From: Tom Lane <tgl@sss.pgh.pa.us>
To: Dean Gibson (DB Administrator) <postgresql@mailpen.com>
Cc: pgsql-performance@lists.postgresql.org <pgsql-performance@lists.postgresql.org>
Subject: Re: AWS forcing PG upgrade from v9.6 a disaster
Date: Mon, 31 May 2021 00:44:27 -0400
Message-ID: <2524029.1622436267@sss.pgh.pa.us> (raw)
In-Reply-To: <5463af86-9007-1094-78bf-18e54c60edaf@mailpen.com>
References: <88dec70b-eb63-0b72-0b5d-253851ef127b@mailpen.com>
<92cc8563-195f-8727-d887-5f2bb63f231f@mailpen.com>
<2370D2C6-4D91-4C96-9410-11EFD9954B21@thebuild.com>
<5463af86-9007-1094-78bf-18e54c60edaf@mailpen.com>
"Dean Gibson (DB Administrator)" <postgresql@mailpen.com> writes:
> I thought that having a "USING" clause, was semantically equivalent to
> an "ON" clause with the equalities explicitly stated. So no, I didn't
> try that.
USING is not that, or at least not only that ... read the manual.
I'm wondering if what you saw is some side-effect of the aliasing
that USING does.
regards, tom lane
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To: pgsql-performance@postgresql.org
Cc: tgl@sss.pgh.pa.us, postgresql@mailpen.com, pgsql-performance@lists.postgresql.org
Subject: Re: AWS forcing PG upgrade from v9.6 a disaster
In-Reply-To: <2524029.1622436267@sss.pgh.pa.us>
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