From: Tom Lane <tgl@sss.pgh.pa.us>
To: Josh Berkus <josh@agliodbs.com>
Cc: pgsql-performance@postgresql.org
Subject: Re: STRICT SQL functions never inline
Date: Tue, 08 Nov 2011 19:29:34 -0500
Message-ID: <14182.1320798574@sss.pgh.pa.us> (raw)
In-Reply-To: <4EB9BB3F.6090504@agliodbs.com>
References: <4EB9BB3F.6090504@agliodbs.com>
Josh Berkus <josh@agliodbs.com> writes:
> After having some production issues, I did some testing and it seems
> that any SQL function declared STRICT will never inline.
It won't unless the planner can prove that the resulting expression
behaves the same, ie, is also strict for *all* the parameters. Which
in most cases isn't true, or at least is very difficult to prove.
This is not a bug.
regards, tom lane
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To: pgsql-performance@postgresql.org
Cc: tgl@sss.pgh.pa.us, josh@agliodbs.com
Subject: Re: STRICT SQL functions never inline
In-Reply-To: <14182.1320798574@sss.pgh.pa.us>
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