Doug McNaught wrote: > Reiner Dassing <[EMAIL PROTECTED]> writes: > > > Hello PostgreSQl Users! > > > > PostSQL V 7.1.1: > > > > I have defined a table and the necessary indices. > > But the index is not used in every SELECT. (Therefore, the selects are > > *very* slow, due to seq scan on > > 20 million entries, which is a test setup up to now) > > Perennial first question: did you VACUUM ANALYZE?
Can there, or could there, be a notion of "rule based" optimization of queries in PostgreSQL? The "not using index" problem is probably the most common and most misunderstood problem. ---------------------------(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
