Re: [HACKERS] New to PostgreSQL Question (Query Optimizer)

>
> Hello,
> I'm newly into PostgreSQL from a SYBASE world and I haven't had a lot of
> time to get into the code, so bare with me please.
> Is there a query optimizer in PostgreSQL? or if not are there plans for
> one? And are there plans for anything like clustered indexes?
> I'm curious because one of the jobs I almost took a few years ago was
> working on the query optimizer itself. And please forgive me current
> ignorance of the architecture of your engine.

We have a first-class optimizer. If you look in the current sources,
the optimizer directory has a README that describes some of it. You
will need the 6.3/snapshot release from ftp.postgresql.org to see the
README, or go to www.postgresql.org, and go to support/documentation,
and choose the nice program flowchart. You can cruise around in there,
and see the source and README's.

--
Bruce Momjian
maillist(at)candle(dot)pha(dot)pa(dot)us