IF NOT EXISTS (SELECT * FROM SYS.COLUMNS WHERE NAME = 'FLAG_NAO_ENVIA_ECOMMERCE' AND OBJECT_ID = OBJECT_ID('EST_PROD'))
BEGIN
	ALTER TABLE EST_PROD ADD FLAG_NAO_ENVIA_ECOMMERCE TINYINT NOT NULL CONSTRAINT DF_EST_PROD_FLAG_NAO_ENVIA_ECOMMERCE DEFAULT 0
END