Re: Possible typo/unclear comment in joinpath.c

Justin Pryzby <pryzby@telsasoft.com> writes:
> On Wed, Apr 14, 2021 at 11:36:38AM -0400, James Coleman wrote:
>> In joinpath.c three times we reference "extra_lateral_rels" (with
>> underscores like it's a field), but as far as I can tell that's not a
>> field anywhere in the source code, and looking at the code that
>> follows it seems like it should be referencing "lateral_relids" (and
>> the "extra" is really "extra [in relation to relids]").

> It looks like a loose end from 

> commit edca44b1525b3d591263d032dc4fe500ea771e0e
> Author: Tom Lane <tgl@sss.pgh.pa.us>
> Date:   Mon Dec 7 18:56:14 2015 -0500

>     Simplify LATERAL-related calculations within add_paths_to_joinrel().

Yeah :-(.  I'm usually pretty careful about grepping for comment
references as well as code references to a field when I do something
like that, but obviously I missed that step that time.

Will fix, thanks James!

            regards, tom lane