIMAL(19,4)); CREATE TABLE Sizes (size_code VARCHAR(10), size_description VARCHAR(80)); CREATE TABLE Treatment_Types (treatment_type_code VARCHAR(10), treatment_type_description VARCHAR(80)); CREATE TABLE Owners (owner_id INTEGER, first_name VARCHAR(50), last_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Dogs (dog_id INTEGER, owner_id INTEGER, abandoned_yn VARCHAR(1), breed_code VARCHAR(10), size_code VARCHAR(10), name VARCHAR(50), age VARCHAR(20), date_of_birth DATETIME, gender VARCHAR(1), weight VARCHAR(20), date_arrived DATETIME, date_adopted DATETIME, date_departed DATETIME); CREATE TABLE Professionals (professional_id INTEGER, role_code VARCHAR(10), first_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), last_name VARCHAR(50), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Treatments (treatment_id INTEGER, dog_id INTEGER, professional_id INTEGER, treatment_type_code VARCHAR(10), date_of_treatment DATETIME, cost_of_treatment DECIMAL(19,4));

easy

dog_kennels

SELECT max(age) FROM Dogs

What is the age of the oldest dog?

CREATE TABLE `Breeds` ( `breed_code` VARCHAR(10) PRIMARY KEY , `breed_name` VARCHAR(80) ); CREATE TABLE `Charges` ( `charge_id` INTEGER PRIMARY KEY , `charge_type` VARCHAR(10), `charge_amount` DECIMAL(19,4) ); CREATE TABLE `Sizes` ( `size_code` VARCHAR(10) PRIMARY KEY , `size_description` VARCHAR(80) ); CREATE TABLE `Treatment_Types` ( `treatment_type_code` VARCHAR(10) PRIMARY KEY , `treatment_type_description` VARCHAR(80) ); CREATE TABLE `Owners` ( `owner_id` INTEGER PRIMARY KEY , `first_name` VARCHAR(50), `last_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Dogs` ( `dog_id` INTEGER PRIMARY KEY , `owner_id` INTEGER NOT NULL, `abandoned_yn` VARCHAR(1), `breed_code` VARCHAR(10) NOT NULL, `size_code` VARCHAR(10) NOT NULL, `name` VARCHAR(50), `age` VARCHAR(20), `date_of_birth` DATETIME, `gender` VARCHAR(1), `weight` VARCHAR(20), `date_arrived` DATETIME, `date_adopted` DATETIME, `date_departed` DATETIME, FOREIGN KEY (`breed_code` ) REFERENCES `Breeds`(`breed_code` ), FOREIGN KEY (`size_code` ) REFERENCES `Sizes`(`size_code` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ) ); CREATE TABLE `Professionals` ( `professional_id` INTEGER PRIMARY KEY , `role_code` VARCHAR(10) NOT NULL, `first_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `last_name` VARCHAR(50), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Treatments` ( `treatment_id` INTEGER PRIMARY KEY , `dog_id` INTEGER NOT NULL, `professional_id` INTEGER NOT NULL, `treatment_type_code` VARCHAR(10) NOT NULL, `date_of_treatment` DATETIME, `cost_of_treatment` DECIMAL(19,4), FOREIGN KEY (`treatment_type_code` ) REFERENCES `Treatment_Types`(`treatment_type_code` ), FOREIGN KEY (`professional_id` ) REFERENCES `Professionals`(`professional_id` ), FOREIGN KEY (`dog_id` ) REFERENCES `Dogs`(`dog_id` ) );

CREATE TABLE Breeds (breed_code VARCHAR(10), breed_name VARCHAR(80)); CREATE TABLE Charges (charge_id INTEGER, charge_type VARCHAR(10), charge_amount DECIMAL(19,4)); CREATE TABLE Sizes (size_code VARCHAR(10), size_description VARCHAR(80)); CREATE TABLE Treatment_Types (treatment_type_code VARCHAR(10), treatment_type_description VARCHAR(80)); CREATE TABLE Owners (owner_id INTEGER, first_name VARCHAR(50), last_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Dogs (dog_id INTEGER, owner_id INTEGER, abandoned_yn VARCHAR(1), breed_code VARCHAR(10), size_code VARCHAR(10), name VARCHAR(50), age VARCHAR(20), date_of_birth DATETIME, gender VARCHAR(1), weight VARCHAR(20), date_arrived DATETIME, date_adopted DATETIME, date_departed DATETIME); CREATE TABLE Professionals (professional_id INTEGER, role_code VARCHAR(10), first_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), last_name VARCHAR(50), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Treatments (treatment_id INTEGER, dog_id INTEGER, professional_id INTEGER, treatment_type_code VARCHAR(10), date_of_treatment DATETIME, cost_of_treatment DECIMAL(19,4));

easy

dog_kennels

SELECT max(age) FROM Dogs

Tell me the age of the oldest dog.

