From: Andreas Joseph Krogh <andreas@visena.com>
To: pgsql-performance@postgresql.org
Subject: Re: Slow HashAggregate/cache access
Date: Wed, 5 Aug 2015 21:55:58 +0200 (CEST)
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På onsdag 05. august 2015 kl. 20:25:25, skrev Maxim Boguk <maxim.boguk@gmail.com
<mailto:maxim.boguk@gmail.com>>: [snip] I think I know where issue is.
The PostgreSQL planner unable pass join conditions into subquery with
aggregate functions (it's well known limitation).
[snip]
I'm curious; will 9.5 help here as it has "WHERE clause pushdown in subqueries
with window functions"?
http://michael.otacoo.com/postgresql-2/postgres-9-5-feature-highlight-where-pushdown-with-window-fun...
Are you able to try 9.5 and post the results?
Thanks.
-- Andreas Joseph Krogh
CTO / Partner - Visena AS
Mobile: +47 909 56 963
andreas@visena.com <mailto:andreas@visena.com>
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To: pgsql-performance@postgresql.org
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Subject: Re: Slow HashAggregate/cache access
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