Horton

Re: [PATCH] Caching for stable expressions with constant arguments v3

Marti Raudsepp <marti@juffo.org>

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From: Marti Raudsepp <marti@juffo.org>
To: Jaime Casanova <jaime@2ndquadrant.com>
Cc: Greg Smith <greg@2ndquadrant.com>, pgsql-hackers@postgresql.org
Date: 2011-12-17T17:24:02Z
Lists: pgsql-hackers

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  1. include_if_exists facility for config file.

On Fri, Dec 16, 2011 at 21:32, Jaime Casanova <jaime@2ndquadrant.com> wrote:
> Actually i tried some benchmarks with the original version of the
> patch and saw some regression with normal pgbench runs, but it wasn't
> much... so i was trying to found out some queries that show benefit
> now that we have it, that will be a lot more easier

Ah, one more trick for testing this patch: if you build with
-DDEBUG_CACHEEXPR=1 then EXPLAIN VERBOSE displays cached
subexpressions between a CACHE[...] marker.

Regards,
Marti