| From: | Alvaro Herrera <alvherre(at)commandprompt(dot)com> |
|---|---|
| To: | Robert Haas <robertmhaas(at)gmail(dot)com> |
| Cc: | jd(at)commandprompt(dot)com, Simon Riggs <simon(at)2ndquadrant(dot)com>, Heikki Linnakangas <heikki(dot)linnakangas(at)enterprisedb(dot)com>, pgsql-hackers <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: Pluggable Indexes (was Re: rmgr hooks (v2)) |
| Date: | 2009-01-22 16:04:10 |
| Message-ID: | 20090122160410.GF4296@alvh.no-ip.org |
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| Thread: | |
| Lists: | pgsql-hackers |
Robert Haas escribió:
> We allow extensibility and hooks in other parts of the database where
> the use case is pretty thin and tenuous. I betcha there aren't many
> people who try writing their own eqjoinsel() either.
The PostGIS guys do implement their own selectivity estimators. In fact
it was them that first implemented pluggability in that area, AFAIR.
--
Alvaro Herrera http://www.CommandPrompt.com/
The PostgreSQL Company - Command Prompt, Inc.
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