begin;
CREATE TABLE IF NOT EXISTS "pk_batting" (
	"playerID"	TEXT,
	"yearID"	NUMERIC,
	"stint"	NUMERIC,
	"teamID"	TEXT,
	"lgID"	TEXT,
	"G"	NUMERIC,
	"AB"	NUMERIC,
	"R"	NUMERIC,
	"H"	NUMERIC,
	"2B"	NUMERIC,
	"3B"	NUMERIC,
	"HR"	NUMERIC,
	"RBI"	NUMERIC,
	"SB"	NUMERIC,
	"CS"	NUMERIC,
	"BB"	NUMERIC,
	"SO"	NUMERIC,
	"IBB"	NUMERIC,
	"HBP"	NUMERIC,
	"SH"	NUMERIC,
	"SF"	NUMERIC,
	"GIDP"	NUMERIC,
	PRIMARY KEY("playerID","yearID","stint","teamID")
);

INSERT INTO "pk_batting" SELECT DISTINCT * FROM "batting";
DROP TABLE "batting";
ALTER TABLE "pk_batting" RENAME TO "batting";
commit;