Re: patch: optimize information_schema.constraint_column_usage

From: Peter Eisentraut <peter(dot)eisentraut(at)2ndquadrant(dot)com>
To: Alexey Bashtanov <bashtanov(at)imap(dot)cc>, pgsql-hackers(at)postgresql(dot)org
Subject: Re: patch: optimize information_schema.constraint_column_usage
Date: 2017-02-18 00:36:00
Message-ID: 100ba94e-cc89-cf93-e656-2d950c6c4db5@2ndquadrant.com
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On 2/2/17 08:27, Alexey Bashtanov wrote:
> The view information_schema.constraint_column_usage becomes slow when
> the number of columns and constraints raise to substantial values.
> This is because of a join condition that allows only join filter to
> enforce. The patch is to optimize it.

committed, thanks

--
Peter Eisentraut http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services

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