"Gregory Stark" <[EMAIL PROTECTED]> writes: > Nis Jørgensen <[EMAIL PROTECTED]> writes: > >> 1. Look up all order_ids for which (order_id,my_invoice_id) appear in >> eg_orders >> >> 2. Find all rows (in both branches of the UNION) with these id_s
Oh, did you mean look up the order_ids for which there was at least one record with the invoice_id specified, then look up all records with those order_ids regardless of invoice_id? That would work but as you say it would be hard to tell whether it will be any faster than just processing all the order_ids. -- Gregory Stark EnterpriseDB http://www.enterprisedb.com ---------------------------(end of broadcast)--------------------------- TIP 5: don't forget to increase your free space map settings
