Schema:
CREATE TABLE 	College 
  ( cName   	varchar(20) NOT NULL,
    state   	varchar(2),
    enr     	numeric(5,0),
    PRIMARY KEY (cName)
  );
CREATE TABLE 	Player
  ( pID			numeric(5,0) NOT NULL,
  	pName   	varchar(20),
    yCard   	varchar(3),
    HS      	numeric(5,0),
    PRIMARY KEY (pID)
  );
CREATE TABLE 	Tryout
  ( pID			numeric(5,0),
  	cName   	varchar(20),
    pPos    	varchar(8),
    decision    varchar(3),
    PRIMARY KEY (pID, cName),
    FOREIGN KEY (pID) REFERENCES Player(pID),
    FOREIGN KEY (cName) REFERENCES College(cName)
  );

Question: What is the total enrollment number of all colleges?
SQL:
SELECT sum(enr) FROM College

Question: How many students are enrolled in college?
SQL:
SELECT sum(enr) FROM College

Question: What is the average enrollment number?
SQL:
SELECT avg(enr) FROM College

Question: How many students, on average, does each college have enrolled?
SQL:
SELECT avg(enr) FROM College

Question: How many colleges in total?
SQL:
SELECT count(*) FROM College

Question: How many different colleges are there?
SQL:
SELECT count(*) FROM College

Question: How many players have more than 1000 hours of training?
SQL:
SELECT count(*) FROM Player WHERE HS  >  1000

Question: How many different players trained for more than 1000 hours?
SQL:
SELECT count(*) FROM Player WHERE HS  >  1000

Question: How many colleges has more than 15000 students?
SQL:
SELECT count(*) FROM College WHERE enr  >  15000

Question: What is the number of colleges with a student population greater than 15000?
SQL:
SELECT count(*) FROM College WHERE enr  >  15000

Question: What is the average training hours of all players?
SQL:
SELECT avg(HS) FROM Player

Question: How many hours do the players train on average?
SQL:
SELECT avg(HS) FROM Player

Question: Find the name and training hours of players whose hours are below 1500.
SQL:
SELECT pName ,  HS FROM Player WHERE HS  <  1500

Question: What are the names and number of hours spent training for each player who trains for less than 1500 hours?
SQL:
SELECT pName ,  HS FROM Player WHERE HS  <  1500

Question: How many different colleges do attend the tryout test?
SQL:
SELECT count(DISTINCT cName) FROM tryout

Question: How many different colleges were represented at tryouts?
SQL:
SELECT count(DISTINCT cName) FROM tryout

Question: What are the unique types of player positions in the tryout?
SQL:
SELECT count(DISTINCT pPos) FROM tryout

Question: What are the different types of player positions?
SQL:
SELECT count(DISTINCT pPos) FROM tryout

Question: How many students got accepted after the tryout?
SQL:
SELECT count(*) FROM tryout WHERE decision  =  'yes'

Question: How many students received a yes from tryouts?
SQL:
SELECT count(*) FROM tryout WHERE decision  =  'yes'

Question: How many students whose are playing the role of goalie?
SQL:
SELECT count(*) FROM tryout WHERE pPos  =  'goalie'

Question: What is the number of students playing as a goalie?
SQL:
SELECT count(*) FROM tryout WHERE pPos  =  'goalie'

Question: Find the max, average and min training hours of all players.
SQL:
SELECT avg(HS) ,  max(HS) ,  min(HS) FROM Player

Question: What is the average, maximum, and minimum for the number of hours spent training?
SQL:
SELECT avg(HS) ,  max(HS) ,  min(HS) FROM Player

Question: What is average enrollment of colleges in the state FL?
SQL:
SELECT avg(enr) FROM College WHERE state  =  'FL'

Question: What is average number of students enrolled in Florida colleges?
SQL:
SELECT avg(enr) FROM College WHERE state  =  'FL'

Question: What are the names of players whose training hours is between 500 and 1500?
SQL:
SELECT pName FROM Player WHERE HS BETWEEN 500 AND 1500

Question: What are the names of players who train between 500 and 1500 hours?
SQL:
SELECT pName FROM Player WHERE HS BETWEEN 500 AND 1500

Question: Find the players whose names contain letter 'a'.
SQL:
SELECT DISTINCT pName FROM Player WHERE pName LIKE '%a%'

Question: Who are the players that have names containing the letter a?
SQL:
SELECT DISTINCT pName FROM Player WHERE pName LIKE '%a%'