CREATE TABLE `Breeds` ( `breed_code` VARCHAR(10) PRIMARY KEY , `breed_name` VARCHAR(80) ); CREATE TABLE `Charges` ( `charge_id` INTEGER PRIMARY KEY , `charge_type` VARCHAR(10), `charge_amount` DECIMAL(19,4) ); CREATE TABLE `Sizes` ( `size_code` VARCHAR(10) PRIMARY KEY , `size_description` VARCHAR(80) ); CREATE TABLE `Treatment_Types` ( `treatment_type_code` VARCHAR(10) PRIMARY KEY , `treatment_type_description` VARCHAR(80) ); CREATE TABLE `Owners` ( `owner_id` INTEGER PRIMARY KEY , `first_name` VARCHAR(50), `last_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Dogs` ( `dog_id` INTEGER PRIMARY KEY , `owner_id` INTEGER NOT NULL, `abandoned_yn` VARCHAR(1), `breed_code` VARCHAR(10) NOT NULL, `size_code` VARCHAR(10) NOT NULL, `name` VARCHAR(50), `age` VARCHAR(20), `date_of_birth` DATETIME, `gender` VARCHAR(1), `weight` VARCHAR(20), `date_arrived` DATETIME, `date_adopted` DATETIME, `date_departed` DATETIME, FOREIGN KEY (`breed_code` ) REFERENCES `Breeds`(`breed_code` ), FOREIGN KEY (`size_code` ) REFERENCES `Sizes`(`size_code` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ) ); CREATE TABLE `Professionals` ( `professional_id` INTEGER PRIMARY KEY , `role_code` VARCHAR(10) NOT NULL, `first_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `last_name` VARCHAR(50), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Treatments` ( `treatment_id` INTEGER PRIMARY KEY , `dog_id` INTEGER NOT NULL, `professional_id` INTEGER NOT NULL, `treatment_type_code` VARCHAR(10) NOT NULL, `date_of_treatment` DATETIME, `cost_of_treatment` DECIMAL(19,4), FOREIGN KEY (`treatment_type_code` ) REFERENCES `Treatment_Types`(`treatment_type_code` ), FOREIGN KEY (`professional_id` ) REFERENCES `Professionals`(`professional_id` ), FOREIGN KEY (`dog_id` ) REFERENCES `Dogs`(`dog_id` ) );

CREATE TABLE Breeds (breed_code VARCHAR(10), breed_name VARCHAR(80)); CREATE TABLE Charges (charge_id INTEGER, charge_type VARCHAR(10), charge_amount DECIMAL(19,4)); CREATE TABLE Sizes (size_code VARCHAR(10), size_description VARCHAR(80)); CREATE TABLE Treatment_Types (treatment_type_code VARCHAR(10), treatment_type_description VARCHAR(80)); CREATE TABLE Owners (owner_id INTEGER, first_name VARCHAR(50), last_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Dogs (dog_id INTEGER, owner_id INTEGER, abandoned_yn VARCHAR(1), breed_code VARCHAR(10), size_code VARCHAR(10), name VARCHAR(50), age VARCHAR(20), date_of_birth DATETIME, gender VARCHAR(1), weight VARCHAR(20), date_arrived DATETIME, date_adopted DATETIME, date_departed DATETIME); CREATE TABLE Professionals (professional_id INTEGER, role_code VARCHAR(10), first_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), last_name VARCHAR(50), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Treatments (treatment_id INTEGER, dog_id INTEGER, professional_id INTEGER, treatment_type_code VARCHAR(10), date_of_treatment DATETIME, cost_of_treatment DECIMAL(19,4));

easy

dog_kennels

SELECT charge_type , charge_amount FROM Charges

How much does each charge type costs? List both charge type and amount.

CREATE TABLE `Breeds` ( `breed_code` VARCHAR(10) PRIMARY KEY , `breed_name` VARCHAR(80) ); CREATE TABLE `Charges` ( `charge_id` INTEGER PRIMARY KEY , `charge_type` VARCHAR(10), `charge_amount` DECIMAL(19,4) ); CREATE TABLE `Sizes` ( `size_code` VARCHAR(10) PRIMARY KEY , `size_description` VARCHAR(80) ); CREATE TABLE `Treatment_Types` ( `treatment_type_code` VARCHAR(10) PRIMARY KEY , `treatment_type_description` VARCHAR(80) ); CREATE TABLE `Owners` ( `owner_id` INTEGER PRIMARY KEY , `first_name` VARCHAR(50), `last_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Dogs` ( `dog_id` INTEGER PRIMARY KEY , `owner_id` INTEGER NOT NULL, `abandoned_yn` VARCHAR(1), `breed_code` VARCHAR(10) NOT NULL, `size_code` VARCHAR(10) NOT NULL, `name` VARCHAR(50), `age` VARCHAR(20), `date_of_birth` DATETIME, `gender` VARCHAR(1), `weight` VARCHAR(20), `date_arrived` DATETIME, `date_adopted` DATETIME, `date_departed` DATETIME, FOREIGN KEY (`breed_code` ) REFERENCES `Breeds`(`breed_code` ), FOREIGN KEY (`size_code` ) REFERENCES `Sizes`(`size_code` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ) ); CREATE TABLE `Professionals` ( `professional_id` INTEGER PRIMARY KEY , `role_code` VARCHAR(10) NOT NULL, `first_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `last_name` VARCHAR(50), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Treatments` ( `treatment_id` INTEGER PRIMARY KEY , `dog_id` INTEGER NOT NULL, `professional_id` INTEGER NOT NULL, `treatment_type_code` VARCHAR(10) NOT NULL, `date_of_treatment` DATETIME, `cost_of_treatment` DECIMAL(19,4), FOREIGN KEY (`treatment_type_code` ) REFERENCES `Treatment_Types`(`treatment_type_code` ), FOREIGN KEY (`professional_id` ) REFERENCES `Professionals`(`professional_id` ), FOREIGN KEY (`dog_id` ) REFERENCES `Dogs`(`dog_id` ) );

CREATE TABLE Breeds (breed_code VARCHAR(10), breed_name VARCHAR(80)); CREATE TABLE Charges (charge_id INTEGER, charge_type VARCHAR(10), charge_amount DECIMAL(19,4)); CREATE TABLE Sizes (size_code VARCHAR(10), size_description VARCHAR(80)); CREATE TABLE Treatment_Types (treatment_type_code VARCHAR(10), treatment_type_description VARCHAR(80)); CREATE TABLE Owners (owner_id INTEGER, first_name VARCHAR(50), last_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Dogs (dog_id INTEGER, owner_id INTEGER, abandoned_yn VARCHAR(1), breed_code VARCHAR(10), size_code VARCHAR(10), name VARCHAR(50), age VARCHAR(20), date_of_birth DATETIME, gender VARCHAR(1), weight VARCHAR(20), date_arrived DATETIME, date_adopted DATETIME, date_departed DATETIME); CREATE TABLE Professionals (professional_id INTEGER, role_code VARCHAR(10), first_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), last_name VARCHAR(50), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Treatments (treatment_id INTEGER, dog_id INTEGER, professional_id INTEGER, treatment_type_code VARCHAR(10), date_of_treatment DATETIME, cost_of_treatment DECIMAL(19,4));

medium

dog_kennels

SELECT charge_type , charge_amount FROM Charges

List each charge type and its amount.

