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CREATE TABLE department (Department_ID number, Name text, Creation text, Ranking number, Budget_in_Billions number, Num_Employees number); CREATE TABLE head (head_ID number, name text, born_state text, age number); CREATE TABLE management (department_ID number, head_ID number, temporary_acting text);
How many heads of the departments are older than 56 ?
SELECT count(*) FROM head WHERE age > 56
easy
CREATE TABLE department (Department_ID number, Name text, Creation text, Ranking number, Budget_in_Billions number, Num_Employees number); CREATE TABLE head (head_ID number, name text, born_state text, age number); CREATE TABLE management (department_ID number, head_ID number, temporary_acting text);
List the name, born state and age of the heads of departments ordered by age.
SELECT name , born_state , age FROM head ORDER BY age
medium
CREATE TABLE department (Department_ID number, Name text, Creation text, Ranking number, Budget_in_Billions number, Num_Employees number); CREATE TABLE head (head_ID number, name text, born_state text, age number); CREATE TABLE management (department_ID number, head_ID number, temporary_acting text);
List the creation year, name and budget of each department.
SELECT creation , name , budget_in_billions FROM department
medium
CREATE TABLE department (Department_ID number, Name text, Creation text, Ranking number, Budget_in_Billions number, Num_Employees number); CREATE TABLE head (head_ID number, name text, born_state text, age number); CREATE TABLE management (department_ID number, head_ID number, temporary_acting text);
What are the maximum and minimum budget of the departments?
SELECT max(budget_in_billions) , min(budget_in_billions) FROM department
medium
CREATE TABLE department (Department_ID number, Name text, Creation text, Ranking number, Budget_in_Billions number, Num_Employees number); CREATE TABLE head (head_ID number, name text, born_state text, age number); CREATE TABLE management (department_ID number, head_ID number, temporary_acting text);
What is the average number of employees of the departments whose rank is between 10 and 15?
SELECT avg(num_employees) FROM department WHERE ranking BETWEEN 10 AND 15
easy
CREATE TABLE department (Department_ID number, Name text, Creation text, Ranking number, Budget_in_Billions number, Num_Employees number); CREATE TABLE head (head_ID number, name text, born_state text, age number); CREATE TABLE management (department_ID number, head_ID number, temporary_acting text);
What are the names of the heads who are born outside the California state?
SELECT name FROM head WHERE born_state != 'California'
easy
CREATE TABLE department (Department_ID number, Name text, Creation text, Ranking number, Budget_in_Billions number, Num_Employees number); CREATE TABLE head (head_ID number, name text, born_state text, age number); CREATE TABLE management (department_ID number, head_ID number, temporary_acting text);
What are the distinct creation years of the departments managed by a secretary born in state 'Alabama'?
SELECT DISTINCT T1.creation FROM department AS T1 JOIN management AS T2 ON T1.department_id = T2.department_id JOIN head AS T3 ON T2.head_id = T3.head_id WHERE T3.born_state = 'Alabama'
hard
CREATE TABLE department (Department_ID number, Name text, Creation text, Ranking number, Budget_in_Billions number, Num_Employees number); CREATE TABLE head (head_ID number, name text, born_state text, age number); CREATE TABLE management (department_ID number, head_ID number, temporary_acting text);
What are the names of the states where at least 3 heads were born?
SELECT born_state FROM head GROUP BY born_state HAVING count(*) >= 3
easy
CREATE TABLE department (Department_ID number, Name text, Creation text, Ranking number, Budget_in_Billions number, Num_Employees number); CREATE TABLE head (head_ID number, name text, born_state text, age number); CREATE TABLE management (department_ID number, head_ID number, temporary_acting text);
In which year were most departments established?
SELECT creation FROM department GROUP BY creation ORDER BY count(*) DESC LIMIT 1
hard
CREATE TABLE department (Department_ID number, Name text, Creation text, Ranking number, Budget_in_Billions number, Num_Employees number); CREATE TABLE head (head_ID number, name text, born_state text, age number); CREATE TABLE management (department_ID number, head_ID number, temporary_acting text);
Show the name and number of employees for the departments managed by heads whose temporary acting value is 'Yes'?
SELECT T1.name , T1.num_employees FROM department AS T1 JOIN management AS T2 ON T1.department_id = T2.department_id WHERE T2.temporary_acting = 'Yes'
medium
CREATE TABLE department (Department_ID number, Name text, Creation text, Ranking number, Budget_in_Billions number, Num_Employees number); CREATE TABLE head (head_ID number, name text, born_state text, age number); CREATE TABLE management (department_ID number, head_ID number, temporary_acting text);
How many acting statuses are there?
SELECT count(DISTINCT temporary_acting) FROM management
easy
CREATE TABLE department (Department_ID number, Name text, Creation text, Ranking number, Budget_in_Billions number, Num_Employees number); CREATE TABLE head (head_ID number, name text, born_state text, age number); CREATE TABLE management (department_ID number, head_ID number, temporary_acting text);
How many departments are led by heads who are not mentioned?
SELECT count(*) FROM department WHERE department_id NOT IN (SELECT department_id FROM management);
extra
CREATE TABLE department (Department_ID number, Name text, Creation text, Ranking number, Budget_in_Billions number, Num_Employees number); CREATE TABLE head (head_ID number, name text, born_state text, age number); CREATE TABLE management (department_ID number, head_ID number, temporary_acting text);
What are the distinct ages of the heads who are acting?
SELECT DISTINCT T1.age FROM management AS T2 JOIN head AS T1 ON T1.head_id = T2.head_id WHERE T2.temporary_acting = 'Yes'
medium
CREATE TABLE department (Department_ID number, Name text, Creation text, Ranking number, Budget_in_Billions number, Num_Employees number); CREATE TABLE head (head_ID number, name text, born_state text, age number); CREATE TABLE management (department_ID number, head_ID number, temporary_acting text);
List the states where both the secretary of 'Treasury' department and the secretary of 'Homeland Security' were born.
SELECT T3.born_state FROM department AS T1 JOIN management AS T2 ON T1.department_id = T2.department_id JOIN head AS T3 ON T2.head_id = T3.head_id WHERE T1.name = 'Treasury' INTERSECT SELECT T3.born_state FROM department AS T1 JOIN management AS T2 ON T1.department_id = T2.department_id JOIN head AS T3 ON T2.head_id = T3.head_id WHERE T1.name = 'Homeland Security'
extra
CREATE TABLE department (Department_ID number, Name text, Creation text, Ranking number, Budget_in_Billions number, Num_Employees number); CREATE TABLE head (head_ID number, name text, born_state text, age number); CREATE TABLE management (department_ID number, head_ID number, temporary_acting text);
Which department has more than 1 head at a time? List the id, name and the number of heads.
SELECT T1.department_id , T1.name , count(*) FROM management AS T2 JOIN department AS T1 ON T1.department_id = T2.department_id GROUP BY T1.department_id HAVING count(*) > 1
medium
CREATE TABLE department (Department_ID number, Name text, Creation text, Ranking number, Budget_in_Billions number, Num_Employees number); CREATE TABLE head (head_ID number, name text, born_state text, age number); CREATE TABLE management (department_ID number, head_ID number, temporary_acting text);
Which head's name has the substring 'Ha'? List the id and name.
SELECT head_id , name FROM head WHERE name LIKE '%Ha%'
medium
CREATE TABLE city (City_ID number, Official_Name text, Status text, Area_km_2 number, Population number, Census_Ranking text); CREATE TABLE farm (Farm_ID number, Year number, Total_Horses number, Working_Horses number, Total_Cattle number, Oxen number, Bulls number, Cows number, Pigs number, Sheep_and_Goats number); CREATE TABLE farm_competition (Competition_ID number, Year number, Theme text, Host_city_ID number, Hosts text); CREATE TABLE competition_record (Competition_ID number, Farm_ID number, Rank number);
How many farms are there?
SELECT count(*) FROM farm
easy
CREATE TABLE city (City_ID number, Official_Name text, Status text, Area_km_2 number, Population number, Census_Ranking text); CREATE TABLE farm (Farm_ID number, Year number, Total_Horses number, Working_Horses number, Total_Cattle number, Oxen number, Bulls number, Cows number, Pigs number, Sheep_and_Goats number); CREATE TABLE farm_competition (Competition_ID number, Year number, Theme text, Host_city_ID number, Hosts text); CREATE TABLE competition_record (Competition_ID number, Farm_ID number, Rank number);
Count the number of farms.
SELECT count(*) FROM farm
easy
CREATE TABLE city (City_ID number, Official_Name text, Status text, Area_km_2 number, Population number, Census_Ranking text); CREATE TABLE farm (Farm_ID number, Year number, Total_Horses number, Working_Horses number, Total_Cattle number, Oxen number, Bulls number, Cows number, Pigs number, Sheep_and_Goats number); CREATE TABLE farm_competition (Competition_ID number, Year number, Theme text, Host_city_ID number, Hosts text); CREATE TABLE competition_record (Competition_ID number, Farm_ID number, Rank number);
List the total number of horses on farms in ascending order.
SELECT Total_Horses FROM farm ORDER BY Total_Horses ASC
easy
CREATE TABLE city (City_ID number, Official_Name text, Status text, Area_km_2 number, Population number, Census_Ranking text); CREATE TABLE farm (Farm_ID number, Year number, Total_Horses number, Working_Horses number, Total_Cattle number, Oxen number, Bulls number, Cows number, Pigs number, Sheep_and_Goats number); CREATE TABLE farm_competition (Competition_ID number, Year number, Theme text, Host_city_ID number, Hosts text); CREATE TABLE competition_record (Competition_ID number, Farm_ID number, Rank number);
What is the total horses record for each farm, sorted ascending?
SELECT Total_Horses FROM farm ORDER BY Total_Horses ASC
easy
CREATE TABLE city (City_ID number, Official_Name text, Status text, Area_km_2 number, Population number, Census_Ranking text); CREATE TABLE farm (Farm_ID number, Year number, Total_Horses number, Working_Horses number, Total_Cattle number, Oxen number, Bulls number, Cows number, Pigs number, Sheep_and_Goats number); CREATE TABLE farm_competition (Competition_ID number, Year number, Theme text, Host_city_ID number, Hosts text); CREATE TABLE competition_record (Competition_ID number, Farm_ID number, Rank number);
What are the hosts of competitions whose theme is not "Aliens"?
