Re: Strange result with LATERAL query

From: Andrew Gierth <andrew(at)tao11(dot)riddles(dot)org(dot)uk>
To: Jeevan Chalke <jeevan(dot)chalke(at)enterprisedb(dot)com>
Cc: PostgreSQL Hackers <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: Strange result with LATERAL query
Date: 2016-08-24 12:55:00
Message-ID: 87y43mba4p.fsf@news-spur.riddles.org.uk
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>>>>> "Andrew" == Andrew Gierth <andrew(at)tao11(dot)riddles(dot)org(dot)uk> writes:
>>>>> "Jeevan" == Jeevan Chalke <jeevan(dot)chalke(at)enterprisedb(dot)com> writes:

Jeevan> Hi,
Jeevan> While playing with LATERAL along with some aggregates in
Jeevan> sub-query, I have observed somewhat unusual behavior.

Andrew> Simpler example not needing LATERAL:

Andrew> select array(select sum(x+y) from generate_series(1,3) y group by y)
Andrew> from generate_series(1,3) x;

Oh, and another way to verify that it's a bug and not expected behavior
is that it goes away with set enable_hashagg=false;

--
Andrew (irc:RhodiumToad)

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