Re: Redundant Result node

David Rowley <dgrowleyml@gmail.com>

From: David Rowley <dgrowleyml@gmail.com>

To: Peter Eisentraut <peter@eisentraut.org>

Cc: Richard Guo <guofenglinux@gmail.com>, PostgreSQL-development <pgsql-hackers@postgresql.org>

Date: 2024-08-22T12:02:48Z

Lists: pgsql-hackers

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Avoid unnecessary post-sort projection
- 9626068f1333 18.0 landed

On Thu, 22 Aug 2024 at 23:33, Peter Eisentraut <peter@eisentraut.org> wrote:
> > I wonder if we need to invent a function to compare two PathTargets.
>
> Wouldn't the normal node equal() work?

It might. I think has_volatile_expr might be missing a
pg_node_attr(equal_ignore).

David