CREATE TABLE `Breeds` ( `breed_code` VARCHAR(10) PRIMARY KEY , `breed_name` VARCHAR(80) ); CREATE TABLE `Charges` ( `charge_id` INTEGER PRIMARY KEY , `charge_type` VARCHAR(10), `charge_amount` DECIMAL(19,4) ); CREATE TABLE `Sizes` ( `size_code` VARCHAR(10) PRIMARY KEY , `size_description` VARCHAR(80) ); CREATE TABLE `Treatment_Types` ( `treatment_type_code` VARCHAR(10) PRIMARY KEY , `treatment_type_description` VARCHAR(80) ); CREATE TABLE `Owners` ( `owner_id` INTEGER PRIMARY KEY , `first_name` VARCHAR(50), `last_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Dogs` ( `dog_id` INTEGER PRIMARY KEY , `owner_id` INTEGER NOT NULL, `abandoned_yn` VARCHAR(1), `breed_code` VARCHAR(10) NOT NULL, `size_code` VARCHAR(10) NOT NULL, `name` VARCHAR(50), `age` VARCHAR(20), `date_of_birth` DATETIME, `gender` VARCHAR(1), `weight` VARCHAR(20), `date_arrived` DATETIME, `date_adopted` DATETIME, `date_departed` DATETIME, FOREIGN KEY (`breed_code` ) REFERENCES `Breeds`(`breed_code` ), FOREIGN KEY (`size_code` ) REFERENCES `Sizes`(`size_code` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ) ); CREATE TABLE `Professionals` ( `professional_id` INTEGER PRIMARY KEY , `role_code` VARCHAR(10) NOT NULL, `first_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `last_name` VARCHAR(50), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Treatments` ( `treatment_id` INTEGER PRIMARY KEY , `dog_id` INTEGER NOT NULL, `professional_id` INTEGER NOT NULL, `treatment_type_code` VARCHAR(10) NOT NULL, `date_of_treatment` DATETIME, `cost_of_treatment` DECIMAL(19,4), FOREIGN KEY (`treatment_type_code` ) REFERENCES `Treatment_Types`(`treatment_type_code` ), FOREIGN KEY (`professional_id` ) REFERENCES `Professionals`(`professional_id` ), FOREIGN KEY (`dog_id` ) REFERENCES `Dogs`(`dog_id` ) );

CREATE TABLE Breeds (breed_code VARCHAR(10), breed_name VARCHAR(80)); CREATE TABLE Charges (charge_id INTEGER, charge_type VARCHAR(10), charge_amount DECIMAL(19,4)); CREATE TABLE Sizes (size_code VARCHAR(10), size_description VARCHAR(80)); CREATE TABLE Treatment_Types (treatment_type_code VARCHAR(10), treatment_type_description VARCHAR(80)); CREATE TABLE Owners (owner_id INTEGER, first_name VARCHAR(50), last_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Dogs (dog_id INTEGER, owner_id INTEGER, abandoned_yn VARCHAR(1), breed_code VARCHAR(10), size_code VARCHAR(10), name VARCHAR(50), age VARCHAR(20), date_of_birth DATETIME, gender VARCHAR(1), weight VARCHAR(20), date_arrived DATETIME, date_adopted DATETIME, date_departed DATETIME); CREATE TABLE Professionals (professional_id INTEGER, role_code VARCHAR(10), first_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), last_name VARCHAR(50), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Treatments (treatment_id INTEGER, dog_id INTEGER, professional_id INTEGER, treatment_type_code VARCHAR(10), date_of_treatment DATETIME, cost_of_treatment DECIMAL(19,4));

medium

dog_kennels

SELECT max(charge_amount) FROM Charges

How much does the most expensive charge type costs?

CREATE TABLE `Breeds` ( `breed_code` VARCHAR(10) PRIMARY KEY , `breed_name` VARCHAR(80) ); CREATE TABLE `Charges` ( `charge_id` INTEGER PRIMARY KEY , `charge_type` VARCHAR(10), `charge_amount` DECIMAL(19,4) ); CREATE TABLE `Sizes` ( `size_code` VARCHAR(10) PRIMARY KEY , `size_description` VARCHAR(80) ); CREATE TABLE `Treatment_Types` ( `treatment_type_code` VARCHAR(10) PRIMARY KEY , `treatment_type_description` VARCHAR(80) ); CREATE TABLE `Owners` ( `owner_id` INTEGER PRIMARY KEY , `first_name` VARCHAR(50), `last_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Dogs` ( `dog_id` INTEGER PRIMARY KEY , `owner_id` INTEGER NOT NULL, `abandoned_yn` VARCHAR(1), `breed_code` VARCHAR(10) NOT NULL, `size_code` VARCHAR(10) NOT NULL, `name` VARCHAR(50), `age` VARCHAR(20), `date_of_birth` DATETIME, `gender` VARCHAR(1), `weight` VARCHAR(20), `date_arrived` DATETIME, `date_adopted` DATETIME, `date_departed` DATETIME, FOREIGN KEY (`breed_code` ) REFERENCES `Breeds`(`breed_code` ), FOREIGN KEY (`size_code` ) REFERENCES `Sizes`(`size_code` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ) ); CREATE TABLE `Professionals` ( `professional_id` INTEGER PRIMARY KEY , `role_code` VARCHAR(10) NOT NULL, `first_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `last_name` VARCHAR(50), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Treatments` ( `treatment_id` INTEGER PRIMARY KEY , `dog_id` INTEGER NOT NULL, `professional_id` INTEGER NOT NULL, `treatment_type_code` VARCHAR(10) NOT NULL, `date_of_treatment` DATETIME, `cost_of_treatment` DECIMAL(19,4), FOREIGN KEY (`treatment_type_code` ) REFERENCES `Treatment_Types`(`treatment_type_code` ), FOREIGN KEY (`professional_id` ) REFERENCES `Professionals`(`professional_id` ), FOREIGN KEY (`dog_id` ) REFERENCES `Dogs`(`dog_id` ) );

