CREATE TABLE tryout (pid DECIMAL, cname TEXT, ppos TEXT, decision TEXT)
CREATE TABLE player (pid DECIMAL, pname TEXT, ycard TEXT, hs DECIMAL)
CREATE TABLE college (cname TEXT, state TEXT, enr DECIMAL)

What are the names of all the states with college students playing in the mid position but no goalies?
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'
SELECT "T1"."state" FROM "college" AS "T1" JOIN "tryout" AS "T2" ON "T1"."cname" = "T2"."cname" AND "T2"."ppos" = 'mid' EXCEPT SELECT "T1"."state" FROM "college" AS "T1" JOIN "tryout" AS "T2" ON "T1"."cname" = "T2"."cname" AND "T2"."ppos" = 'goalie'