Question: Find the name, enrollment of the colleges whose size is bigger than 10000 and location is in state LA.
SQL:
SELECT cName ,  enr FROM College WHERE enr  >  10000 AND state = "LA"

Question: What are the names and enrollment numbers for colleges that have more than 10000 enrolled and are located in Louisiana?
SQL:
SELECT cName ,  enr FROM College WHERE enr  >  10000 AND state = "LA"

Question: List all information about college sorted by enrollment number in the ascending order.
SQL:
SELECT * FROM College ORDER BY enr

Question: What information do you have on colleges sorted by increasing enrollment numbers?
SQL:
SELECT * FROM College ORDER BY enr

Question: List the name of the colleges whose enrollment is greater 18000 sorted by the college's name.
SQL:
SELECT cName FROM College WHERE enr  >  18000 ORDER BY cName

Question: What is the name of every college in alphabetical order that has more than 18000 students enrolled?
SQL:
SELECT cName FROM College WHERE enr  >  18000 ORDER BY cName

Question: Find the name of players whose card is yes in the descending order of training hours.
SQL:
SELECT pName FROM Player WHERE yCard  =  'yes' ORDER BY HS DESC

Question: What are the name of the players who received a card in descending order of the hours of training?
SQL:
SELECT pName FROM Player WHERE yCard  =  'yes' ORDER BY HS DESC

Question: Find the name of different colleges involved in the tryout in alphabetical order.
SQL:
SELECT DISTINCT cName FROM tryout ORDER BY cName

Question: What are the different names of the colleges involved in the tryout in alphabetical order?
SQL:
SELECT DISTINCT cName FROM tryout ORDER BY cName

Question: Which position is most popular among players in the tryout?
SQL:
SELECT pPos FROM tryout GROUP BY pPos ORDER BY count(*) DESC LIMIT 1

Question: What was the most popular position at tryouts?
SQL:
SELECT pPos FROM tryout GROUP BY pPos ORDER BY count(*) DESC LIMIT 1

Question: Find the number of students who participate in the tryout for each college ordered by descending count.
SQL:
SELECT count(*) ,  cName FROM tryout GROUP BY cName ORDER BY count(*) DESC

Question: How many students participated in tryouts for each college by descennding count?
SQL:
SELECT count(*) ,  cName FROM tryout GROUP BY cName ORDER BY count(*) DESC

Question: What is minimum hours of the students playing in different position?
SQL:
SELECT min(T2.HS) ,   T1.pPos FROM tryout AS T1 JOIN player AS T2 ON T1.pID  =  T2.pID GROUP BY T1.pPos

Question: For each position, what is the minimum time students spent practicing?
SQL:
SELECT min(T2.HS) ,   T1.pPos FROM tryout AS T1 JOIN player AS T2 ON T1.pID  =  T2.pID GROUP BY T1.pPos

Question: What are the names of schools with the top 3 largest size?
SQL:
SELECT cName FROM college ORDER BY enr DESC LIMIT 3

Question: What are the names of the schools with the top 3 largest class sizes?
SQL:
SELECT cName FROM college ORDER BY enr DESC LIMIT 3

Question: What is the name of school that has the smallest enrollment in each state?
SQL:
SELECT cName ,  state ,  min(enr) FROM college GROUP BY state

Question: What is the name of the school with smallest enrollment size per state?
SQL:
SELECT cName ,  state ,  min(enr) FROM college GROUP BY state

Question: Find the states where have some college students in tryout.
SQL:
SELECT DISTINCT state FROM college AS T1 JOIN tryout AS T2 ON T1.cName  =  T2.cName

Question: What are the different states that have students trying out?
SQL:
SELECT DISTINCT state FROM college AS T1 JOIN tryout AS T2 ON T1.cName  =  T2.cName

Question: Find the states where have some college students in tryout and their decisions are yes.
SQL:
SELECT DISTINCT T1.state FROM college AS T1 JOIN tryout AS T2 ON T1.cName  =  T2.cName WHERE T2.decision  =  'yes'

Question: What are the different states that had students successfully try out?
SQL:
SELECT DISTINCT T1.state FROM college AS T1 JOIN tryout AS T2 ON T1.cName  =  T2.cName WHERE T2.decision  =  'yes'

Question: Find the name and college of students whose decisions are yes in the tryout.
SQL:
SELECT T1.pName ,  T2.cName FROM player AS T1 JOIN tryout AS T2 ON T1.pID  =  T2.pID WHERE T2.decision  =  'yes'