CREATE TABLE Breeds (breed_code VARCHAR(10), breed_name VARCHAR(80)); CREATE TABLE Charges (charge_id INTEGER, charge_type VARCHAR(10), charge_amount DECIMAL(19,4)); CREATE TABLE Sizes (size_code VARCHAR(10), size_description VARCHAR(80)); CREATE TABLE Treatment_Types (treatment_type_code VARCHAR(10), treatment_type_description VARCHAR(80)); CREATE TABLE Owners (owner_id INTEGER, first_name VARCHAR(50), last_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Dogs (dog_id INTEGER, owner_id INTEGER, abandoned_yn VARCHAR(1), breed_code VARCHAR(10), size_code VARCHAR(10), name VARCHAR(50), age VARCHAR(20), date_of_birth DATETIME, gender VARCHAR(1), weight VARCHAR(20), date_arrived DATETIME, date_adopted DATETIME, date_departed DATETIME); CREATE TABLE Professionals (professional_id INTEGER, role_code VARCHAR(10), first_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), last_name VARCHAR(50), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Treatments (treatment_id INTEGER, dog_id INTEGER, professional_id INTEGER, treatment_type_code VARCHAR(10), date_of_treatment DATETIME, cost_of_treatment DECIMAL(19,4));

easy

dog_kennels

SELECT max(charge_amount) FROM Charges

What is the charge amount of the most expensive charge type?

CREATE TABLE `Breeds` ( `breed_code` VARCHAR(10) PRIMARY KEY , `breed_name` VARCHAR(80) ); CREATE TABLE `Charges` ( `charge_id` INTEGER PRIMARY KEY , `charge_type` VARCHAR(10), `charge_amount` DECIMAL(19,4) ); CREATE TABLE `Sizes` ( `size_code` VARCHAR(10) PRIMARY KEY , `size_description` VARCHAR(80) ); CREATE TABLE `Treatment_Types` ( `treatment_type_code` VARCHAR(10) PRIMARY KEY , `treatment_type_description` VARCHAR(80) ); CREATE TABLE `Owners` ( `owner_id` INTEGER PRIMARY KEY , `first_name` VARCHAR(50), `last_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Dogs` ( `dog_id` INTEGER PRIMARY KEY , `owner_id` INTEGER NOT NULL, `abandoned_yn` VARCHAR(1), `breed_code` VARCHAR(10) NOT NULL, `size_code` VARCHAR(10) NOT NULL, `name` VARCHAR(50), `age` VARCHAR(20), `date_of_birth` DATETIME, `gender` VARCHAR(1), `weight` VARCHAR(20), `date_arrived` DATETIME, `date_adopted` DATETIME, `date_departed` DATETIME, FOREIGN KEY (`breed_code` ) REFERENCES `Breeds`(`breed_code` ), FOREIGN KEY (`size_code` ) REFERENCES `Sizes`(`size_code` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ) ); CREATE TABLE `Professionals` ( `professional_id` INTEGER PRIMARY KEY , `role_code` VARCHAR(10) NOT NULL, `first_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `last_name` VARCHAR(50), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Treatments` ( `treatment_id` INTEGER PRIMARY KEY , `dog_id` INTEGER NOT NULL, `professional_id` INTEGER NOT NULL, `treatment_type_code` VARCHAR(10) NOT NULL, `date_of_treatment` DATETIME, `cost_of_treatment` DECIMAL(19,4), FOREIGN KEY (`treatment_type_code` ) REFERENCES `Treatment_Types`(`treatment_type_code` ), FOREIGN KEY (`professional_id` ) REFERENCES `Professionals`(`professional_id` ), FOREIGN KEY (`dog_id` ) REFERENCES `Dogs`(`dog_id` ) );

CREATE TABLE Breeds (breed_code VARCHAR(10), breed_name VARCHAR(80)); CREATE TABLE Charges (charge_id INTEGER, charge_type VARCHAR(10), charge_amount DECIMAL(19,4)); CREATE TABLE Sizes (size_code VARCHAR(10), size_description VARCHAR(80)); CREATE TABLE Treatment_Types (treatment_type_code VARCHAR(10), treatment_type_description VARCHAR(80)); CREATE TABLE Owners (owner_id INTEGER, first_name VARCHAR(50), last_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Dogs (dog_id INTEGER, owner_id INTEGER, abandoned_yn VARCHAR(1), breed_code VARCHAR(10), size_code VARCHAR(10), name VARCHAR(50), age VARCHAR(20), date_of_birth DATETIME, gender VARCHAR(1), weight VARCHAR(20), date_arrived DATETIME, date_adopted DATETIME, date_departed DATETIME); CREATE TABLE Professionals (professional_id INTEGER, role_code VARCHAR(10), first_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), last_name VARCHAR(50), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Treatments (treatment_id INTEGER, dog_id INTEGER, professional_id INTEGER, treatment_type_code VARCHAR(10), date_of_treatment DATETIME, cost_of_treatment DECIMAL(19,4));

easy

dog_kennels

SELECT email_address , cell_number , home_phone FROM professionals

List the email, cell phone and home phone of all the professionals.