SELECT Hosts FROM farm_competition WHERE Theme != 'Aliens'
easy
CREATE TABLE city (City_ID number, Official_Name text, Status text, Area_km_2 number, Population number, Census_Ranking text); CREATE TABLE farm (Farm_ID number, Year number, Total_Horses number, Working_Horses number, Total_Cattle number, Oxen number, Bulls number, Cows number, Pigs number, Sheep_and_Goats number); CREATE TABLE farm_competition (Competition_ID number, Year number, Theme text, Host_city_ID number, Hosts text); CREATE TABLE competition_record (Competition_ID number, Farm_ID number, Rank number);
Return the hosts of competitions for which the theme is not Aliens?
SELECT Hosts FROM farm_competition WHERE Theme != 'Aliens'
easy
CREATE TABLE city (City_ID number, Official_Name text, Status text, Area_km_2 number, Population number, Census_Ranking text); CREATE TABLE farm (Farm_ID number, Year number, Total_Horses number, Working_Horses number, Total_Cattle number, Oxen number, Bulls number, Cows number, Pigs number, Sheep_and_Goats number); CREATE TABLE farm_competition (Competition_ID number, Year number, Theme text, Host_city_ID number, Hosts text); CREATE TABLE competition_record (Competition_ID number, Farm_ID number, Rank number);
What are the themes of farm competitions sorted by year in ascending order?
SELECT Theme FROM farm_competition ORDER BY YEAR ASC
easy
CREATE TABLE city (City_ID number, Official_Name text, Status text, Area_km_2 number, Population number, Census_Ranking text); CREATE TABLE farm (Farm_ID number, Year number, Total_Horses number, Working_Horses number, Total_Cattle number, Oxen number, Bulls number, Cows number, Pigs number, Sheep_and_Goats number); CREATE TABLE farm_competition (Competition_ID number, Year number, Theme text, Host_city_ID number, Hosts text); CREATE TABLE competition_record (Competition_ID number, Farm_ID number, Rank number);
Return the themes of farm competitions, sorted by year ascending.
SELECT Theme FROM farm_competition ORDER BY YEAR ASC
easy
CREATE TABLE city (City_ID number, Official_Name text, Status text, Area_km_2 number, Population number, Census_Ranking text); CREATE TABLE farm (Farm_ID number, Year number, Total_Horses number, Working_Horses number, Total_Cattle number, Oxen number, Bulls number, Cows number, Pigs number, Sheep_and_Goats number); CREATE TABLE farm_competition (Competition_ID number, Year number, Theme text, Host_city_ID number, Hosts text); CREATE TABLE competition_record (Competition_ID number, Farm_ID number, Rank number);
What is the average number of working horses of farms with more than 5000 total number of horses?
SELECT avg(Working_Horses) FROM farm WHERE Total_Horses > 5000
easy
CREATE TABLE city (City_ID number, Official_Name text, Status text, Area_km_2 number, Population number, Census_Ranking text); CREATE TABLE farm (Farm_ID number, Year number, Total_Horses number, Working_Horses number, Total_Cattle number, Oxen number, Bulls number, Cows number, Pigs number, Sheep_and_Goats number); CREATE TABLE farm_competition (Competition_ID number, Year number, Theme text, Host_city_ID number, Hosts text); CREATE TABLE competition_record (Competition_ID number, Farm_ID number, Rank number);
Give the average number of working horses on farms with more than 5000 total horses.
SELECT avg(Working_Horses) FROM farm WHERE Total_Horses > 5000
easy
CREATE TABLE city (City_ID number, Official_Name text, Status text, Area_km_2 number, Population number, Census_Ranking text); CREATE TABLE farm (Farm_ID number, Year number, Total_Horses number, Working_Horses number, Total_Cattle number, Oxen number, Bulls number, Cows number, Pigs number, Sheep_and_Goats number); CREATE TABLE farm_competition (Competition_ID number, Year number, Theme text, Host_city_ID number, Hosts text); CREATE TABLE competition_record (Competition_ID number, Farm_ID number, Rank number);
What are the maximum and minimum number of cows across all farms.
SELECT max(Cows) , min(Cows) FROM farm
medium
CREATE TABLE city (City_ID number, Official_Name text, Status text, Area_km_2 number, Population number, Census_Ranking text); CREATE TABLE farm (Farm_ID number, Year number, Total_Horses number, Working_Horses number, Total_Cattle number, Oxen number, Bulls number, Cows number, Pigs number, Sheep_and_Goats number); CREATE TABLE farm_competition (Competition_ID number, Year number, Theme text, Host_city_ID number, Hosts text); CREATE TABLE competition_record (Competition_ID number, Farm_ID number, Rank number);
Return the maximum and minimum number of cows across all farms.
SELECT max(Cows) , min(Cows) FROM farm
medium
CREATE TABLE city (City_ID number, Official_Name text, Status text, Area_km_2 number, Population number, Census_Ranking text); CREATE TABLE farm (Farm_ID number, Year number, Total_Horses number, Working_Horses number, Total_Cattle number, Oxen number, Bulls number, Cows number, Pigs number, Sheep_and_Goats number); CREATE TABLE farm_competition (Competition_ID number, Year number, Theme text, Host_city_ID number, Hosts text); CREATE TABLE competition_record (Competition_ID number, Farm_ID number, Rank number);
How many different statuses do cities have?
SELECT count(DISTINCT Status) FROM city
easy
CREATE TABLE city (City_ID number, Official_Name text, Status text, Area_km_2 number, Population number, Census_Ranking text); CREATE TABLE farm (Farm_ID number, Year number, Total_Horses number, Working_Horses number, Total_Cattle number, Oxen number, Bulls number, Cows number, Pigs number, Sheep_and_Goats number); CREATE TABLE farm_competition (Competition_ID number, Year number, Theme text, Host_city_ID number, Hosts text); CREATE TABLE competition_record (Competition_ID number, Farm_ID number, Rank number);
Count the number of different statuses.
SELECT count(DISTINCT Status) FROM city
easy
CREATE TABLE city (City_ID number, Official_Name text, Status text, Area_km_2 number, Population number, Census_Ranking text); CREATE TABLE farm (Farm_ID number, Year number, Total_Horses number, Working_Horses number, Total_Cattle number, Oxen number, Bulls number, Cows number, Pigs number, Sheep_and_Goats number); CREATE TABLE farm_competition (Competition_ID number, Year number, Theme text, Host_city_ID number, Hosts text); CREATE TABLE competition_record (Competition_ID number, Farm_ID number, Rank number);
List official names of cities in descending order of population.
SELECT Official_Name FROM city ORDER BY Population DESC
easy
CREATE TABLE city (City_ID number, Official_Name text, Status text, Area_km_2 number, Population number, Census_Ranking text); CREATE TABLE farm (Farm_ID number, Year number, Total_Horses number, Working_Horses number, Total_Cattle number, Oxen number, Bulls number, Cows number, Pigs number, Sheep_and_Goats number); CREATE TABLE farm_competition (Competition_ID number, Year number, Theme text, Host_city_ID number, Hosts text); CREATE TABLE competition_record (Competition_ID number, Farm_ID number, Rank number);
What are the official names of cities, ordered descending by population?
SELECT Official_Name FROM city ORDER BY Population DESC
easy
CREATE TABLE city (City_ID number, Official_Name text, Status text, Area_km_2 number, Population number, Census_Ranking text); CREATE TABLE farm (Farm_ID number, Year number, Total_Horses number, Working_Horses number, Total_Cattle number, Oxen number, Bulls number, Cows number, Pigs number, Sheep_and_Goats number); CREATE TABLE farm_competition (Competition_ID number, Year number, Theme text, Host_city_ID number, Hosts text); CREATE TABLE competition_record (Competition_ID number, Farm_ID number, Rank number);
List the official name and status of the city with the largest population.
SELECT Official_Name , Status FROM city ORDER BY Population DESC LIMIT 1
medium
CREATE TABLE city (City_ID number, Official_Name text, Status text, Area_km_2 number, Population number, Census_Ranking text); CREATE TABLE farm (Farm_ID number, Year number, Total_Horses number, Working_Horses number, Total_Cattle number, Oxen number, Bulls number, Cows number, Pigs number, Sheep_and_Goats number); CREATE TABLE farm_competition (Competition_ID number, Year number, Theme text, Host_city_ID number, Hosts text); CREATE TABLE competition_record (Competition_ID number, Farm_ID number, Rank number);
What is the official name and status of the city with the most residents?
SELECT Official_Name , Status FROM city ORDER BY Population DESC LIMIT 1
medium
CREATE TABLE city (City_ID number, Official_Name text, Status text, Area_km_2 number, Population number, Census_Ranking text); CREATE TABLE farm (Farm_ID number, Year number, Total_Horses number, Working_Horses number, Total_Cattle number, Oxen number, Bulls number, Cows number, Pigs number, Sheep_and_Goats number); CREATE TABLE farm_competition (Competition_ID number, Year number, Theme text, Host_city_ID number, Hosts text); CREATE TABLE competition_record (Competition_ID number, Farm_ID number, Rank number);
Show the years and the official names of the host cities of competitions.
SELECT T2.Year , T1.Official_Name FROM city AS T1 JOIN farm_competition AS T2 ON T1.City_ID = T2.Host_city_ID
medium
CREATE TABLE city (City_ID number, Official_Name text, Status text, Area_km_2 number, Population number, Census_Ranking text); CREATE TABLE farm (Farm_ID number, Year number, Total_Horses number, Working_Horses number, Total_Cattle number, Oxen number, Bulls number, Cows number, Pigs number, Sheep_and_Goats number); CREATE TABLE farm_competition (Competition_ID number, Year number, Theme text, Host_city_ID number, Hosts text); CREATE TABLE competition_record (Competition_ID number, Farm_ID number, Rank number);
Give the years and official names of the cities of each competition.
