Re: Optimising a two column OR check

From: Andrew Gierth <andrew(at)tao11(dot)riddles(dot)org(dot)uk>
To: MichaelDBA <MichaelDBA(at)sqlexec(dot)com>
Cc: Jeff Janes <jeff(dot)janes(at)gmail(dot)com>, Justin Pryzby <pryzby(at)telsasoft(dot)com>, Ivan Voras <ivoras(at)gmail(dot)com>, postgres performance list <pgsql-performance(at)postgresql(dot)org>
Subject: Re: Optimising a two column OR check
Date: 2019-10-12 15:33:37
Message-ID: 87y2xqvv1x.fsf@news-spur.riddles.org.uk
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>>>>> "MichaelDBA" == MichaelDBA <MichaelDBA(at)sqlexec(dot)com> writes:

MichaelDBA> BTW, to Andrew, the UNION ALL alternative still results in
MichaelDBA> bitmap index scans from my testing.

You probably forgot to vacuum the table.

--
Andrew (irc:RhodiumToad)

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