if not exists(select 1 from syscolumns where id = object_id('EST_PROD_CPL_VD_LOTE_PROC_PRC_FILIAL') and name = 'DT_PROC')
begin 
ALTER TABLE dbo.EST_PROD_CPL_VD_LOTE_PROC_PRC_FILIAL ADD
	DT_PROC datetime NULL
end