Re: [PATCHES] Minimum selectivity estimate for LIKE 'prefix%'

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: Peter Eisentraut <peter_e(at)gmx(dot)net>
Cc: pgsql-hackers(at)postgresql(dot)org
Subject: Re: [PATCHES] Minimum selectivity estimate for LIKE 'prefix%'
Date: 2008-03-31 14:03:49
Message-ID: 27057.1206972229@sss.pgh.pa.us
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Peter Eisentraut <peter_e(at)gmx(dot)net> writes:
> OK, first results with this patch are in: The selectivity estimations are
> adjusted nicely, but the cost calculation doesn't change at all. Before:

I've forgotten the context ... what's the whole query and plan again?
And which PG version exactly?

regards, tom lane

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