Horton

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

Heikki Linnakangas <heikki.linnakangas@enterprisedb.com>

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From: Heikki Linnakangas <heikki.linnakangas@enterprisedb.com>
To: Marti Raudsepp <marti@juffo.org>
Cc: Tom Lane <tgl@sss.pgh.pa.us>, pgsql-hackers <pgsql-hackers@postgresql.org>, Josh Berkus <josh@agliodbs.com>
Date: 2011-12-05T19:04:03Z
Lists: pgsql-hackers

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  1. include_if_exists facility for config file.

On 05.12.2011 20:53, Marti Raudsepp wrote:
> I considered stripping CacheExpr nodes later in PL/pgSQL, but I can't
> remember right now why I rejected that approach (sorry, it's been 2
> months).

Yet another idea would be to leave the CacheExprs there, but provide a 
way to reset the caches. PL/pgSQL could then reset the caches between 
every invocation. Or pass a flag to ExecInitExpr() to skip through the 
CacheExprs.

-- 
   Heikki Linnakangas
   EnterpriseDB   http://www.enterprisedb.com