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help / color / mirror / Atom feedFrom: Tom Lane <tgl@sss.pgh.pa.us>
To: David Rowley <dgrowleyml@gmail.com>
Cc: Zeyuan Hu <ferrishu3886@gmail.com>
Cc: pgsql-docs@postgresql.org
Subject: Re: Possible documentation inaccuracy in optimizer README
Date: Tue, 08 Apr 2025 23:04:54 -0400
Message-ID: <115037.1744167894@sss.pgh.pa.us> (raw)
In-Reply-To: <CAApHDvoxSLCeQ=m35Je9L7VM_2cGKvxvRPwK0vihQzSyKzsJFA@mail.gmail.com>
References: <CACvHWmYFo+60yMqKJajDDvKN5EM41YHrCT3oxukwXmGAqpWvyw@mail.gmail.com>
<3887651.1744086487@sss.pgh.pa.us>
<CAApHDvpbJrzQC-gZk0XpxMbk5CW=zj+R5KajuhP=Hw7xSdL5VQ@mail.gmail.com>
<111828.1744166032@sss.pgh.pa.us>
<CAApHDvoxSLCeQ=m35Je9L7VM_2cGKvxvRPwK0vihQzSyKzsJFA@mail.gmail.com>
David Rowley <dgrowleyml@gmail.com> writes:
> On Wed, 9 Apr 2025 at 14:33, Tom Lane <tgl@sss.pgh.pa.us> wrote:
>> Maybe better:
>>
>> Other possibilities will be excluded for lack of join clauses.
>> (In reality, use of EquivalenceClasses would allow us to
>> deduce additional join clauses that allow more join
>> combinations, but here we ignore that to preserve the
>> simplicity of this example.)
> Looks good to me.
OK, done. I moved the text after noticing that it really applies
to both of the examples here.
regards, tom lane
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To: pgsql-docs@postgresql.org
Cc: tgl@sss.pgh.pa.us, dgrowleyml@gmail.com, ferrishu3886@gmail.com
Subject: Re: Possible documentation inaccuracy in optimizer README
In-Reply-To: <115037.1744167894@sss.pgh.pa.us>
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