Question: What are the names of all the players who received a yes during tryouts, and also what are the names of their colleges?
SQL:
SELECT T1.pName ,  T2.cName FROM player AS T1 JOIN tryout AS T2 ON T1.pID  =  T2.pID WHERE T2.decision  =  'yes'

Question: Find the name of all students who were in the tryout sorted in alphabetic order.
SQL:
SELECT T1.pName FROM player AS T1 JOIN tryout AS T2 ON T1.pID  =  T2.pID ORDER BY T1.pName

Question: What are the names of all students who tried out in alphabetical order?
SQL:
SELECT T1.pName FROM player AS T1 JOIN tryout AS T2 ON T1.pID  =  T2.pID ORDER BY T1.pName

Question: Find the name and hours of the students whose tryout decision is yes.
SQL:
SELECT T1.pName ,  T1.HS FROM player AS T1 JOIN tryout AS T2 ON T1.pID  =  T2.pID WHERE T2.decision  =  'yes'

Question: What are the names and hours spent practicing of every student who received a yes at tryouts?
SQL:
SELECT T1.pName ,  T1.HS FROM player AS T1 JOIN tryout AS T2 ON T1.pID  =  T2.pID WHERE T2.decision  =  'yes'

Question: Find the states of the colleges that have students in the tryout who played in striker position.
SQL:
SELECT T1.state FROM college AS T1 JOIN tryout AS T2 ON T1.cName  =  T2.cName WHERE T2.pPos  =  'striker'

Question: What are the states of the colleges where students who tried out for the striker position attend?
SQL:
SELECT T1.state FROM college AS T1 JOIN tryout AS T2 ON T1.cName  =  T2.cName WHERE T2.pPos  =  'striker'

Question: Find the names of the students who are in the position of striker and got a yes tryout decision.
SQL:
SELECT T1.pName FROM player AS T1 JOIN tryout AS T2 ON T1.pID  =  T2.pID WHERE T2.decision  =  'yes' AND T2.pPos  =  'striker'

Question: What are the names of all students who successfully tried out for the position of striker?
SQL:
SELECT T1.pName FROM player AS T1 JOIN tryout AS T2 ON T1.pID  =  T2.pID WHERE T2.decision  =  'yes' AND T2.pPos  =  'striker'

Question: Find the state of the college which player Charles is attending.
SQL:
SELECT T1.state FROM college AS T1 JOIN tryout AS T2 ON T1.cName  =  T2.cName JOIN player AS T3 ON T2.pID  =  T3.pID WHERE T3.pName  =  'Charles'

Question: In which state is the college that Charles attends?
SQL:
SELECT T1.state FROM college AS T1 JOIN tryout AS T2 ON T1.cName  =  T2.cName JOIN player AS T3 ON T2.pID  =  T3.pID WHERE T3.pName  =  'Charles'

Question: Find the average and maximum hours for the students whose tryout decision is yes.
SQL:
SELECT avg(T1.HS) ,  max(T1.HS) FROM player AS T1 JOIN tryout AS T2 ON T1.pID  =  T2.pID WHERE T2.decision  =  'yes'

Question: What is the average and maximum number of hours students who made the team practiced?
SQL:
SELECT avg(T1.HS) ,  max(T1.HS) FROM player AS T1 JOIN tryout AS T2 ON T1.pID  =  T2.pID WHERE T2.decision  =  'yes'

Question: Find the average hours for the students whose tryout decision is no.
SQL:
SELECT avg(T1.HS) FROM player AS T1 JOIN tryout AS T2 ON T1.pID  =  T2.pID WHERE T2.decision  =  'no'

Question: What is the average number of hours spent practicing for students who got rejected?
SQL:
SELECT avg(T1.HS) FROM player AS T1 JOIN tryout AS T2 ON T1.pID  =  T2.pID WHERE T2.decision  =  'no'

Question: What is the maximum training hours for the students whose training hours is greater than 1000 in different positions?
SQL:
SELECT max(T1.HS) ,  pPos FROM player AS T1 JOIN tryout AS T2 ON T1.pID  =  T2.pID WHERE T1.HS  >  1000 GROUP BY T2.pPos

Question: For each position, what is the maximum number of  hours for students who spent more than 1000 hours training?
SQL:
SELECT max(T1.HS) ,  pPos FROM player AS T1 JOIN tryout AS T2 ON T1.pID  =  T2.pID WHERE T1.HS  >  1000 GROUP BY T2.pPos

