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Re: Insertion to temp table deteriorating over time

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: "Steven Flatt" <steven(dot)flatt(at)gmail(dot)com>
Cc: pgsql-performance(at)postgresql(dot)org
Subject: Re: Insertion to temp table deteriorating over time
Date: 2006-12-18 18:00:55
Message-ID: 19298.1166464855@sss.pgh.pa.us (view raw or flat)
Thread:
Lists: pgsql-performance
"Steven Flatt" <steven(dot)flatt(at)gmail(dot)com> writes:
> I can fix this problem by using CREATE TEMP TABLE ... LIKE instead of CREATE
> TEMP TABLE ... AS.

That seems ... um ... bizarre.  Now are you able to put together a
self-contained test case?  Seems like we could have two independent bugs
here: first, why (and how) is the temp table different, and second how
does that result in the observed performance problem.

			regards, tom lane

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