--find PO in files sent by SL --trim file to just the missing po select [SL_ECOMM].site, [SL_ECOMM].order_id, SOH.SOHNUM_0 from [analytics].[dbo].[SL_ECOMM] left join PROD.SORDER SOH on [SL_ECOMM].site = SOH.STOFCY_0 and [SL_ECOMM].order_id = SOH.CUSORDREF_0 and SOH.SOHTYP_0 = 'WEB' where SOH.SOHNUM_0 is null