SELECT count(DISTINCT T1.College) FROM match_season AS T1 JOIN team AS T2 ON T1.Team  =  T2.Team_id WHERE T2.Name  =  "Columbus Crew"
Count the number of different colleges that players who play for Columbus Crew are from.
SELECT count ( DISTINCT T1.College ) FROM match_season AS T1 JOIN team AS T2 ON T1.Team = T2.Team_id WHERE T2.Name = `` Columbus Crew ''
select count ( distinct t1 . college ) from match_season as t1 join team as t2 on t1 . team = t2 . team_id where t2 . name = value
Count the number of different colleges that players who play for Columbus Crew are from .