IF NOT EXISTS (SELECT * FROM SYS.COLUMNS WHERE NAME = 'OBS' AND OBJECT_ID = OBJECT_ID('GLB_MOV_OP_PRE_FATURA'))
BEGIN
	ALTER TABLE GLB_MOV_OP_PRE_FATURA ADD OBS VARCHAR(100) COLLATE SQL_Latin1_General_CP1_CI_AS NOT NULL CONSTRAINT DF_GLB_MOV_OP_PRE_FATURA_OBS DEFAULT ''
END
