IF NOT EXISTS (SELECT * FROM SYS.COLUMNS WHERE NAME = 'FLAG_NAO_ARREDONDA' AND OBJECT_ID = OBJECT_ID('EST_PROD_PRECO_ALT'))
BEGIN
	ALTER TABLE EST_PROD_PRECO_ALT ADD FLAG_NAO_ARREDONDA INT NOT NULL CONSTRAINT DF_EST_PROD_PRECO_ALT_FLAG_NAO_ARREDONDA DEFAULT 0
END