SELECT cName FROM  tryout WHERE pPos  =  'mid' EXCEPT SELECT cName FROM  tryout WHERE pPos  =  'goalie'
What are the names of the schools with some players in the mid position but no goalies?
SELECT cName FROM tryout WHERE pPos = 'mid ' EXCEPT SELECT cName FROM tryout WHERE pPos = 'goalie '
select cname from tryout where ppos = value except select cname from tryout where ppos = value
What are the names of the schools with some players in the mid position but no goalies ?