Horton

Re: Correction of RowMark Removal During Sel-Join Elimination

Richard Guo <guofenglinux@gmail.com>

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From: Richard Guo <guofenglinux@gmail.com>
To: David Rowley <dgrowleyml@gmail.com>
Cc: Alexander Korotkov <aekorotkov@gmail.com>, Tom Lane <tgl@sss.pgh.pa.us>, Andrei Lepikhov <lepihov@gmail.com>, Greg Sabino Mullane <htamfids@gmail.com>, PostgreSQL Hackers <pgsql-hackers@lists.postgresql.org>, Alexander Lakhin <exclusion@gmail.com>
Date: 2026-01-05T01:31:06Z
Lists: pgsql-hackers 
On Sun, Jan 4, 2026 at 5:38 PM David Rowley <dgrowleyml@gmail.com> wrote:
> Is there anything left for this thread now? There's still a CF entry
> [1] for this. Can the status be updated according to the current
> situation? I see the CF entry's tags claim this is a "BugFix" and
> "Refactoring Only". It can't be both of those. If work still needs to
> be done here, can the tags also be fixed?

I don't think there is anything left for this thread, so I've gone
ahead and closed it.  I also removed the 'Refactoring Only' label
since it didn't really apply anyway (not sure why it was added in the
first place).

- Richard

Commits

  1. Improve RowMark handling during Self-Join Elimination

  2. Refactor variable names in remove_self_joins_one_group()

  3. Reduce "Var IS [NOT] NULL" quals during constant folding

  4. Reimplement parsing and storage of default expressions and constraint