Horton

Re: Reduce "Var IS [NOT] NULL" quals during constant folding

Richard Guo <guofenglinux@gmail.com>

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From: Richard Guo <guofenglinux@gmail.com>
To: Tom Lane <tgl@sss.pgh.pa.us>
Cc: Robert Haas <robertmhaas@gmail.com>, Peter Eisentraut <peter@eisentraut.org>, David Rowley <dgrowleyml@gmail.com>, Tender Wang <tndrwang@gmail.com>, Pg Hackers <pgsql-hackers@lists.postgresql.org>
Date: 2025-07-16T01:57:51Z
Lists: pgsql-hackers

Commits

Same data as JSON: GET /api/v1/messages/:b64id/commits the thread's linked commits as JSON, with link sources. API reference →

  1. Fix misuse of Relids for storing attribute numbers

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

  3. Centralize collection of catalog info needed early in the planner

  4. Expand virtual generated columns before sublink pull-up

  5. Expand virtual generated columns in the planner

On Wed, Jul 9, 2025 at 3:32 PM Richard Guo <guofenglinux@gmail.com> wrote:
> On Mon, Jun 30, 2025 at 4:26 PM Richard Guo <guofenglinux@gmail.com> wrote:
> > On Wed, May 28, 2025 at 6:28 PM Richard Guo <guofenglinux@gmail.com> wrote:
> > > This patchset does not apply anymore due to 2c0ed86d3.  Here is a new
> > > rebase.
>
> > This patchset does not apply anymore, due to 5069fef1c this time.
> > Here is a new rebase.
>
> Here is a new rebase.  I moved the call to preprocess_relation_rtes to
> a later point within convert_EXISTS_sublink_to_join, so we can avoid
> the work if it turns out that the EXISTS SubLink cannot be flattened.
> Nothing essential has changed.
>
> The NOT-IN pullup work depends on the changes in this patchset (it
> also relies on the not-null information), so I'd like to move it
> forward.
>
> Hi Tom, Robert -- just to be sure, are you planning to take another
> look at it?

I'm aiming to push this patchset next week, barring any objections.

Thanks
Richard