Re: dependency between numbers keywords and parser speed

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: Pavel Stehule <pavel(dot)stehule(at)gmail(dot)com>
Cc: PostgreSQL Hackers <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: dependency between numbers keywords and parser speed
Date: 2011-03-14 20:34:40
Message-ID: 29940.1300134880@sss.pgh.pa.us
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Pavel Stehule <pavel(dot)stehule(at)gmail(dot)com> writes:
> there was a discussion about impact of number of keyword for parser
> speed. I did some synthetic tests and I didn't see any slowness on
> pgbench when I increased a number of keywords.

I don't see any particular reason to suppose that pgbench would be a
good framework for stressing parsing speed. The queries it issues
are of trivial length.

regards, tom lane

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