Re: Fix a wrong comment in setrefs.c

On 03/11/2023 08:10, Richard Guo wrote:
> On Tue, Sep 26, 2023 at 9:51 AM Richard Guo <guofenglinux@gmail.com
> <mailto:guofenglinux@gmail.com>> wrote:
>     On Tue, Sep 26, 2023 at 5:45 AM Tom Lane <tgl@sss.pgh.pa.us
>     <mailto:tgl@sss.pgh.pa.us>> wrote:
>
>         I'm inclined to write the comment more like "Usually the equal()
>         check is redundant, but in setop plans it may not be, since
>         prepunion.c assigns ressortgroupref equal to the column resno
>         without regard to whether that matches the topmost level's
>         sortgrouprefs and without regard to whether any implicit coercions
>         are added in the setop tree.  We might have to clean that up
>         someday;
>         but for now, just ignore any false matches."
>
>     +1.  It explains the situation much more clearly and accurately.
>
> To make it easier to review, I've updated the patch to be so.

Committed, thanks!