IF NOT EXISTS (SELECT * FROM SYS.COLUMNS WHERE NAME = 'DT_CAD' AND OBJECT_ID = OBJECT_ID('PDV_VD_DEV_NCC_LANC_RC_VD_CONV_CRED'))
begin
ALTER TABLE dbo.PDV_VD_DEV_NCC_LANC_RC_VD_CONV_CRED ADD
	DT_CAD DATETIME NOT NULL CONSTRAINT DF_PDV_VD_DEV_NCC_LANC_RC_VD_CONV_CRED_DT_CAD DEFAULT GETDATE()
end