BEGIN;
CREATE TABLE IF NOT EXISTS "pk_teamshalf" (
	"yearID"	NUMERIC,
	"lgID"	TEXT,
	"teamID"	TEXT,
	"Half"	NUMERIC,
	"divID"	TEXT,
	"DivWin"	TEXT,
	"Rank"	NUMERIC,
	"G"	NUMERIC,
	"W"	NUMERIC,
	"L"	NUMERIC,
	PRIMARY KEY("Half","yearID","teamID")
);

INSERT INTO "pk_teamshalf" SELECT DISTINCT * FROM "teamshalf";
DROP TABLE "teamshalf";
ALTER TABLE "pk_teamshalf" RENAME TO "teamshalf";
COMMIT;