Re: Optimising a two column OR check

From: MichaelDBA <MichaelDBA(at)sqlexec(dot)com>
To: Andrew Gierth <andrew(at)tao11(dot)riddles(dot)org(dot)uk>
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 15:35:22
Message-ID: 25d9306a-d0e9-ed82-3128-bff469f09aed@sqlexec.com
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Nope, vacuumed it and still got the bitmap index scans.

Andrew Gierth wrote on 10/12/2019 11:33 AM:
>>>>>> "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.
>

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