Perfect, Thanks so much to all who assisted me. -----Original Message----- From: pgsql-general-owner@xxxxxxxxxxxxxx [mailto:pgsql-general-owner@xxxxxxxxxxxxxx] On Behalf Of Martijn van Oosterhout Sent: Tuesday, June 07, 2005 10:51 AM To: Scott Marlowe Cc: Jaime Casanova; Tim Vadnais; pgsql-general@xxxxxxxxxxxxxx; Hackers Subject: Re: Issue with adding ORDER BY to EXCEPT. On Tue, Jun 07, 2005 at 12:42:47PM -0500, Scott Marlowe wrote: > On Tue, 2005-06-07 at 12:16, Jaime Casanova wrote: > > I suppose this is because the columns in the except are the same that > > the ones in the main select and the order by get confused. > > > > i'm redirecting to hackers to know if this is a known bug or there is > > something wrong in the select? i don't see anything wrong!! > > No, it's because to the order by, the column names are the ones given by > the part after the period of the first select. If you do a plain select > UNION select with no order by, you'll see the title for the columns is > taken from the first select list column names. > > So, the order by needs to be "order by encounter_id, encounter_d_id Or even easier: order by 1, 2; Then you don't even need to know the column names... -- Martijn van Oosterhout <kleptog@xxxxxxxxx> http://svana.org/kleptog/ > Patent. n. Genius is 5% inspiration and 95% perspiration. A patent is a > tool for doing 5% of the work and then sitting around waiting for someone > else to do the other 95% so you can sue them. ---------------------------(end of broadcast)--------------------------- TIP 8: explain analyze is your friend
