On Thursday 12 February 2004 19:32, Jason Tesser wrote:
> Hi
>
> > Is there an index on:
> > testclass.classid
> I created the indexes and it speed up a little. Still a little slower
> than Access though. Which I think should not be. The testclass is a view
> not A query so I cannot make an index there.
But you can make one on the underlying table.
> What is the best way to index this stuff? Should I make one index
> (b-tree)
> And add all fkeys and pkey from that table?
You should apply indexes on columns where you need to discriminate amongst
different values quickly.
Anyway - what you need to do here is:
1. Run "VACUUM ANALYZE"
2. Run "EXPLAN ANALYZE SELECT tblroster.transcriptlink ..."
and post the output here.
Then we can see what query-plan PG is using.
3. Are you happy that your configuration is well tuned?
See http://www.varlena.com/varlena/GeneralBits/Tidbits/index.php
There is a performance tuning article and a breakdown of the config file
there.
--
Richard Huxton
Archonet Ltd
