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From: Andrew Gierth <andrew@tao11.riddles.org.uk>
To: MichaelDBA <MichaelDBA@sqlexec.com>
Cc: Jeff Janes <jeff.janes@gmail.com>,  Justin Pryzby <pryzby@telsasoft.com>,
  Ivan Voras <ivoras@gmail.com>,
  postgres performance list <pgsql-performance@postgresql.org>
Subject: Re: Optimising a two column OR check
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>>>>> "MichaelDBA" == MichaelDBA  <MichaelDBA@sqlexec.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)