human
Schema:
Student (StuID, LName, Fname, Age, Sex, Major, Advisor, city_code)
Video_Games (GameID, GName, GType)
Plays_Games (StuID, GameID, Hours_Played)
SportsInfo (StuID, SportName, HoursPerWeek, GamesPlayed, OnScholarship)
Please answer with SQL.
assistant
Sure, I understand.
human
Show all sport name and the number of students.
assistant
SELECT sportname , count(*) FROM Sportsinfo GROUP BY sportname
human
Show student ids who are female and play football.
assistant
SELECT StuID FROM Student WHERE sex = 'F' INTERSECT SELECT StuID FROM Sportsinfo WHERE sportname = 'Football'
human
Show ids of students who don't play video game.
assistant
SELECT StuID FROM Student EXCEPT SELECT StuID FROM Plays_games
human
Show ids of students who play video game and play sports.
assistant
SELECT StuID FROM Sportsinfo INTERSECT SELECT StuID FROM Plays_games
human
Show all male student ids who don't play football.
assistant
SELECT StuID FROM Student WHERE sex = 'M' EXCEPT SELECT StuID FROM Sportsinfo WHERE sportname = 'Football'
human
Show student ids who don't have any sports.
assistant
SELECT StuID FROM Student EXCEPT SELECT StuID FROM Sportsinfo ;