CREATE TABLE `Breeds` ( `breed_code` VARCHAR(10) PRIMARY KEY , `breed_name` VARCHAR(80) ); CREATE TABLE `Charges` ( `charge_id` INTEGER PRIMARY KEY , `charge_type` VARCHAR(10), `charge_amount` DECIMAL(19,4) ); CREATE TABLE `Sizes` ( `size_code` VARCHAR(10) PRIMARY KEY , `size_description` VARCHAR(80) ); CREATE TABLE `Treatment_Types` ( `treatment_type_code` VARCHAR(10) PRIMARY KEY , `treatment_type_description` VARCHAR(80) ); CREATE TABLE `Owners` ( `owner_id` INTEGER PRIMARY KEY , `first_name` VARCHAR(50), `last_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Dogs` ( `dog_id` INTEGER PRIMARY KEY , `owner_id` INTEGER NOT NULL, `abandoned_yn` VARCHAR(1), `breed_code` VARCHAR(10) NOT NULL, `size_code` VARCHAR(10) NOT NULL, `name` VARCHAR(50), `age` VARCHAR(20), `date_of_birth` DATETIME, `gender` VARCHAR(1), `weight` VARCHAR(20), `date_arrived` DATETIME, `date_adopted` DATETIME, `date_departed` DATETIME, FOREIGN KEY (`breed_code` ) REFERENCES `Breeds`(`breed_code` ), FOREIGN KEY (`size_code` ) REFERENCES `Sizes`(`size_code` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ) ); CREATE TABLE `Professionals` ( `professional_id` INTEGER PRIMARY KEY , `role_code` VARCHAR(10) NOT NULL, `first_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `last_name` VARCHAR(50), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Treatments` ( `treatment_id` INTEGER PRIMARY KEY , `dog_id` INTEGER NOT NULL, `professional_id` INTEGER NOT NULL, `treatment_type_code` VARCHAR(10) NOT NULL, `date_of_treatment` DATETIME, `cost_of_treatment` DECIMAL(19,4), FOREIGN KEY (`treatment_type_code` ) REFERENCES `Treatment_Types`(`treatment_type_code` ), FOREIGN KEY (`professional_id` ) REFERENCES `Professionals`(`professional_id` ), FOREIGN KEY (`dog_id` ) REFERENCES `Dogs`(`dog_id` ) );

CREATE TABLE Breeds (breed_code VARCHAR(10), breed_name VARCHAR(80)); CREATE TABLE Charges (charge_id INTEGER, charge_type VARCHAR(10), charge_amount DECIMAL(19,4)); CREATE TABLE Sizes (size_code VARCHAR(10), size_description VARCHAR(80)); CREATE TABLE Treatment_Types (treatment_type_code VARCHAR(10), treatment_type_description VARCHAR(80)); CREATE TABLE Owners (owner_id INTEGER, first_name VARCHAR(50), last_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Dogs (dog_id INTEGER, owner_id INTEGER, abandoned_yn VARCHAR(1), breed_code VARCHAR(10), size_code VARCHAR(10), name VARCHAR(50), age VARCHAR(20), date_of_birth DATETIME, gender VARCHAR(1), weight VARCHAR(20), date_arrived DATETIME, date_adopted DATETIME, date_departed DATETIME); CREATE TABLE Professionals (professional_id INTEGER, role_code VARCHAR(10), first_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), last_name VARCHAR(50), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Treatments (treatment_id INTEGER, dog_id INTEGER, professional_id INTEGER, treatment_type_code VARCHAR(10), date_of_treatment DATETIME, cost_of_treatment DECIMAL(19,4));

medium

dog_kennels

SELECT email_address , cell_number , home_phone FROM professionals

What are the email, cell phone and home phone of each professional?

CREATE TABLE `Breeds` ( `breed_code` VARCHAR(10) PRIMARY KEY , `breed_name` VARCHAR(80) ); CREATE TABLE `Charges` ( `charge_id` INTEGER PRIMARY KEY , `charge_type` VARCHAR(10), `charge_amount` DECIMAL(19,4) ); CREATE TABLE `Sizes` ( `size_code` VARCHAR(10) PRIMARY KEY , `size_description` VARCHAR(80) ); CREATE TABLE `Treatment_Types` ( `treatment_type_code` VARCHAR(10) PRIMARY KEY , `treatment_type_description` VARCHAR(80) ); CREATE TABLE `Owners` ( `owner_id` INTEGER PRIMARY KEY , `first_name` VARCHAR(50), `last_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Dogs` ( `dog_id` INTEGER PRIMARY KEY , `owner_id` INTEGER NOT NULL, `abandoned_yn` VARCHAR(1), `breed_code` VARCHAR(10) NOT NULL, `size_code` VARCHAR(10) NOT NULL, `name` VARCHAR(50), `age` VARCHAR(20), `date_of_birth` DATETIME, `gender` VARCHAR(1), `weight` VARCHAR(20), `date_arrived` DATETIME, `date_adopted` DATETIME, `date_departed` DATETIME, FOREIGN KEY (`breed_code` ) REFERENCES `Breeds`(`breed_code` ), FOREIGN KEY (`size_code` ) REFERENCES `Sizes`(`size_code` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ) ); CREATE TABLE `Professionals` ( `professional_id` INTEGER PRIMARY KEY , `role_code` VARCHAR(10) NOT NULL, `first_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `last_name` VARCHAR(50), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Treatments` ( `treatment_id` INTEGER PRIMARY KEY , `dog_id` INTEGER NOT NULL, `professional_id` INTEGER NOT NULL, `treatment_type_code` VARCHAR(10) NOT NULL, `date_of_treatment` DATETIME, `cost_of_treatment` DECIMAL(19,4), FOREIGN KEY (`treatment_type_code` ) REFERENCES `Treatment_Types`(`treatment_type_code` ), FOREIGN KEY (`professional_id` ) REFERENCES `Professionals`(`professional_id` ), FOREIGN KEY (`dog_id` ) REFERENCES `Dogs`(`dog_id` ) );

