> Can I get any better performance? You can try bumping your sort memory way up (for this query only).
Another method would be to cluster the table by the symbol column (eliminates the expensive sort). If you could run a very simple calculation against open & close numbers to eliminate a majority of symbols early, that would be useful as well. ---------------------------(end of broadcast)--------------------------- TIP 3: if posting/reading through Usenet, please send an appropriate subscribe-nomail command to [EMAIL PROTECTED] so that your message can get through to the mailing list cleanly