SELECT T2.Year , T1.Official_Name FROM city AS T1 JOIN farm_competition AS T2 ON T1.City_ID = T2.Host_city_ID
medium
CREATE TABLE city (City_ID number, Official_Name text, Status text, Area_km_2 number, Population number, Census_Ranking text); CREATE TABLE farm (Farm_ID number, Year number, Total_Horses number, Working_Horses number, Total_Cattle number, Oxen number, Bulls number, Cows number, Pigs number, Sheep_and_Goats number); CREATE TABLE farm_competition (Competition_ID number, Year number, Theme text, Host_city_ID number, Hosts text); CREATE TABLE competition_record (Competition_ID number, Farm_ID number, Rank number);
Show the official names of the cities that have hosted more than one competition.
SELECT T1.Official_Name FROM city AS T1 JOIN farm_competition AS T2 ON T1.City_ID = T2.Host_city_ID GROUP BY T2.Host_city_ID HAVING COUNT(*) > 1
medium
CREATE TABLE city (City_ID number, Official_Name text, Status text, Area_km_2 number, Population number, Census_Ranking text); CREATE TABLE farm (Farm_ID number, Year number, Total_Horses number, Working_Horses number, Total_Cattle number, Oxen number, Bulls number, Cows number, Pigs number, Sheep_and_Goats number); CREATE TABLE farm_competition (Competition_ID number, Year number, Theme text, Host_city_ID number, Hosts text); CREATE TABLE competition_record (Competition_ID number, Farm_ID number, Rank number);
What are the official names of cities that have hosted more than one competition?
SELECT T1.Official_Name FROM city AS T1 JOIN farm_competition AS T2 ON T1.City_ID = T2.Host_city_ID GROUP BY T2.Host_city_ID HAVING COUNT(*) > 1
medium
CREATE TABLE city (City_ID number, Official_Name text, Status text, Area_km_2 number, Population number, Census_Ranking text); CREATE TABLE farm (Farm_ID number, Year number, Total_Horses number, Working_Horses number, Total_Cattle number, Oxen number, Bulls number, Cows number, Pigs number, Sheep_and_Goats number); CREATE TABLE farm_competition (Competition_ID number, Year number, Theme text, Host_city_ID number, Hosts text); CREATE TABLE competition_record (Competition_ID number, Farm_ID number, Rank number);
Show the status of the city that has hosted the greatest number of competitions.
SELECT T1.Status FROM city AS T1 JOIN farm_competition AS T2 ON T1.City_ID = T2.Host_city_ID GROUP BY T2.Host_city_ID ORDER BY COUNT(*) DESC LIMIT 1
extra
CREATE TABLE city (City_ID number, Official_Name text, Status text, Area_km_2 number, Population number, Census_Ranking text); CREATE TABLE farm (Farm_ID number, Year number, Total_Horses number, Working_Horses number, Total_Cattle number, Oxen number, Bulls number, Cows number, Pigs number, Sheep_and_Goats number); CREATE TABLE farm_competition (Competition_ID number, Year number, Theme text, Host_city_ID number, Hosts text); CREATE TABLE competition_record (Competition_ID number, Farm_ID number, Rank number);
What is the status of the city that has hosted the most competitions?
SELECT T1.Status FROM city AS T1 JOIN farm_competition AS T2 ON T1.City_ID = T2.Host_city_ID GROUP BY T2.Host_city_ID ORDER BY COUNT(*) DESC LIMIT 1
extra
CREATE TABLE city (City_ID number, Official_Name text, Status text, Area_km_2 number, Population number, Census_Ranking text); CREATE TABLE farm (Farm_ID number, Year number, Total_Horses number, Working_Horses number, Total_Cattle number, Oxen number, Bulls number, Cows number, Pigs number, Sheep_and_Goats number); CREATE TABLE farm_competition (Competition_ID number, Year number, Theme text, Host_city_ID number, Hosts text); CREATE TABLE competition_record (Competition_ID number, Farm_ID number, Rank number);
Please show the themes of competitions with host cities having populations larger than 1000.
SELECT T2.Theme FROM city AS T1 JOIN farm_competition AS T2 ON T1.City_ID = T2.Host_city_ID WHERE T1.Population > 1000
medium
CREATE TABLE city (City_ID number, Official_Name text, Status text, Area_km_2 number, Population number, Census_Ranking text); CREATE TABLE farm (Farm_ID number, Year number, Total_Horses number, Working_Horses number, Total_Cattle number, Oxen number, Bulls number, Cows number, Pigs number, Sheep_and_Goats number); CREATE TABLE farm_competition (Competition_ID number, Year number, Theme text, Host_city_ID number, Hosts text); CREATE TABLE competition_record (Competition_ID number, Farm_ID number, Rank number);
What are the themes of competitions that have corresponding host cities with more than 1000 residents?
SELECT T2.Theme FROM city AS T1 JOIN farm_competition AS T2 ON T1.City_ID = T2.Host_city_ID WHERE T1.Population > 1000
medium
CREATE TABLE city (City_ID number, Official_Name text, Status text, Area_km_2 number, Population number, Census_Ranking text); CREATE TABLE farm (Farm_ID number, Year number, Total_Horses number, Working_Horses number, Total_Cattle number, Oxen number, Bulls number, Cows number, Pigs number, Sheep_and_Goats number); CREATE TABLE farm_competition (Competition_ID number, Year number, Theme text, Host_city_ID number, Hosts text); CREATE TABLE competition_record (Competition_ID number, Farm_ID number, Rank number);
Please show the different statuses of cities and the average population of cities with each status.
SELECT Status , avg(Population) FROM city GROUP BY Status
medium
CREATE TABLE city (City_ID number, Official_Name text, Status text, Area_km_2 number, Population number, Census_Ranking text); CREATE TABLE farm (Farm_ID number, Year number, Total_Horses number, Working_Horses number, Total_Cattle number, Oxen number, Bulls number, Cows number, Pigs number, Sheep_and_Goats number); CREATE TABLE farm_competition (Competition_ID number, Year number, Theme text, Host_city_ID number, Hosts text); CREATE TABLE competition_record (Competition_ID number, Farm_ID number, Rank number);
What are the statuses and average populations of each city?
SELECT Status , avg(Population) FROM city GROUP BY Status
medium
CREATE TABLE city (City_ID number, Official_Name text, Status text, Area_km_2 number, Population number, Census_Ranking text); CREATE TABLE farm (Farm_ID number, Year number, Total_Horses number, Working_Horses number, Total_Cattle number, Oxen number, Bulls number, Cows number, Pigs number, Sheep_and_Goats number); CREATE TABLE farm_competition (Competition_ID number, Year number, Theme text, Host_city_ID number, Hosts text); CREATE TABLE competition_record (Competition_ID number, Farm_ID number, Rank number);
Please show the different statuses, ordered by the number of cities that have each.
SELECT Status FROM city GROUP BY Status ORDER BY COUNT(*) ASC
medium
CREATE TABLE city (City_ID number, Official_Name text, Status text, Area_km_2 number, Population number, Census_Ranking text); CREATE TABLE farm (Farm_ID number, Year number, Total_Horses number, Working_Horses number, Total_Cattle number, Oxen number, Bulls number, Cows number, Pigs number, Sheep_and_Goats number); CREATE TABLE farm_competition (Competition_ID number, Year number, Theme text, Host_city_ID number, Hosts text); CREATE TABLE competition_record (Competition_ID number, Farm_ID number, Rank number);
Return the different statuses of cities, ascending by frequency.
SELECT Status FROM city GROUP BY Status ORDER BY COUNT(*) ASC
medium
CREATE TABLE city (City_ID number, Official_Name text, Status text, Area_km_2 number, Population number, Census_Ranking text); CREATE TABLE farm (Farm_ID number, Year number, Total_Horses number, Working_Horses number, Total_Cattle number, Oxen number, Bulls number, Cows number, Pigs number, Sheep_and_Goats number); CREATE TABLE farm_competition (Competition_ID number, Year number, Theme text, Host_city_ID number, Hosts text); CREATE TABLE competition_record (Competition_ID number, Farm_ID number, Rank number);
List the most common type of Status across cities.
SELECT Status FROM city GROUP BY Status ORDER BY COUNT(*) DESC LIMIT 1
hard
CREATE TABLE city (City_ID number, Official_Name text, Status text, Area_km_2 number, Population number, Census_Ranking text); CREATE TABLE farm (Farm_ID number, Year number, Total_Horses number, Working_Horses number, Total_Cattle number, Oxen number, Bulls number, Cows number, Pigs number, Sheep_and_Goats number); CREATE TABLE farm_competition (Competition_ID number, Year number, Theme text, Host_city_ID number, Hosts text); CREATE TABLE competition_record (Competition_ID number, Farm_ID number, Rank number);
What is the most common status across all cities?
SELECT Status FROM city GROUP BY Status ORDER BY COUNT(*) DESC LIMIT 1
hard
CREATE TABLE city (City_ID number, Official_Name text, Status text, Area_km_2 number, Population number, Census_Ranking text); CREATE TABLE farm (Farm_ID number, Year number, Total_Horses number, Working_Horses number, Total_Cattle number, Oxen number, Bulls number, Cows number, Pigs number, Sheep_and_Goats number); CREATE TABLE farm_competition (Competition_ID number, Year number, Theme text, Host_city_ID number, Hosts text); CREATE TABLE competition_record (Competition_ID number, Farm_ID number, Rank number);
List the official names of cities that have not held any competition.
SELECT Official_Name FROM city WHERE City_ID NOT IN (SELECT Host_city_ID FROM farm_competition)
hard
CREATE TABLE city (City_ID number, Official_Name text, Status text, Area_km_2 number, Population number, Census_Ranking text); CREATE TABLE farm (Farm_ID number, Year number, Total_Horses number, Working_Horses number, Total_Cattle number, Oxen number, Bulls number, Cows number, Pigs number, Sheep_and_Goats number); CREATE TABLE farm_competition (Competition_ID number, Year number, Theme text, Host_city_ID number, Hosts text); CREATE TABLE competition_record (Competition_ID number, Farm_ID number, Rank number);
What are the official names of cities that have not hosted a farm competition?
