Re: Possible documentation inaccuracy in optimizer README

Tom Lane <tgl@sss.pgh.pa.us>

From: Tom Lane <tgl@sss.pgh.pa.us>
To: David Rowley <dgrowleyml@gmail.com>
Cc: Zeyuan Hu <ferrishu3886@gmail.com>, pgsql-docs@postgresql.org
Date: 2025-04-09T03:04:54Z
Lists: pgsql-docs
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



Commits

  1. Doc: note that two examples in optimizer/README are oversimplified.