Show all the information about the match season.
select * from match_season
List the positions.
select position from match_season
How many distinct positions are there?
select count(distinct position) from match_season
What are the distinct position of players from college Virginia?
select distinct position from match_season where college = "Virginia"
What about UCLA or Duke?
select distinct position from match_season where college = "UCLA" or college = "Duke"