SELECT Official_Name FROM city WHERE City_ID NOT IN (SELECT Host_city_ID FROM farm_competition)
hard
CREATE TABLE city (City_ID number, Official_Name text, Status text, Area_km_2 number, Population number, Census_Ranking text); CREATE TABLE farm (Farm_ID number, Year number, Total_Horses number, Working_Horses number, Total_Cattle number, Oxen number, Bulls number, Cows number, Pigs number, Sheep_and_Goats number); CREATE TABLE farm_competition (Competition_ID number, Year number, Theme text, Host_city_ID number, Hosts text); CREATE TABLE competition_record (Competition_ID number, Farm_ID number, Rank number);
Show the status shared by cities with population bigger than 1500 and smaller than 500.
SELECT Status FROM city WHERE Population > 1500 INTERSECT SELECT Status FROM city WHERE Population < 500
hard
CREATE TABLE city (City_ID number, Official_Name text, Status text, Area_km_2 number, Population number, Census_Ranking text); CREATE TABLE farm (Farm_ID number, Year number, Total_Horses number, Working_Horses number, Total_Cattle number, Oxen number, Bulls number, Cows number, Pigs number, Sheep_and_Goats number); CREATE TABLE farm_competition (Competition_ID number, Year number, Theme text, Host_city_ID number, Hosts text); CREATE TABLE competition_record (Competition_ID number, Farm_ID number, Rank number);
Which statuses correspond to both cities that have a population over 1500 and cities that have a population lower than 500?
SELECT Status FROM city WHERE Population > 1500 INTERSECT SELECT Status FROM city WHERE Population < 500
hard
CREATE TABLE city (City_ID number, Official_Name text, Status text, Area_km_2 number, Population number, Census_Ranking text); CREATE TABLE farm (Farm_ID number, Year number, Total_Horses number, Working_Horses number, Total_Cattle number, Oxen number, Bulls number, Cows number, Pigs number, Sheep_and_Goats number); CREATE TABLE farm_competition (Competition_ID number, Year number, Theme text, Host_city_ID number, Hosts text); CREATE TABLE competition_record (Competition_ID number, Farm_ID number, Rank number);
Find the official names of cities with population bigger than 1500 or smaller than 500.
SELECT Official_Name FROM city WHERE Population > 1500 OR Population < 500
medium
CREATE TABLE city (City_ID number, Official_Name text, Status text, Area_km_2 number, Population number, Census_Ranking text); CREATE TABLE farm (Farm_ID number, Year number, Total_Horses number, Working_Horses number, Total_Cattle number, Oxen number, Bulls number, Cows number, Pigs number, Sheep_and_Goats number); CREATE TABLE farm_competition (Competition_ID number, Year number, Theme text, Host_city_ID number, Hosts text); CREATE TABLE competition_record (Competition_ID number, Farm_ID number, Rank number);
What are the official names of cities that have population over 1500 or less than 500?
SELECT Official_Name FROM city WHERE Population > 1500 OR Population < 500
medium
CREATE TABLE city (City_ID number, Official_Name text, Status text, Area_km_2 number, Population number, Census_Ranking text); CREATE TABLE farm (Farm_ID number, Year number, Total_Horses number, Working_Horses number, Total_Cattle number, Oxen number, Bulls number, Cows number, Pigs number, Sheep_and_Goats number); CREATE TABLE farm_competition (Competition_ID number, Year number, Theme text, Host_city_ID number, Hosts text); CREATE TABLE competition_record (Competition_ID number, Farm_ID number, Rank number);
Show the census ranking of cities whose status are not "Village".
SELECT Census_Ranking FROM city WHERE Status != "Village"
easy
CREATE TABLE city (City_ID number, Official_Name text, Status text, Area_km_2 number, Population number, Census_Ranking text); CREATE TABLE farm (Farm_ID number, Year number, Total_Horses number, Working_Horses number, Total_Cattle number, Oxen number, Bulls number, Cows number, Pigs number, Sheep_and_Goats number); CREATE TABLE farm_competition (Competition_ID number, Year number, Theme text, Host_city_ID number, Hosts text); CREATE TABLE competition_record (Competition_ID number, Farm_ID number, Rank number);
What are the census rankings of cities that do not have the status "Village"?
SELECT Census_Ranking FROM city WHERE Status != "Village"
easy
CREATE TABLE Addresses (address_id number, line_1 text, line_2 text, city text, zip_postcode text, state_province_county text, country text); CREATE TABLE People (person_id number, first_name text, middle_name text, last_name text, cell_mobile_number text, email_address text, login_name text, password text); CREATE TABLE Students (student_id number, student_details text); CREATE TABLE Courses (course_id text, course_name text, course_description text, other_details text); CREATE TABLE People_Addresses (person_address_id number, person_id number, address_id number, date_from time, date_to time); CREATE TABLE Student_Course_Registrations (student_id number, course_id number, registration_date time); CREATE TABLE Student_Course_Attendance (student_id number, course_id number, date_of_attendance time); CREATE TABLE Candidates (candidate_id number, candidate_details text); CREATE TABLE Candidate_Assessments (candidate_id number, qualification text, assessment_date time, asessment_outcome_code text);
which course has most number of registered students?
SELECT T1.course_name FROM courses AS T1 JOIN student_course_registrations AS T2 ON T1.course_id = T2.course_Id GROUP BY T1.course_id ORDER BY count(*) DESC LIMIT 1
extra
CREATE TABLE Addresses (address_id number, line_1 text, line_2 text, city text, zip_postcode text, state_province_county text, country text); CREATE TABLE People (person_id number, first_name text, middle_name text, last_name text, cell_mobile_number text, email_address text, login_name text, password text); CREATE TABLE Students (student_id number, student_details text); CREATE TABLE Courses (course_id text, course_name text, course_description text, other_details text); CREATE TABLE People_Addresses (person_address_id number, person_id number, address_id number, date_from time, date_to time); CREATE TABLE Student_Course_Registrations (student_id number, course_id number, registration_date time); CREATE TABLE Student_Course_Attendance (student_id number, course_id number, date_of_attendance time); CREATE TABLE Candidates (candidate_id number, candidate_details text); CREATE TABLE Candidate_Assessments (candidate_id number, qualification text, assessment_date time, asessment_outcome_code text);
What is the name of the course with the most registered students?
SELECT T1.course_name FROM courses AS T1 JOIN student_course_registrations AS T2 ON T1.course_id = T2.course_Id GROUP BY T1.course_id ORDER BY count(*) DESC LIMIT 1
extra
CREATE TABLE Addresses (address_id number, line_1 text, line_2 text, city text, zip_postcode text, state_province_county text, country text); CREATE TABLE People (person_id number, first_name text, middle_name text, last_name text, cell_mobile_number text, email_address text, login_name text, password text); CREATE TABLE Students (student_id number, student_details text); CREATE TABLE Courses (course_id text, course_name text, course_description text, other_details text); CREATE TABLE People_Addresses (person_address_id number, person_id number, address_id number, date_from time, date_to time); CREATE TABLE Student_Course_Registrations (student_id number, course_id number, registration_date time); CREATE TABLE Student_Course_Attendance (student_id number, course_id number, date_of_attendance time); CREATE TABLE Candidates (candidate_id number, candidate_details text); CREATE TABLE Candidate_Assessments (candidate_id number, qualification text, assessment_date time, asessment_outcome_code text);
what is id of students who registered some courses but the least number of courses in these students?
SELECT student_id FROM student_course_registrations GROUP BY student_id ORDER BY count(*) LIMIT 1
hard
CREATE TABLE Addresses (address_id number, line_1 text, line_2 text, city text, zip_postcode text, state_province_county text, country text); CREATE TABLE People (person_id number, first_name text, middle_name text, last_name text, cell_mobile_number text, email_address text, login_name text, password text); CREATE TABLE Students (student_id number, student_details text); CREATE TABLE Courses (course_id text, course_name text, course_description text, other_details text); CREATE TABLE People_Addresses (person_address_id number, person_id number, address_id number, date_from time, date_to time); CREATE TABLE Student_Course_Registrations (student_id number, course_id number, registration_date time); CREATE TABLE Student_Course_Attendance (student_id number, course_id number, date_of_attendance time); CREATE TABLE Candidates (candidate_id number, candidate_details text); CREATE TABLE Candidate_Assessments (candidate_id number, qualification text, assessment_date time, asessment_outcome_code text);
What are the ids of the students who registered for some courses but had the least number of courses for all students?
SELECT student_id FROM student_course_registrations GROUP BY student_id ORDER BY count(*) LIMIT 1
hard
CREATE TABLE Addresses (address_id number, line_1 text, line_2 text, city text, zip_postcode text, state_province_county text, country text); CREATE TABLE People (person_id number, first_name text, middle_name text, last_name text, cell_mobile_number text, email_address text, login_name text, password text); CREATE TABLE Students (student_id number, student_details text); CREATE TABLE Courses (course_id text, course_name text, course_description text, other_details text); CREATE TABLE People_Addresses (person_address_id number, person_id number, address_id number, date_from time, date_to time); CREATE TABLE Student_Course_Registrations (student_id number, course_id number, registration_date time); CREATE TABLE Student_Course_Attendance (student_id number, course_id number, date_of_attendance time); CREATE TABLE Candidates (candidate_id number, candidate_details text); CREATE TABLE Candidate_Assessments (candidate_id number, qualification text, assessment_date time, asessment_outcome_code text);
what are the first name and last name of all candidates?
SELECT T2.first_name , T2.last_name FROM candidates AS T1 JOIN people AS T2 ON T1.candidate_id = T2.person_id
medium
CREATE TABLE Addresses (address_id number, line_1 text, line_2 text, city text, zip_postcode text, state_province_county text, country text); CREATE TABLE People (person_id number, first_name text, middle_name text, last_name text, cell_mobile_number text, email_address text, login_name text, password text); CREATE TABLE Students (student_id number, student_details text); CREATE TABLE Courses (course_id text, course_name text, course_description text, other_details text); CREATE TABLE People_Addresses (person_address_id number, person_id number, address_id number, date_from time, date_to time); CREATE TABLE Student_Course_Registrations (student_id number, course_id number, registration_date time); CREATE TABLE Student_Course_Attendance (student_id number, course_id number, date_of_attendance time); CREATE TABLE Candidates (candidate_id number, candidate_details text); CREATE TABLE Candidate_Assessments (candidate_id number, qualification text, assessment_date time, asessment_outcome_code text);
What are the first and last names of all the candidates?
