Re: Errors attempting to insert duplicate values
Ed Loehr <eloehr@austin.rr.com>
From: Ed Loehr <eloehr@austin.rr.com>
To: Bryan White <bryan@arcamax.com>
Cc: pgsql-general <pgsql-general@postgresql.org>
Date: 2000-06-09T14:46:46Z
Lists: pgsql-general
Bryan White wrote: > > I need to insert a record only if it does not > exist. If it does exists then I do nothing. However I do need to know if > it was inserted. Its seems most efficient to just attempt the insert and > look at the result. My only complaint is the log file is littered the error > messages about attempting to insert a duplicate. How about something like this? INSERT INTO foo (id, ...) SELECT 14, ... <=== literal insert values FROM foo WHERE NOT EXISTS (SELECT * FROM foo WHERE id = 14) It'll insert 1 or 0 records, and it won't try to insert a duplicate... Regards, Ed Loehr