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Re: [HACKERS] Planner doesn't look at LIMIT?

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: Simon Riggs <simon(at)2ndquadrant(dot)com>
Cc: Dawid Kuroczko <qnex42(at)gmail(dot)com>,pgsql-performance(at)postgresql(dot)org, pgsql-hackers(at)postgresql(dot)org
Subject: Re: [HACKERS] Planner doesn't look at LIMIT?
Date: 2005-07-22 18:06:17
Message-ID: (view raw, whole thread or download thread mbox)
Lists: pgsql-hackerspgsql-performance
Simon Riggs <simon(at)2ndquadrant(dot)com> writes:
> Looks good. I think it explains a few other wierd perf reports also.

Could be.  I went back to look at Sam Mason's report about three weeks
ago, and it definitely seems to explain his issue.  The "fuzzy cost
comparison" logic is new in 8.0 so it hasn't had all that much

			regards, tom lane

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