SELECT T2.first_name , T2.last_name FROM candidates AS T1 JOIN people AS T2 ON T1.candidate_id = T2.person_id
medium
CREATE TABLE Addresses (address_id number, line_1 text, line_2 text, city text, zip_postcode text, state_province_county text, country text); CREATE TABLE People (person_id number, first_name text, middle_name text, last_name text, cell_mobile_number text, email_address text, login_name text, password text); CREATE TABLE Students (student_id number, student_details text); CREATE TABLE Courses (course_id text, course_name text, course_description text, other_details text); CREATE TABLE People_Addresses (person_address_id number, person_id number, address_id number, date_from time, date_to time); CREATE TABLE Student_Course_Registrations (student_id number, course_id number, registration_date time); CREATE TABLE Student_Course_Attendance (student_id number, course_id number, date_of_attendance time); CREATE TABLE Candidates (candidate_id number, candidate_details text); CREATE TABLE Candidate_Assessments (candidate_id number, qualification text, assessment_date time, asessment_outcome_code text);
List the id of students who never attends courses?
SELECT student_id FROM students WHERE student_id NOT IN (SELECT student_id FROM student_course_attendance)
hard
CREATE TABLE Addresses (address_id number, line_1 text, line_2 text, city text, zip_postcode text, state_province_county text, country text); CREATE TABLE People (person_id number, first_name text, middle_name text, last_name text, cell_mobile_number text, email_address text, login_name text, password text); CREATE TABLE Students (student_id number, student_details text); CREATE TABLE Courses (course_id text, course_name text, course_description text, other_details text); CREATE TABLE People_Addresses (person_address_id number, person_id number, address_id number, date_from time, date_to time); CREATE TABLE Student_Course_Registrations (student_id number, course_id number, registration_date time); CREATE TABLE Student_Course_Attendance (student_id number, course_id number, date_of_attendance time); CREATE TABLE Candidates (candidate_id number, candidate_details text); CREATE TABLE Candidate_Assessments (candidate_id number, qualification text, assessment_date time, asessment_outcome_code text);
What are the ids of every student who has never attended a course?
SELECT student_id FROM students WHERE student_id NOT IN (SELECT student_id FROM student_course_attendance)
hard
CREATE TABLE Addresses (address_id number, line_1 text, line_2 text, city text, zip_postcode text, state_province_county text, country text); CREATE TABLE People (person_id number, first_name text, middle_name text, last_name text, cell_mobile_number text, email_address text, login_name text, password text); CREATE TABLE Students (student_id number, student_details text); CREATE TABLE Courses (course_id text, course_name text, course_description text, other_details text); CREATE TABLE People_Addresses (person_address_id number, person_id number, address_id number, date_from time, date_to time); CREATE TABLE Student_Course_Registrations (student_id number, course_id number, registration_date time); CREATE TABLE Student_Course_Attendance (student_id number, course_id number, date_of_attendance time); CREATE TABLE Candidates (candidate_id number, candidate_details text); CREATE TABLE Candidate_Assessments (candidate_id number, qualification text, assessment_date time, asessment_outcome_code text);
List the id of students who attended some courses?
SELECT student_id FROM student_course_attendance
easy
CREATE TABLE Addresses (address_id number, line_1 text, line_2 text, city text, zip_postcode text, state_province_county text, country text); CREATE TABLE People (person_id number, first_name text, middle_name text, last_name text, cell_mobile_number text, email_address text, login_name text, password text); CREATE TABLE Students (student_id number, student_details text); CREATE TABLE Courses (course_id text, course_name text, course_description text, other_details text); CREATE TABLE People_Addresses (person_address_id number, person_id number, address_id number, date_from time, date_to time); CREATE TABLE Student_Course_Registrations (student_id number, course_id number, registration_date time); CREATE TABLE Student_Course_Attendance (student_id number, course_id number, date_of_attendance time); CREATE TABLE Candidates (candidate_id number, candidate_details text); CREATE TABLE Candidate_Assessments (candidate_id number, qualification text, assessment_date time, asessment_outcome_code text);
What are the ids of all students who have attended at least one course?
SELECT student_id FROM student_course_attendance
easy
CREATE TABLE Addresses (address_id number, line_1 text, line_2 text, city text, zip_postcode text, state_province_county text, country text); CREATE TABLE People (person_id number, first_name text, middle_name text, last_name text, cell_mobile_number text, email_address text, login_name text, password text); CREATE TABLE Students (student_id number, student_details text); CREATE TABLE Courses (course_id text, course_name text, course_description text, other_details text); CREATE TABLE People_Addresses (person_address_id number, person_id number, address_id number, date_from time, date_to time); CREATE TABLE Student_Course_Registrations (student_id number, course_id number, registration_date time); CREATE TABLE Student_Course_Attendance (student_id number, course_id number, date_of_attendance time); CREATE TABLE Candidates (candidate_id number, candidate_details text); CREATE TABLE Candidate_Assessments (candidate_id number, qualification text, assessment_date time, asessment_outcome_code text);
What are the ids of all students for courses and what are the names of those courses?
SELECT T1.student_id , T2.course_name FROM student_course_registrations AS T1 JOIN courses AS T2 ON T1.course_id = T2.course_id
medium
CREATE TABLE Addresses (address_id number, line_1 text, line_2 text, city text, zip_postcode text, state_province_county text, country text); CREATE TABLE People (person_id number, first_name text, middle_name text, last_name text, cell_mobile_number text, email_address text, login_name text, password text); CREATE TABLE Students (student_id number, student_details text); CREATE TABLE Courses (course_id text, course_name text, course_description text, other_details text); CREATE TABLE People_Addresses (person_address_id number, person_id number, address_id number, date_from time, date_to time); CREATE TABLE Student_Course_Registrations (student_id number, course_id number, registration_date time); CREATE TABLE Student_Course_Attendance (student_id number, course_id number, date_of_attendance time); CREATE TABLE Candidates (candidate_id number, candidate_details text); CREATE TABLE Candidate_Assessments (candidate_id number, qualification text, assessment_date time, asessment_outcome_code text);
What is detail of the student who most recently registered course?
SELECT T2.student_details FROM student_course_registrations AS T1 JOIN students AS T2 ON T1.student_id = T2.student_id ORDER BY T1.registration_date DESC LIMIT 1
hard
CREATE TABLE Addresses (address_id number, line_1 text, line_2 text, city text, zip_postcode text, state_province_county text, country text); CREATE TABLE People (person_id number, first_name text, middle_name text, last_name text, cell_mobile_number text, email_address text, login_name text, password text); CREATE TABLE Students (student_id number, student_details text); CREATE TABLE Courses (course_id text, course_name text, course_description text, other_details text); CREATE TABLE People_Addresses (person_address_id number, person_id number, address_id number, date_from time, date_to time); CREATE TABLE Student_Course_Registrations (student_id number, course_id number, registration_date time); CREATE TABLE Student_Course_Attendance (student_id number, course_id number, date_of_attendance time); CREATE TABLE Candidates (candidate_id number, candidate_details text); CREATE TABLE Candidate_Assessments (candidate_id number, qualification text, assessment_date time, asessment_outcome_code text);
What details do we have on the students who registered for courses most recently?
SELECT T2.student_details FROM student_course_registrations AS T1 JOIN students AS T2 ON T1.student_id = T2.student_id ORDER BY T1.registration_date DESC LIMIT 1
hard
CREATE TABLE Addresses (address_id number, line_1 text, line_2 text, city text, zip_postcode text, state_province_county text, country text); CREATE TABLE People (person_id number, first_name text, middle_name text, last_name text, cell_mobile_number text, email_address text, login_name text, password text); CREATE TABLE Students (student_id number, student_details text); CREATE TABLE Courses (course_id text, course_name text, course_description text, other_details text); CREATE TABLE People_Addresses (person_address_id number, person_id number, address_id number, date_from time, date_to time); CREATE TABLE Student_Course_Registrations (student_id number, course_id number, registration_date time); CREATE TABLE Student_Course_Attendance (student_id number, course_id number, date_of_attendance time); CREATE TABLE Candidates (candidate_id number, candidate_details text); CREATE TABLE Candidate_Assessments (candidate_id number, qualification text, assessment_date time, asessment_outcome_code text);
How many students attend course English?
SELECT count(*) FROM courses AS T1 JOIN student_course_attendance AS T2 ON T1.course_id = T2.course_id WHERE T1.course_name = "English"
medium
CREATE TABLE Addresses (address_id number, line_1 text, line_2 text, city text, zip_postcode text, state_province_county text, country text); CREATE TABLE People (person_id number, first_name text, middle_name text, last_name text, cell_mobile_number text, email_address text, login_name text, password text); CREATE TABLE Students (student_id number, student_details text); CREATE TABLE Courses (course_id text, course_name text, course_description text, other_details text); CREATE TABLE People_Addresses (person_address_id number, person_id number, address_id number, date_from time, date_to time); CREATE TABLE Student_Course_Registrations (student_id number, course_id number, registration_date time); CREATE TABLE Student_Course_Attendance (student_id number, course_id number, date_of_attendance time); CREATE TABLE Candidates (candidate_id number, candidate_details text); CREATE TABLE Candidate_Assessments (candidate_id number, qualification text, assessment_date time, asessment_outcome_code text);
How many students are attending English courses?
SELECT count(*) FROM courses AS T1 JOIN student_course_attendance AS T2 ON T1.course_id = T2.course_id WHERE T1.course_name = "English"
medium
CREATE TABLE Addresses (address_id number, line_1 text, line_2 text, city text, zip_postcode text, state_province_county text, country text); CREATE TABLE People (person_id number, first_name text, middle_name text, last_name text, cell_mobile_number text, email_address text, login_name text, password text); CREATE TABLE Students (student_id number, student_details text); CREATE TABLE Courses (course_id text, course_name text, course_description text, other_details text); CREATE TABLE People_Addresses (person_address_id number, person_id number, address_id number, date_from time, date_to time); CREATE TABLE Student_Course_Registrations (student_id number, course_id number, registration_date time); CREATE TABLE Student_Course_Attendance (student_id number, course_id number, date_of_attendance time); CREATE TABLE Candidates (candidate_id number, candidate_details text); CREATE TABLE Candidate_Assessments (candidate_id number, qualification text, assessment_date time, asessment_outcome_code text);
How many courses do the student whose id is 171 attend?
