BEGIN;
CREATE TABLE IF NOT EXISTS "pk_collegeplaying" (
	"playerID"	TEXT,
	"schoolID"	TEXT,
	"yearID"	NUMERIC,
	PRIMARY KEY("playerID","yearID","schoolID")
);

INSERT INTO "pk_collegeplaying" SELECT DISTINCT * FROM "collegeplaying";
DROP TABLE "collegeplaying";
ALTER TABLE "pk_collegeplaying" RENAME TO "collegeplaying";
COMMIT;