From: Tom Lane <tgl@sss.pgh.pa.us>
To: Dave Johansen <davejohansen@gmail.com>
Cc: pgsql-performance <pgsql-performance@postgresql.org>
Subject: Re: MAX() and multi-column index on a partitioned table?
Date: Fri, 22 May 2015 18:42:16 -0400
Message-ID: <17857.1432334536@sss.pgh.pa.us> (raw)
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Dave Johansen <davejohansen@gmail.com> writes:
> I'm trying to call MAX() on the first value of a multi-column index of a
> partitioned table and the planner is choosing to do a sequential scan
> instead of an index scan. Is there something I can do to fix this?
What PG version are you using? 9.1 or newer should know how to do this
with a merge append of several indexscans.
regards, tom lane
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To: pgsql-performance@postgresql.org
Cc: tgl@sss.pgh.pa.us, davejohansen@gmail.com
Subject: Re: MAX() and multi-column index on a partitioned table?
In-Reply-To: <17857.1432334536@sss.pgh.pa.us>
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