SELECT count(*) FROM courses AS T1 JOIN student_course_attendance AS T2 ON T1.course_id = T2.course_id WHERE T2.student_id = 171
medium
CREATE TABLE Addresses (address_id number, line_1 text, line_2 text, city text, zip_postcode text, state_province_county text, country text); CREATE TABLE People (person_id number, first_name text, middle_name text, last_name text, cell_mobile_number text, email_address text, login_name text, password text); CREATE TABLE Students (student_id number, student_details text); CREATE TABLE Courses (course_id text, course_name text, course_description text, other_details text); CREATE TABLE People_Addresses (person_address_id number, person_id number, address_id number, date_from time, date_to time); CREATE TABLE Student_Course_Registrations (student_id number, course_id number, registration_date time); CREATE TABLE Student_Course_Attendance (student_id number, course_id number, date_of_attendance time); CREATE TABLE Candidates (candidate_id number, candidate_details text); CREATE TABLE Candidate_Assessments (candidate_id number, qualification text, assessment_date time, asessment_outcome_code text);
How many courses does the student with id 171 actually attend?
SELECT count(*) FROM courses AS T1 JOIN student_course_attendance AS T2 ON T1.course_id = T2.course_id WHERE T2.student_id = 171
medium
CREATE TABLE Addresses (address_id number, line_1 text, line_2 text, city text, zip_postcode text, state_province_county text, country text); CREATE TABLE People (person_id number, first_name text, middle_name text, last_name text, cell_mobile_number text, email_address text, login_name text, password text); CREATE TABLE Students (student_id number, student_details text); CREATE TABLE Courses (course_id text, course_name text, course_description text, other_details text); CREATE TABLE People_Addresses (person_address_id number, person_id number, address_id number, date_from time, date_to time); CREATE TABLE Student_Course_Registrations (student_id number, course_id number, registration_date time); CREATE TABLE Student_Course_Attendance (student_id number, course_id number, date_of_attendance time); CREATE TABLE Candidates (candidate_id number, candidate_details text); CREATE TABLE Candidate_Assessments (candidate_id number, qualification text, assessment_date time, asessment_outcome_code text);
Find id of the candidate whose email is stanley.monahan@example.org?
SELECT T2.candidate_id FROM people AS T1 JOIN candidates AS T2 ON T1.person_id = T2.candidate_id WHERE T1.email_address = "stanley.monahan@example.org"
medium
CREATE TABLE Addresses (address_id number, line_1 text, line_2 text, city text, zip_postcode text, state_province_county text, country text); CREATE TABLE People (person_id number, first_name text, middle_name text, last_name text, cell_mobile_number text, email_address text, login_name text, password text); CREATE TABLE Students (student_id number, student_details text); CREATE TABLE Courses (course_id text, course_name text, course_description text, other_details text); CREATE TABLE People_Addresses (person_address_id number, person_id number, address_id number, date_from time, date_to time); CREATE TABLE Student_Course_Registrations (student_id number, course_id number, registration_date time); CREATE TABLE Student_Course_Attendance (student_id number, course_id number, date_of_attendance time); CREATE TABLE Candidates (candidate_id number, candidate_details text); CREATE TABLE Candidate_Assessments (candidate_id number, qualification text, assessment_date time, asessment_outcome_code text);
What is the id of the candidate whose email is stanley.monahan@example.org?
SELECT T2.candidate_id FROM people AS T1 JOIN candidates AS T2 ON T1.person_id = T2.candidate_id WHERE T1.email_address = "stanley.monahan@example.org"
medium
CREATE TABLE Addresses (address_id number, line_1 text, line_2 text, city text, zip_postcode text, state_province_county text, country text); CREATE TABLE People (person_id number, first_name text, middle_name text, last_name text, cell_mobile_number text, email_address text, login_name text, password text); CREATE TABLE Students (student_id number, student_details text); CREATE TABLE Courses (course_id text, course_name text, course_description text, other_details text); CREATE TABLE People_Addresses (person_address_id number, person_id number, address_id number, date_from time, date_to time); CREATE TABLE Student_Course_Registrations (student_id number, course_id number, registration_date time); CREATE TABLE Student_Course_Attendance (student_id number, course_id number, date_of_attendance time); CREATE TABLE Candidates (candidate_id number, candidate_details text); CREATE TABLE Candidate_Assessments (candidate_id number, qualification text, assessment_date time, asessment_outcome_code text);
Find id of the candidate who most recently accessed the course?
SELECT candidate_id FROM candidate_assessments ORDER BY assessment_date DESC LIMIT 1
medium
CREATE TABLE Addresses (address_id number, line_1 text, line_2 text, city text, zip_postcode text, state_province_county text, country text); CREATE TABLE People (person_id number, first_name text, middle_name text, last_name text, cell_mobile_number text, email_address text, login_name text, password text); CREATE TABLE Students (student_id number, student_details text); CREATE TABLE Courses (course_id text, course_name text, course_description text, other_details text); CREATE TABLE People_Addresses (person_address_id number, person_id number, address_id number, date_from time, date_to time); CREATE TABLE Student_Course_Registrations (student_id number, course_id number, registration_date time); CREATE TABLE Student_Course_Attendance (student_id number, course_id number, date_of_attendance time); CREATE TABLE Candidates (candidate_id number, candidate_details text); CREATE TABLE Candidate_Assessments (candidate_id number, qualification text, assessment_date time, asessment_outcome_code text);
What is the id of the candidate who most recently accessed the course?
SELECT candidate_id FROM candidate_assessments ORDER BY assessment_date DESC LIMIT 1
medium
CREATE TABLE Addresses (address_id number, line_1 text, line_2 text, city text, zip_postcode text, state_province_county text, country text); CREATE TABLE People (person_id number, first_name text, middle_name text, last_name text, cell_mobile_number text, email_address text, login_name text, password text); CREATE TABLE Students (student_id number, student_details text); CREATE TABLE Courses (course_id text, course_name text, course_description text, other_details text); CREATE TABLE People_Addresses (person_address_id number, person_id number, address_id number, date_from time, date_to time); CREATE TABLE Student_Course_Registrations (student_id number, course_id number, registration_date time); CREATE TABLE Student_Course_Attendance (student_id number, course_id number, date_of_attendance time); CREATE TABLE Candidates (candidate_id number, candidate_details text); CREATE TABLE Candidate_Assessments (candidate_id number, qualification text, assessment_date time, asessment_outcome_code text);
What is detail of the student who registered the most number of courses?
SELECT T1.student_details FROM students AS T1 JOIN student_course_registrations AS T2 ON T1.student_id = T2.student_id GROUP BY T1.student_id ORDER BY count(*) DESC LIMIT 1
extra
CREATE TABLE Addresses (address_id number, line_1 text, line_2 text, city text, zip_postcode text, state_province_county text, country text); CREATE TABLE People (person_id number, first_name text, middle_name text, last_name text, cell_mobile_number text, email_address text, login_name text, password text); CREATE TABLE Students (student_id number, student_details text); CREATE TABLE Courses (course_id text, course_name text, course_description text, other_details text); CREATE TABLE People_Addresses (person_address_id number, person_id number, address_id number, date_from time, date_to time); CREATE TABLE Student_Course_Registrations (student_id number, course_id number, registration_date time); CREATE TABLE Student_Course_Attendance (student_id number, course_id number, date_of_attendance time); CREATE TABLE Candidates (candidate_id number, candidate_details text); CREATE TABLE Candidate_Assessments (candidate_id number, qualification text, assessment_date time, asessment_outcome_code text);
What are the details of the student who registered for the most number of courses?
SELECT T1.student_details FROM students AS T1 JOIN student_course_registrations AS T2 ON T1.student_id = T2.student_id GROUP BY T1.student_id ORDER BY count(*) DESC LIMIT 1
extra
CREATE TABLE Addresses (address_id number, line_1 text, line_2 text, city text, zip_postcode text, state_province_county text, country text); CREATE TABLE People (person_id number, first_name text, middle_name text, last_name text, cell_mobile_number text, email_address text, login_name text, password text); CREATE TABLE Students (student_id number, student_details text); CREATE TABLE Courses (course_id text, course_name text, course_description text, other_details text); CREATE TABLE People_Addresses (person_address_id number, person_id number, address_id number, date_from time, date_to time); CREATE TABLE Student_Course_Registrations (student_id number, course_id number, registration_date time); CREATE TABLE Student_Course_Attendance (student_id number, course_id number, date_of_attendance time); CREATE TABLE Candidates (candidate_id number, candidate_details text); CREATE TABLE Candidate_Assessments (candidate_id number, qualification text, assessment_date time, asessment_outcome_code text);
List the id of students who registered some courses and the number of their registered courses?
SELECT T1.student_id , count(*) FROM students AS T1 JOIN student_course_registrations AS T2 ON T1.student_id = T2.student_id GROUP BY T1.student_id
medium
CREATE TABLE Addresses (address_id number, line_1 text, line_2 text, city text, zip_postcode text, state_province_county text, country text); CREATE TABLE People (person_id number, first_name text, middle_name text, last_name text, cell_mobile_number text, email_address text, login_name text, password text); CREATE TABLE Students (student_id number, student_details text); CREATE TABLE Courses (course_id text, course_name text, course_description text, other_details text); CREATE TABLE People_Addresses (person_address_id number, person_id number, address_id number, date_from time, date_to time); CREATE TABLE Student_Course_Registrations (student_id number, course_id number, registration_date time); CREATE TABLE Student_Course_Attendance (student_id number, course_id number, date_of_attendance time); CREATE TABLE Candidates (candidate_id number, candidate_details text); CREATE TABLE Candidate_Assessments (candidate_id number, qualification text, assessment_date time, asessment_outcome_code text);
For every student who is registered for some course, how many courses are they registered for?