Question: Which colleges do the tryout players whose name starts with letter D go to?
SQL:
SELECT T1.cName FROM  tryout AS T1 JOIN player AS T2 ON T1.pID  =  T2.pID WHERE T2.pName LIKE 'D%'

Question: Which colleges does each player with a name that starts with the letter D  who tried out go to?
SQL:
SELECT T1.cName FROM  tryout AS T1 JOIN player AS T2 ON T1.pID  =  T2.pID WHERE T2.pName LIKE 'D%'

Question: Which college has any student who is a goalie and succeeded in the tryout.
SQL:
SELECT cName FROM  tryout WHERE decision  =  'yes' AND pPos  =  'goalie'

Question: What college has a student who successfully made the team in the role of a goalie?
SQL:
SELECT cName FROM  tryout WHERE decision  =  'yes' AND pPos  =  'goalie'

Question: Find the name of the tryout players who are from the college with largest size.
SQL:
SELECT T2.pName FROM  tryout AS T1 JOIN player AS T2 ON T1.pID  =  T2.pID WHERE T1.cName  =  (SELECT cName FROM college ORDER BY enr DESC LIMIT 1)

Question: What are the names of all tryout participants who are from the largest college?
SQL:
SELECT T2.pName FROM  tryout AS T1 JOIN player AS T2 ON T1.pID  =  T2.pID WHERE T1.cName  =  (SELECT cName FROM college ORDER BY enr DESC LIMIT 1)

Question: What is the state and enrollment of the colleges where have any students who got accepted in the tryout decision.
SQL:
SELECT DISTINCT T1.state ,  T1.enr FROM college AS T1 JOIN tryout AS T2 ON T1.cName  =  T2.cName WHERE T2.decision  =  'yes'

Question: How many students are enrolled in colleges that have student accepted during tryouts, and in which states are those colleges?
SQL:
SELECT DISTINCT T1.state ,  T1.enr FROM college AS T1 JOIN tryout AS T2 ON T1.cName  =  T2.cName WHERE T2.decision  =  'yes'

Question: Find the names of either colleges in LA with greater than 15000 size or in state AZ with less than 13000 enrollment.
SQL:
SELECT cName FROM College WHERE enr  <  13000 AND state = "AZ" UNION SELECT cName FROM College WHERE enr  >  15000 AND state = "LA"

Question: What are the names of colleges in LA that have more than 15,000 students and of colleges in AZ with less than 13,000 students?
SQL:
SELECT cName FROM College WHERE enr  <  13000 AND state = "AZ" UNION SELECT cName FROM College WHERE enr  >  15000 AND state = "LA"

Question: Find the names of schools that have some students playing in goalie and mid positions.
SQL:
SELECT cName FROM  tryout WHERE pPos  =  'goalie' INTERSECT SELECT cName FROM  tryout WHERE pPos  =  'mid'

Question: What are the names of all schools that have students trying out for the position of goal and 'mid'-field.
SQL:
SELECT cName FROM  tryout WHERE pPos  =  'goalie' INTERSECT SELECT cName FROM  tryout WHERE pPos  =  'mid'

Question: Find the names of states that have some college students playing in goalie and mid positions.
SQL:
SELECT T1.state FROM college AS T1 JOIN tryout AS T2 ON T1.cName  =  T2.cName WHERE T2.pPos  =  'goalie' INTERSECT SELECT T1.state FROM college AS T1 JOIN tryout AS T2 ON T1.cName  =  T2.cName WHERE T2.pPos  =  'mid'

Question: What are the names of the states that have some college students playing in the positions of goalie and mid-field?
SQL:
SELECT T1.state FROM college AS T1 JOIN tryout AS T2 ON T1.cName  =  T2.cName WHERE T2.pPos  =  'goalie' INTERSECT SELECT T1.state FROM college AS T1 JOIN tryout AS T2 ON T1.cName  =  T2.cName WHERE T2.pPos  =  'mid'

Question: How many schools have some students playing in goalie and mid positions.
SQL:
SELECT COUNT(*) FROM (SELECT cName FROM  tryout WHERE pPos  =  'goalie' INTERSECT SELECT cName FROM  tryout WHERE pPos  =  'mid')

Question: How many schools have students playing in goalie and mid-field positions?
SQL:
SELECT COUNT(*) FROM (SELECT cName FROM  tryout WHERE pPos  =  'goalie' INTERSECT SELECT cName FROM  tryout WHERE pPos  =  'mid')