CREATE TABLE Breeds (breed_code VARCHAR(10), breed_name VARCHAR(80)); CREATE TABLE Charges (charge_id INTEGER, charge_type VARCHAR(10), charge_amount DECIMAL(19,4)); CREATE TABLE Sizes (size_code VARCHAR(10), size_description VARCHAR(80)); CREATE TABLE Treatment_Types (treatment_type_code VARCHAR(10), treatment_type_description VARCHAR(80)); CREATE TABLE Owners (owner_id INTEGER, first_name VARCHAR(50), last_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Dogs (dog_id INTEGER, owner_id INTEGER, abandoned_yn VARCHAR(1), breed_code VARCHAR(10), size_code VARCHAR(10), name VARCHAR(50), age VARCHAR(20), date_of_birth DATETIME, gender VARCHAR(1), weight VARCHAR(20), date_arrived DATETIME, date_adopted DATETIME, date_departed DATETIME); CREATE TABLE Professionals (professional_id INTEGER, role_code VARCHAR(10), first_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), last_name VARCHAR(50), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Treatments (treatment_id INTEGER, dog_id INTEGER, professional_id INTEGER, treatment_type_code VARCHAR(10), date_of_treatment DATETIME, cost_of_treatment DECIMAL(19,4));

medium

dog_kennels

SELECT DISTINCT breed_code , size_code FROM dogs

What are all the possible breed type and size type combinations?

CREATE TABLE `Breeds` ( `breed_code` VARCHAR(10) PRIMARY KEY , `breed_name` VARCHAR(80) ); CREATE TABLE `Charges` ( `charge_id` INTEGER PRIMARY KEY , `charge_type` VARCHAR(10), `charge_amount` DECIMAL(19,4) ); CREATE TABLE `Sizes` ( `size_code` VARCHAR(10) PRIMARY KEY , `size_description` VARCHAR(80) ); CREATE TABLE `Treatment_Types` ( `treatment_type_code` VARCHAR(10) PRIMARY KEY , `treatment_type_description` VARCHAR(80) ); CREATE TABLE `Owners` ( `owner_id` INTEGER PRIMARY KEY , `first_name` VARCHAR(50), `last_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Dogs` ( `dog_id` INTEGER PRIMARY KEY , `owner_id` INTEGER NOT NULL, `abandoned_yn` VARCHAR(1), `breed_code` VARCHAR(10) NOT NULL, `size_code` VARCHAR(10) NOT NULL, `name` VARCHAR(50), `age` VARCHAR(20), `date_of_birth` DATETIME, `gender` VARCHAR(1), `weight` VARCHAR(20), `date_arrived` DATETIME, `date_adopted` DATETIME, `date_departed` DATETIME, FOREIGN KEY (`breed_code` ) REFERENCES `Breeds`(`breed_code` ), FOREIGN KEY (`size_code` ) REFERENCES `Sizes`(`size_code` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ) ); CREATE TABLE `Professionals` ( `professional_id` INTEGER PRIMARY KEY , `role_code` VARCHAR(10) NOT NULL, `first_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `last_name` VARCHAR(50), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Treatments` ( `treatment_id` INTEGER PRIMARY KEY , `dog_id` INTEGER NOT NULL, `professional_id` INTEGER NOT NULL, `treatment_type_code` VARCHAR(10) NOT NULL, `date_of_treatment` DATETIME, `cost_of_treatment` DECIMAL(19,4), FOREIGN KEY (`treatment_type_code` ) REFERENCES `Treatment_Types`(`treatment_type_code` ), FOREIGN KEY (`professional_id` ) REFERENCES `Professionals`(`professional_id` ), FOREIGN KEY (`dog_id` ) REFERENCES `Dogs`(`dog_id` ) );

CREATE TABLE Breeds (breed_code VARCHAR(10), breed_name VARCHAR(80)); CREATE TABLE Charges (charge_id INTEGER, charge_type VARCHAR(10), charge_amount DECIMAL(19,4)); CREATE TABLE Sizes (size_code VARCHAR(10), size_description VARCHAR(80)); CREATE TABLE Treatment_Types (treatment_type_code VARCHAR(10), treatment_type_description VARCHAR(80)); CREATE TABLE Owners (owner_id INTEGER, first_name VARCHAR(50), last_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Dogs (dog_id INTEGER, owner_id INTEGER, abandoned_yn VARCHAR(1), breed_code VARCHAR(10), size_code VARCHAR(10), name VARCHAR(50), age VARCHAR(20), date_of_birth DATETIME, gender VARCHAR(1), weight VARCHAR(20), date_arrived DATETIME, date_adopted DATETIME, date_departed DATETIME); CREATE TABLE Professionals (professional_id INTEGER, role_code VARCHAR(10), first_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), last_name VARCHAR(50), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Treatments (treatment_id INTEGER, dog_id INTEGER, professional_id INTEGER, treatment_type_code VARCHAR(10), date_of_treatment DATETIME, cost_of_treatment DECIMAL(19,4));

medium

dog_kennels

SELECT DISTINCT breed_code , size_code FROM dogs

Find the distinct breed type and size type combinations for dogs.