SELECT T1.student_id , count(*) FROM students AS T1 JOIN student_course_registrations AS T2 ON T1.student_id = T2.student_id GROUP BY T1.student_id
medium
CREATE TABLE Addresses (address_id number, line_1 text, line_2 text, city text, zip_postcode text, state_province_county text, country text); CREATE TABLE People (person_id number, first_name text, middle_name text, last_name text, cell_mobile_number text, email_address text, login_name text, password text); CREATE TABLE Students (student_id number, student_details text); CREATE TABLE Courses (course_id text, course_name text, course_description text, other_details text); CREATE TABLE People_Addresses (person_address_id number, person_id number, address_id number, date_from time, date_to time); CREATE TABLE Student_Course_Registrations (student_id number, course_id number, registration_date time); CREATE TABLE Student_Course_Attendance (student_id number, course_id number, date_of_attendance time); CREATE TABLE Candidates (candidate_id number, candidate_details text); CREATE TABLE Candidate_Assessments (candidate_id number, qualification text, assessment_date time, asessment_outcome_code text);
How many registed students do each course have? List course name and the number of their registered students?
SELECT T3.course_name , count(*) FROM students AS T1 JOIN student_course_registrations AS T2 ON T1.student_id = T2.student_id JOIN courses AS T3 ON T2.course_id = T3.course_id GROUP BY T2.course_id
hard
CREATE TABLE Addresses (address_id number, line_1 text, line_2 text, city text, zip_postcode text, state_province_county text, country text); CREATE TABLE People (person_id number, first_name text, middle_name text, last_name text, cell_mobile_number text, email_address text, login_name text, password text); CREATE TABLE Students (student_id number, student_details text); CREATE TABLE Courses (course_id text, course_name text, course_description text, other_details text); CREATE TABLE People_Addresses (person_address_id number, person_id number, address_id number, date_from time, date_to time); CREATE TABLE Student_Course_Registrations (student_id number, course_id number, registration_date time); CREATE TABLE Student_Course_Attendance (student_id number, course_id number, date_of_attendance time); CREATE TABLE Candidates (candidate_id number, candidate_details text); CREATE TABLE Candidate_Assessments (candidate_id number, qualification text, assessment_date time, asessment_outcome_code text);
For each course id, how many students are registered and what are the course names?
SELECT T3.course_name , count(*) FROM students AS T1 JOIN student_course_registrations AS T2 ON T1.student_id = T2.student_id JOIN courses AS T3 ON T2.course_id = T3.course_id GROUP BY T2.course_id
hard
CREATE TABLE Addresses (address_id number, line_1 text, line_2 text, city text, zip_postcode text, state_province_county text, country text); CREATE TABLE People (person_id number, first_name text, middle_name text, last_name text, cell_mobile_number text, email_address text, login_name text, password text); CREATE TABLE Students (student_id number, student_details text); CREATE TABLE Courses (course_id text, course_name text, course_description text, other_details text); CREATE TABLE People_Addresses (person_address_id number, person_id number, address_id number, date_from time, date_to time); CREATE TABLE Student_Course_Registrations (student_id number, course_id number, registration_date time); CREATE TABLE Student_Course_Attendance (student_id number, course_id number, date_of_attendance time); CREATE TABLE Candidates (candidate_id number, candidate_details text); CREATE TABLE Candidate_Assessments (candidate_id number, qualification text, assessment_date time, asessment_outcome_code text);
Find id of candidates whose assessment code is "Pass"?
SELECT candidate_id FROM candidate_assessments WHERE asessment_outcome_code = "Pass"
easy
CREATE TABLE Addresses (address_id number, line_1 text, line_2 text, city text, zip_postcode text, state_province_county text, country text); CREATE TABLE People (person_id number, first_name text, middle_name text, last_name text, cell_mobile_number text, email_address text, login_name text, password text); CREATE TABLE Students (student_id number, student_details text); CREATE TABLE Courses (course_id text, course_name text, course_description text, other_details text); CREATE TABLE People_Addresses (person_address_id number, person_id number, address_id number, date_from time, date_to time); CREATE TABLE Student_Course_Registrations (student_id number, course_id number, registration_date time); CREATE TABLE Student_Course_Attendance (student_id number, course_id number, date_of_attendance time); CREATE TABLE Candidates (candidate_id number, candidate_details text); CREATE TABLE Candidate_Assessments (candidate_id number, qualification text, assessment_date time, asessment_outcome_code text);
What are the ids of the candidates that have an outcome code of Pass?
SELECT candidate_id FROM candidate_assessments WHERE asessment_outcome_code = "Pass"
easy
CREATE TABLE Addresses (address_id number, line_1 text, line_2 text, city text, zip_postcode text, state_province_county text, country text); CREATE TABLE People (person_id number, first_name text, middle_name text, last_name text, cell_mobile_number text, email_address text, login_name text, password text); CREATE TABLE Students (student_id number, student_details text); CREATE TABLE Courses (course_id text, course_name text, course_description text, other_details text); CREATE TABLE People_Addresses (person_address_id number, person_id number, address_id number, date_from time, date_to time); CREATE TABLE Student_Course_Registrations (student_id number, course_id number, registration_date time); CREATE TABLE Student_Course_Attendance (student_id number, course_id number, date_of_attendance time); CREATE TABLE Candidates (candidate_id number, candidate_details text); CREATE TABLE Candidate_Assessments (candidate_id number, qualification text, assessment_date time, asessment_outcome_code text);
Find the cell mobile number of the candidates whose assessment code is "Fail"?
SELECT T3.cell_mobile_number FROM candidates AS T1 JOIN candidate_assessments AS T2 ON T1.candidate_id = T2.candidate_id JOIN people AS T3 ON T1.candidate_id = T3.person_id WHERE T2.asessment_outcome_code = "Fail"
hard
CREATE TABLE Addresses (address_id number, line_1 text, line_2 text, city text, zip_postcode text, state_province_county text, country text); CREATE TABLE People (person_id number, first_name text, middle_name text, last_name text, cell_mobile_number text, email_address text, login_name text, password text); CREATE TABLE Students (student_id number, student_details text); CREATE TABLE Courses (course_id text, course_name text, course_description text, other_details text); CREATE TABLE People_Addresses (person_address_id number, person_id number, address_id number, date_from time, date_to time); CREATE TABLE Student_Course_Registrations (student_id number, course_id number, registration_date time); CREATE TABLE Student_Course_Attendance (student_id number, course_id number, date_of_attendance time); CREATE TABLE Candidates (candidate_id number, candidate_details text); CREATE TABLE Candidate_Assessments (candidate_id number, qualification text, assessment_date time, asessment_outcome_code text);
What are the cell phone numbers of the candidates that received an assessment code of "Fail"?
SELECT T3.cell_mobile_number FROM candidates AS T1 JOIN candidate_assessments AS T2 ON T1.candidate_id = T2.candidate_id JOIN people AS T3 ON T1.candidate_id = T3.person_id WHERE T2.asessment_outcome_code = "Fail"
hard
CREATE TABLE Addresses (address_id number, line_1 text, line_2 text, city text, zip_postcode text, state_province_county text, country text); CREATE TABLE People (person_id number, first_name text, middle_name text, last_name text, cell_mobile_number text, email_address text, login_name text, password text); CREATE TABLE Students (student_id number, student_details text); CREATE TABLE Courses (course_id text, course_name text, course_description text, other_details text); CREATE TABLE People_Addresses (person_address_id number, person_id number, address_id number, date_from time, date_to time); CREATE TABLE Student_Course_Registrations (student_id number, course_id number, registration_date time); CREATE TABLE Student_Course_Attendance (student_id number, course_id number, date_of_attendance time); CREATE TABLE Candidates (candidate_id number, candidate_details text); CREATE TABLE Candidate_Assessments (candidate_id number, qualification text, assessment_date time, asessment_outcome_code text);
What are the id of students who registered course 301?
SELECT student_id FROM student_course_attendance WHERE course_id = 301
easy
CREATE TABLE Addresses (address_id number, line_1 text, line_2 text, city text, zip_postcode text, state_province_county text, country text); CREATE TABLE People (person_id number, first_name text, middle_name text, last_name text, cell_mobile_number text, email_address text, login_name text, password text); CREATE TABLE Students (student_id number, student_details text); CREATE TABLE Courses (course_id text, course_name text, course_description text, other_details text); CREATE TABLE People_Addresses (person_address_id number, person_id number, address_id number, date_from time, date_to time); CREATE TABLE Student_Course_Registrations (student_id number, course_id number, registration_date time); CREATE TABLE Student_Course_Attendance (student_id number, course_id number, date_of_attendance time); CREATE TABLE Candidates (candidate_id number, candidate_details text); CREATE TABLE Candidate_Assessments (candidate_id number, qualification text, assessment_date time, asessment_outcome_code text);
What are the ids of the students who registered for course 301?
SELECT student_id FROM student_course_attendance WHERE course_id = 301
easy
CREATE TABLE Addresses (address_id number, line_1 text, line_2 text, city text, zip_postcode text, state_province_county text, country text); CREATE TABLE People (person_id number, first_name text, middle_name text, last_name text, cell_mobile_number text, email_address text, login_name text, password text); CREATE TABLE Students (student_id number, student_details text); CREATE TABLE Courses (course_id text, course_name text, course_description text, other_details text); CREATE TABLE People_Addresses (person_address_id number, person_id number, address_id number, date_from time, date_to time); CREATE TABLE Student_Course_Registrations (student_id number, course_id number, registration_date time); CREATE TABLE Student_Course_Attendance (student_id number, course_id number, date_of_attendance time); CREATE TABLE Candidates (candidate_id number, candidate_details text); CREATE TABLE Candidate_Assessments (candidate_id number, qualification text, assessment_date time, asessment_outcome_code text);
What is the id of the student who most recently registered course 301?
