Re: Possible documentation inaccuracy in optimizer README

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: David Rowley <dgrowleyml(at)gmail(dot)com>
Cc: Zeyuan Hu <ferrishu3886(at)gmail(dot)com>, pgsql-docs(at)postgresql(dot)org
Subject: Re: Possible documentation inaccuracy in optimizer README
Date: 2025-04-09 03:04:54
Message-ID: 115037.1744167894@sss.pgh.pa.us
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David Rowley <dgrowleyml(at)gmail(dot)com> writes:
> On Wed, 9 Apr 2025 at 14:33, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)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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