| From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
|---|---|
| To: | Luca Ferrari <fluca1978(at)infinito(dot)it> |
| Cc: | pgsql-general(at)postgresql(dot)org |
| Subject: | Re: query optimizer |
| Date: | 2007-07-19 14:41:03 |
| Message-ID: | 5006.1184856063@sss.pgh.pa.us |
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| Lists: | pgsql-general |
Luca Ferrari <fluca1978(at)infinito(dot)it> writes:
> I'd like to better understand how the optimizer works and is implemented. Is
> there any available documentation (before start reading the source!) to
> understand concepts about geqo and system r? Any chance about any demo or
> presentation with detailed examples (about how the optimizer makes and
> discards choices, not about how to read the planner output)?
http://developer.postgresql.org/pgdocs/postgres/overview.html
(particularly 42.5)
src/backend/optimizer/README
The developers section of the website used to have slides from a couple
of talks I gave at OSCON, but I don't see them there anymore :-(
regards, tom lane
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