SELECT student_id FROM student_course_attendance WHERE course_id = 301 ORDER BY date_of_attendance DESC LIMIT 1
hard
CREATE TABLE Addresses (address_id number, line_1 text, line_2 text, city text, zip_postcode text, state_province_county text, country text); CREATE TABLE People (person_id number, first_name text, middle_name text, last_name text, cell_mobile_number text, email_address text, login_name text, password text); CREATE TABLE Students (student_id number, student_details text); CREATE TABLE Courses (course_id text, course_name text, course_description text, other_details text); CREATE TABLE People_Addresses (person_address_id number, person_id number, address_id number, date_from time, date_to time); CREATE TABLE Student_Course_Registrations (student_id number, course_id number, registration_date time); CREATE TABLE Student_Course_Attendance (student_id number, course_id number, date_of_attendance time); CREATE TABLE Candidates (candidate_id number, candidate_details text); CREATE TABLE Candidate_Assessments (candidate_id number, qualification text, assessment_date time, asessment_outcome_code text);
What are the ids of the students who registered for course 301 most recently?
SELECT student_id FROM student_course_attendance WHERE course_id = 301 ORDER BY date_of_attendance DESC LIMIT 1
hard
CREATE TABLE Addresses (address_id number, line_1 text, line_2 text, city text, zip_postcode text, state_province_county text, country text); CREATE TABLE People (person_id number, first_name text, middle_name text, last_name text, cell_mobile_number text, email_address text, login_name text, password text); CREATE TABLE Students (student_id number, student_details text); CREATE TABLE Courses (course_id text, course_name text, course_description text, other_details text); CREATE TABLE People_Addresses (person_address_id number, person_id number, address_id number, date_from time, date_to time); CREATE TABLE Student_Course_Registrations (student_id number, course_id number, registration_date time); CREATE TABLE Student_Course_Attendance (student_id number, course_id number, date_of_attendance time); CREATE TABLE Candidates (candidate_id number, candidate_details text); CREATE TABLE Candidate_Assessments (candidate_id number, qualification text, assessment_date time, asessment_outcome_code text);
Find distinct cities of addresses of people?
SELECT DISTINCT T1.city FROM addresses AS T1 JOIN people_addresses AS T2 ON T1.address_id = T2.address_id
easy
CREATE TABLE Addresses (address_id number, line_1 text, line_2 text, city text, zip_postcode text, state_province_county text, country text); CREATE TABLE People (person_id number, first_name text, middle_name text, last_name text, cell_mobile_number text, email_address text, login_name text, password text); CREATE TABLE Students (student_id number, student_details text); CREATE TABLE Courses (course_id text, course_name text, course_description text, other_details text); CREATE TABLE People_Addresses (person_address_id number, person_id number, address_id number, date_from time, date_to time); CREATE TABLE Student_Course_Registrations (student_id number, course_id number, registration_date time); CREATE TABLE Student_Course_Attendance (student_id number, course_id number, date_of_attendance time); CREATE TABLE Candidates (candidate_id number, candidate_details text); CREATE TABLE Candidate_Assessments (candidate_id number, qualification text, assessment_date time, asessment_outcome_code text);
What are the different cities where people live?
SELECT DISTINCT T1.city FROM addresses AS T1 JOIN people_addresses AS T2 ON T1.address_id = T2.address_id
easy
CREATE TABLE Addresses (address_id number, line_1 text, line_2 text, city text, zip_postcode text, state_province_county text, country text); CREATE TABLE People (person_id number, first_name text, middle_name text, last_name text, cell_mobile_number text, email_address text, login_name text, password text); CREATE TABLE Students (student_id number, student_details text); CREATE TABLE Courses (course_id text, course_name text, course_description text, other_details text); CREATE TABLE People_Addresses (person_address_id number, person_id number, address_id number, date_from time, date_to time); CREATE TABLE Student_Course_Registrations (student_id number, course_id number, registration_date time); CREATE TABLE Student_Course_Attendance (student_id number, course_id number, date_of_attendance time); CREATE TABLE Candidates (candidate_id number, candidate_details text); CREATE TABLE Candidate_Assessments (candidate_id number, qualification text, assessment_date time, asessment_outcome_code text);
Find distinct cities of address of students?
SELECT DISTINCT T1.city FROM addresses AS T1 JOIN people_addresses AS T2 ON T1.address_id = T2.address_id JOIN students AS T3 ON T2.person_id = T3.student_id
medium
CREATE TABLE Addresses (address_id number, line_1 text, line_2 text, city text, zip_postcode text, state_province_county text, country text); CREATE TABLE People (person_id number, first_name text, middle_name text, last_name text, cell_mobile_number text, email_address text, login_name text, password text); CREATE TABLE Students (student_id number, student_details text); CREATE TABLE Courses (course_id text, course_name text, course_description text, other_details text); CREATE TABLE People_Addresses (person_address_id number, person_id number, address_id number, date_from time, date_to time); CREATE TABLE Student_Course_Registrations (student_id number, course_id number, registration_date time); CREATE TABLE Student_Course_Attendance (student_id number, course_id number, date_of_attendance time); CREATE TABLE Candidates (candidate_id number, candidate_details text); CREATE TABLE Candidate_Assessments (candidate_id number, qualification text, assessment_date time, asessment_outcome_code text);
What are the different cities where students live?
SELECT DISTINCT T1.city FROM addresses AS T1 JOIN people_addresses AS T2 ON T1.address_id = T2.address_id JOIN students AS T3 ON T2.person_id = T3.student_id
medium
CREATE TABLE Addresses (address_id number, line_1 text, line_2 text, city text, zip_postcode text, state_province_county text, country text); CREATE TABLE People (person_id number, first_name text, middle_name text, last_name text, cell_mobile_number text, email_address text, login_name text, password text); CREATE TABLE Students (student_id number, student_details text); CREATE TABLE Courses (course_id text, course_name text, course_description text, other_details text); CREATE TABLE People_Addresses (person_address_id number, person_id number, address_id number, date_from time, date_to time); CREATE TABLE Student_Course_Registrations (student_id number, course_id number, registration_date time); CREATE TABLE Student_Course_Attendance (student_id number, course_id number, date_of_attendance time); CREATE TABLE Candidates (candidate_id number, candidate_details text); CREATE TABLE Candidate_Assessments (candidate_id number, qualification text, assessment_date time, asessment_outcome_code text);
List the names of courses in alphabetical order?
SELECT course_name FROM courses ORDER BY course_name
easy
CREATE TABLE Addresses (address_id number, line_1 text, line_2 text, city text, zip_postcode text, state_province_county text, country text); CREATE TABLE People (person_id number, first_name text, middle_name text, last_name text, cell_mobile_number text, email_address text, login_name text, password text); CREATE TABLE Students (student_id number, student_details text); CREATE TABLE Courses (course_id text, course_name text, course_description text, other_details text); CREATE TABLE People_Addresses (person_address_id number, person_id number, address_id number, date_from time, date_to time); CREATE TABLE Student_Course_Registrations (student_id number, course_id number, registration_date time); CREATE TABLE Student_Course_Attendance (student_id number, course_id number, date_of_attendance time); CREATE TABLE Candidates (candidate_id number, candidate_details text); CREATE TABLE Candidate_Assessments (candidate_id number, qualification text, assessment_date time, asessment_outcome_code text);
What are the names of the courses in alphabetical order?
SELECT course_name FROM courses ORDER BY course_name
easy
CREATE TABLE Addresses (address_id number, line_1 text, line_2 text, city text, zip_postcode text, state_province_county text, country text); CREATE TABLE People (person_id number, first_name text, middle_name text, last_name text, cell_mobile_number text, email_address text, login_name text, password text); CREATE TABLE Students (student_id number, student_details text); CREATE TABLE Courses (course_id text, course_name text, course_description text, other_details text); CREATE TABLE People_Addresses (person_address_id number, person_id number, address_id number, date_from time, date_to time); CREATE TABLE Student_Course_Registrations (student_id number, course_id number, registration_date time); CREATE TABLE Student_Course_Attendance (student_id number, course_id number, date_of_attendance time); CREATE TABLE Candidates (candidate_id number, candidate_details text); CREATE TABLE Candidate_Assessments (candidate_id number, qualification text, assessment_date time, asessment_outcome_code text);
List the first names of people in alphabetical order?
SELECT first_name FROM people ORDER BY first_name
easy
CREATE TABLE Addresses (address_id number, line_1 text, line_2 text, city text, zip_postcode text, state_province_county text, country text); CREATE TABLE People (person_id number, first_name text, middle_name text, last_name text, cell_mobile_number text, email_address text, login_name text, password text); CREATE TABLE Students (student_id number, student_details text); CREATE TABLE Courses (course_id text, course_name text, course_description text, other_details text); CREATE TABLE People_Addresses (person_address_id number, person_id number, address_id number, date_from time, date_to time); CREATE TABLE Student_Course_Registrations (student_id number, course_id number, registration_date time); CREATE TABLE Student_Course_Attendance (student_id number, course_id number, date_of_attendance time); CREATE TABLE Candidates (candidate_id number, candidate_details text); CREATE TABLE Candidate_Assessments (candidate_id number, qualification text, assessment_date time, asessment_outcome_code text);
What are the first names of the people in alphabetical order?
SELECT first_name FROM people ORDER BY first_name
easy
CREATE TABLE Addresses (address_id number, line_1 text, line_2 text, city text, zip_postcode text, state_province_county text, country text); CREATE TABLE People (person_id number, first_name text, middle_name text, last_name text, cell_mobile_number text, email_address text, login_name text, password text); CREATE TABLE Students (student_id number, student_details text); CREATE TABLE Courses (course_id text, course_name text, course_description text, other_details text); CREATE TABLE People_Addresses (person_address_id number, person_id number, address_id number, date_from time, date_to time); CREATE TABLE Student_Course_Registrations (student_id number, course_id number, registration_date time); CREATE TABLE Student_Course_Attendance (student_id number, course_id number, date_of_attendance time); CREATE TABLE Candidates (candidate_id number, candidate_details text); CREATE TABLE Candidate_Assessments (candidate_id number, qualification text, assessment_date time, asessment_outcome_code text);
What are the id of students who registered courses or attended courses?
SELECT student_id FROM student_course_registrations UNION SELECT student_id FROM student_course_attendance
hard