Re: [PERFORM] SQL performance problems

2003-09-01 Thread Alberto Caso
On Mon, 01-09-2003 at 13:42, Rhaoni Chiu Pereira wrote: > I've done that but it didn't make much difference. > Do you know some documentation on explain ? I don't understand the results.. > http://developer.postgresql.org/docs/postgres/sql-explain.html http://developer.postgresql.org/docs/postgr

Re: [PERFORM] SQL performance problems

2003-08-31 Thread Alberto Caso
Hi, Estimated and actual rows differ a lot. Did you a VACUUM ANALYZE so that the optimizer could update its statistics? Also it would be great if you could provide more information, as your PostgreSQL version, your table and indexes descriptions, etc. Have a look at: ht

Re: [PERFORM] SQL performance problems

2003-08-29 Thread Tom Lane
Rhaoni Chiu Pereira <[EMAIL PROTECTED]> writes: >I still have performance problems with this sql: It seems odd that all the joins are being done as nestloops. Perhaps you shouldn't be forcing enable_seqscan off? regards, tom lane ---(end of br