I don't think cursors are going to help in this case. The order by random() is still going to give different result sets on different pages.
Jeff ----- Original Message ----- From: Andreas Kretschmer <[EMAIL PROTECTED]> To: pgsql-sql@postgresql.org Sent: Wednesday, November 29, 2006 12:27:42 PM GMT-0500 US/Eastern Subject: Re: [SQL] consistent random order Jeff Herrin <[EMAIL PROTECTED]> schrieb: > I am returning results ordered randomly using 'order by random()'. My issue > has > to do with page numbers in our web application. When I hit the 2nd page and > retrieve results with an offset, ordering by random() isn't really what I want > since I will often receive results that were on the 1st page (they get re- > randomized). > > I'm looking for a way to order in a controled random order. Maybe a UDF. I think you are searching for CURSORs. 18:25 < akretschmer> ??cursor 18:25 < rtfm_please> For information about cursor 18:25 < rtfm_please> see http://www.postgresql.org/docs/current/static/plpgsql-cursors.html 18:25 < rtfm_please> or http://www.postgresql.org/docs/current/static/sql-declare.html With a CURSOR, you get one result-set and can walk through this result. Andreas -- Really, I'm not out to destroy Microsoft. That will just be a completely unintentional side effect. (Linus Torvalds) "If I was god, I would recompile penguin with --enable-fly." (unknow) Kaufbach, Saxony, Germany, Europe. N 51.05082°, E 13.56889° ---------------------------(end of broadcast)--------------------------- TIP 7: You can help support the PostgreSQL project by donating at http://www.postgresql.org/about/donate ---------------------------(end of broadcast)--------------------------- TIP 9: In versions below 8.0, the planner will ignore your desire to choose an index scan if your joining column's datatypes do not match