CREATE TABLE `Breeds` ( `breed_code` VARCHAR(10) PRIMARY KEY , `breed_name` VARCHAR(80) ); CREATE TABLE `Charges` ( `charge_id` INTEGER PRIMARY KEY , `charge_type` VARCHAR(10), `charge_amount` DECIMAL(19,4) ); CREATE TABLE `Sizes` ( `size_code` VARCHAR(10) PRIMARY KEY , `size_description` VARCHAR(80) ); CREATE TABLE `Treatment_Types` ( `treatment_type_code` VARCHAR(10) PRIMARY KEY , `treatment_type_description` VARCHAR(80) ); CREATE TABLE `Owners` ( `owner_id` INTEGER PRIMARY KEY , `first_name` VARCHAR(50), `last_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Dogs` ( `dog_id` INTEGER PRIMARY KEY , `owner_id` INTEGER NOT NULL, `abandoned_yn` VARCHAR(1), `breed_code` VARCHAR(10) NOT NULL, `size_code` VARCHAR(10) NOT NULL, `name` VARCHAR(50), `age` VARCHAR(20), `date_of_birth` DATETIME, `gender` VARCHAR(1), `weight` VARCHAR(20), `date_arrived` DATETIME, `date_adopted` DATETIME, `date_departed` DATETIME, FOREIGN KEY (`breed_code` ) REFERENCES `Breeds`(`breed_code` ), FOREIGN KEY (`size_code` ) REFERENCES `Sizes`(`size_code` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ) ); CREATE TABLE `Professionals` ( `professional_id` INTEGER PRIMARY KEY , `role_code` VARCHAR(10) NOT NULL, `first_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `last_name` VARCHAR(50), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Treatments` ( `treatment_id` INTEGER PRIMARY KEY , `dog_id` INTEGER NOT NULL, `professional_id` INTEGER NOT NULL, `treatment_type_code` VARCHAR(10) NOT NULL, `date_of_treatment` DATETIME, `cost_of_treatment` DECIMAL(19,4), FOREIGN KEY (`treatment_type_code` ) REFERENCES `Treatment_Types`(`treatment_type_code` ), FOREIGN KEY (`professional_id` ) REFERENCES `Professionals`(`professional_id` ), FOREIGN KEY (`dog_id` ) REFERENCES `Dogs`(`dog_id` ) );

CREATE TABLE Breeds (breed_code VARCHAR(10), breed_name VARCHAR(80)); CREATE TABLE Charges (charge_id INTEGER, charge_type VARCHAR(10), charge_amount DECIMAL(19,4)); CREATE TABLE Sizes (size_code VARCHAR(10), size_description VARCHAR(80)); CREATE TABLE Treatment_Types (treatment_type_code VARCHAR(10), treatment_type_description VARCHAR(80)); CREATE TABLE Owners (owner_id INTEGER, first_name VARCHAR(50), last_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Dogs (dog_id INTEGER, owner_id INTEGER, abandoned_yn VARCHAR(1), breed_code VARCHAR(10), size_code VARCHAR(10), name VARCHAR(50), age VARCHAR(20), date_of_birth DATETIME, gender VARCHAR(1), weight VARCHAR(20), date_arrived DATETIME, date_adopted DATETIME, date_departed DATETIME); CREATE TABLE Professionals (professional_id INTEGER, role_code VARCHAR(10), first_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), last_name VARCHAR(50), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Treatments (treatment_id INTEGER, dog_id INTEGER, professional_id INTEGER, treatment_type_code VARCHAR(10), date_of_treatment DATETIME, cost_of_treatment DECIMAL(19,4));

medium

dog_kennels

SELECT DISTINCT T1.first_name , T3.treatment_type_description FROM professionals AS T1 JOIN Treatments AS T2 ON T1.professional_id = T2.professional_id JOIN Treatment_types AS T3 ON T2.treatment_type_code = T3.treatment_type_code

List the first name of all the professionals along with the description of the treatment they have done.

CREATE TABLE `Breeds` ( `breed_code` VARCHAR(10) PRIMARY KEY , `breed_name` VARCHAR(80) ); CREATE TABLE `Charges` ( `charge_id` INTEGER PRIMARY KEY , `charge_type` VARCHAR(10), `charge_amount` DECIMAL(19,4) ); CREATE TABLE `Sizes` ( `size_code` VARCHAR(10) PRIMARY KEY , `size_description` VARCHAR(80) ); CREATE TABLE `Treatment_Types` ( `treatment_type_code` VARCHAR(10) PRIMARY KEY , `treatment_type_description` VARCHAR(80) ); CREATE TABLE `Owners` ( `owner_id` INTEGER PRIMARY KEY , `first_name` VARCHAR(50), `last_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Dogs` ( `dog_id` INTEGER PRIMARY KEY , `owner_id` INTEGER NOT NULL, `abandoned_yn` VARCHAR(1), `breed_code` VARCHAR(10) NOT NULL, `size_code` VARCHAR(10) NOT NULL, `name` VARCHAR(50), `age` VARCHAR(20), `date_of_birth` DATETIME, `gender` VARCHAR(1), `weight` VARCHAR(20), `date_arrived` DATETIME, `date_adopted` DATETIME, `date_departed` DATETIME, FOREIGN KEY (`breed_code` ) REFERENCES `Breeds`(`breed_code` ), FOREIGN KEY (`size_code` ) REFERENCES `Sizes`(`size_code` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ) ); CREATE TABLE `Professionals` ( `professional_id` INTEGER PRIMARY KEY , `role_code` VARCHAR(10) NOT NULL, `first_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `last_name` VARCHAR(50), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Treatments` ( `treatment_id` INTEGER PRIMARY KEY , `dog_id` INTEGER NOT NULL, `professional_id` INTEGER NOT NULL, `treatment_type_code` VARCHAR(10) NOT NULL, `date_of_treatment` DATETIME, `cost_of_treatment` DECIMAL(19,4), FOREIGN KEY (`treatment_type_code` ) REFERENCES `Treatment_Types`(`treatment_type_code` ), FOREIGN KEY (`professional_id` ) REFERENCES `Professionals`(`professional_id` ), FOREIGN KEY (`dog_id` ) REFERENCES `Dogs`(`dog_id` ) );

