if not exists(select 1 from syscolumns where id = object_id('EST_NF_ENT_DAR') and name = 'VLR_DAR_PAGO_PELO_FORNECEDOR')
begin
ALTER TABLE dbo.EST_NF_ENT_DAR ADD
	VLR_DAR_PAGO_PELO_FORNECEDOR money NOT NULL CONSTRAINT DF_EST_NF_ENT_DAR_VLR_DAR_PAGO_PELO_FORNECEDOR DEFAULT 0
end