Question: Find the names of schools that have some players in the mid position but not in the goalie position.
SQL:
SELECT cName FROM  tryout WHERE pPos  =  'mid' EXCEPT SELECT cName FROM  tryout WHERE pPos  =  'goalie'

Question: What are the names of the schools with some players in the mid position but no goalies?
SQL:
SELECT cName FROM  tryout WHERE pPos  =  'mid' EXCEPT SELECT cName FROM  tryout WHERE pPos  =  'goalie'

Question: Find the names of states that have some college students playing in the mid position but not in the goalie position.
SQL:
SELECT T1.state FROM college AS T1 JOIN tryout AS T2 ON T1.cName  =  T2.cName WHERE T2.pPos  =  'mid' EXCEPT SELECT T1.state FROM college AS T1 JOIN tryout AS T2 ON T1.cName  =  T2.cName WHERE T2.pPos  =  'goalie'

Question: What are the names of all the states with college students playing in the mid position but no goalies?
SQL:
SELECT T1.state FROM college AS T1 JOIN tryout AS T2 ON T1.cName  =  T2.cName WHERE T2.pPos  =  'mid' EXCEPT SELECT T1.state FROM college AS T1 JOIN tryout AS T2 ON T1.cName  =  T2.cName WHERE T2.pPos  =  'goalie'

Question: How many states that have some college students playing in the mid position but not in the goalie position.
SQL:
SELECT COUNT(*) FROM (SELECT T1.state FROM college AS T1 JOIN tryout AS T2 ON T1.cName  =  T2.cName WHERE T2.pPos  =  'mid' EXCEPT SELECT T1.state FROM college AS T1 JOIN tryout AS T2 ON T1.cName  =  T2.cName WHERE T2.pPos  =  'goalie')

Question: What is the count of states with college students playing in the mid position but not as goalies?
SQL:
SELECT COUNT(*) FROM (SELECT T1.state FROM college AS T1 JOIN tryout AS T2 ON T1.cName  =  T2.cName WHERE T2.pPos  =  'mid' EXCEPT SELECT T1.state FROM college AS T1 JOIN tryout AS T2 ON T1.cName  =  T2.cName WHERE T2.pPos  =  'goalie')

Question: Find the states where have the colleges whose enrollments are less than the largest size.
SQL:
SELECT DISTINCT state FROM college WHERE enr  <  (SELECT max(enr) FROM college)

Question: What are the states with colleges that have enrollments less than the some other college?
SQL:
SELECT DISTINCT state FROM college WHERE enr  <  (SELECT max(enr) FROM college)

Question: Find names of colleges with enrollment greater than that of some (at least one) college in the FL state.
SQL:
SELECT DISTINCT cName FROM college WHERE enr  >  (SELECT min(enr) FROM college WHERE state  =  'FL')

Question: What are the names of the colleges that are larger than at least one college in Florida?
SQL:
SELECT DISTINCT cName FROM college WHERE enr  >  (SELECT min(enr) FROM college WHERE state  =  'FL')

Question: Find names of all colleges whose enrollment is greater than that of all colleges in the FL state.
SQL:
SELECT cName FROM college WHERE enr  >  (SELECT max(enr) FROM college WHERE state  =  'FL')

Question: What are the names of all colleges with a larger enrollment than the largest college in Florida?
SQL:
SELECT cName FROM college WHERE enr  >  (SELECT max(enr) FROM college WHERE state  =  'FL')

Question: What is the total number of enrollment of schools that do not have any goalie player?
SQL:
SELECT sum(enr) FROM college WHERE cName NOT IN (SELECT cName FROM tryout WHERE pPos  =  "goalie")

Question: What is the total number of students enrolled in schools without any goalies?
SQL:
SELECT sum(enr) FROM college WHERE cName NOT IN (SELECT cName FROM tryout WHERE pPos  =  "goalie")

Question: What is the number of states that has some college whose enrollment is larger than the average enrollment?
SQL:
SELECT count(DISTINCT state) FROM college WHERE enr  >  (SELECT avg(enr) FROM college)

Question: How many states have a college with more students than average?
SQL:
SELECT count(DISTINCT state) FROM college WHERE enr  >  (SELECT avg(enr) FROM college)

Question: What is the number of states that has some colleges whose enrollment is smaller than the average enrollment?
SQL:
SELECT count(DISTINCT state) FROM college WHERE enr  <  (SELECT avg(enr) FROM college)

Question: How many states have smaller colleges than average?
SQL:
SELECT count(DISTINCT state) FROM college WHERE enr  <  (SELECT avg(enr) FROM college)