CREATE TABLE Breeds (breed_code VARCHAR(10), breed_name VARCHAR(80)); CREATE TABLE Charges (charge_id INTEGER, charge_type VARCHAR(10), charge_amount DECIMAL(19,4)); CREATE TABLE Sizes (size_code VARCHAR(10), size_description VARCHAR(80)); CREATE TABLE Treatment_Types (treatment_type_code VARCHAR(10), treatment_type_description VARCHAR(80)); CREATE TABLE Owners (owner_id INTEGER, first_name VARCHAR(50), last_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Dogs (dog_id INTEGER, owner_id INTEGER, abandoned_yn VARCHAR(1), breed_code VARCHAR(10), size_code VARCHAR(10), name VARCHAR(50), age VARCHAR(20), date_of_birth DATETIME, gender VARCHAR(1), weight VARCHAR(20), date_arrived DATETIME, date_adopted DATETIME, date_departed DATETIME); CREATE TABLE Professionals (professional_id INTEGER, role_code VARCHAR(10), first_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), last_name VARCHAR(50), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Treatments (treatment_id INTEGER, dog_id INTEGER, professional_id INTEGER, treatment_type_code VARCHAR(10), date_of_treatment DATETIME, cost_of_treatment DECIMAL(19,4));

medium

dog_kennels

SELECT DISTINCT T1.first_name , T3.treatment_type_description FROM professionals AS T1 JOIN Treatments AS T2 ON T1.professional_id = T2.professional_id JOIN Treatment_types AS T3 ON T2.treatment_type_code = T3.treatment_type_code

What are each professional's first name and description of the treatment they have performed?

CREATE TABLE `Breeds` ( `breed_code` VARCHAR(10) PRIMARY KEY , `breed_name` VARCHAR(80) ); CREATE TABLE `Charges` ( `charge_id` INTEGER PRIMARY KEY , `charge_type` VARCHAR(10), `charge_amount` DECIMAL(19,4) ); CREATE TABLE `Sizes` ( `size_code` VARCHAR(10) PRIMARY KEY , `size_description` VARCHAR(80) ); CREATE TABLE `Treatment_Types` ( `treatment_type_code` VARCHAR(10) PRIMARY KEY , `treatment_type_description` VARCHAR(80) ); CREATE TABLE `Owners` ( `owner_id` INTEGER PRIMARY KEY , `first_name` VARCHAR(50), `last_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Dogs` ( `dog_id` INTEGER PRIMARY KEY , `owner_id` INTEGER NOT NULL, `abandoned_yn` VARCHAR(1), `breed_code` VARCHAR(10) NOT NULL, `size_code` VARCHAR(10) NOT NULL, `name` VARCHAR(50), `age` VARCHAR(20), `date_of_birth` DATETIME, `gender` VARCHAR(1), `weight` VARCHAR(20), `date_arrived` DATETIME, `date_adopted` DATETIME, `date_departed` DATETIME, FOREIGN KEY (`breed_code` ) REFERENCES `Breeds`(`breed_code` ), FOREIGN KEY (`size_code` ) REFERENCES `Sizes`(`size_code` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ), FOREIGN KEY (`owner_id` ) REFERENCES `Owners`(`owner_id` ) ); CREATE TABLE `Professionals` ( `professional_id` INTEGER PRIMARY KEY , `role_code` VARCHAR(10) NOT NULL, `first_name` VARCHAR(50), `street` VARCHAR(50), `city` VARCHAR(50), `state` VARCHAR(20), `zip_code` VARCHAR(20), `last_name` VARCHAR(50), `email_address` VARCHAR(50), `home_phone` VARCHAR(20), `cell_number` VARCHAR(20) ); CREATE TABLE `Treatments` ( `treatment_id` INTEGER PRIMARY KEY , `dog_id` INTEGER NOT NULL, `professional_id` INTEGER NOT NULL, `treatment_type_code` VARCHAR(10) NOT NULL, `date_of_treatment` DATETIME, `cost_of_treatment` DECIMAL(19,4), FOREIGN KEY (`treatment_type_code` ) REFERENCES `Treatment_Types`(`treatment_type_code` ), FOREIGN KEY (`professional_id` ) REFERENCES `Professionals`(`professional_id` ), FOREIGN KEY (`dog_id` ) REFERENCES `Dogs`(`dog_id` ) );

CREATE TABLE Breeds (breed_code VARCHAR(10), breed_name VARCHAR(80)); CREATE TABLE Charges (charge_id INTEGER, charge_type VARCHAR(10), charge_amount DECIMAL(19,4)); CREATE TABLE Sizes (size_code VARCHAR(10), size_description VARCHAR(80)); CREATE TABLE Treatment_Types (treatment_type_code VARCHAR(10), treatment_type_description VARCHAR(80)); CREATE TABLE Owners (owner_id INTEGER, first_name VARCHAR(50), last_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Dogs (dog_id INTEGER, owner_id INTEGER, abandoned_yn VARCHAR(1), breed_code VARCHAR(10), size_code VARCHAR(10), name VARCHAR(50), age VARCHAR(20), date_of_birth DATETIME, gender VARCHAR(1), weight VARCHAR(20), date_arrived DATETIME, date_adopted DATETIME, date_departed DATETIME); CREATE TABLE Professionals (professional_id INTEGER, role_code VARCHAR(10), first_name VARCHAR(50), street VARCHAR(50), city VARCHAR(50), state VARCHAR(20), zip_code VARCHAR(20), last_name VARCHAR(50), email_address VARCHAR(50), home_phone VARCHAR(20), cell_number VARCHAR(20)); CREATE TABLE Treatments (treatment_id INTEGER, dog_id INTEGER, professional_id INTEGER, treatment_type_code VARCHAR(10), date_of_treatment DATETIME, cost_of_treatment DECIMAL(19,4));

medium