Re: Apply the "LIMIT 1" optimization to partial DISTINCT

On Wed, Jan 31, 2024 at 12:26 PM David Rowley <dgrowleyml@gmail.com> wrote:

> On Fri, 26 Jan 2024 at 21:14, David Rowley <dgrowleyml@gmail.com> wrote:
> > However, having said that. Parallel plans are often picked when there
> > is some highly selective qual as parallel_tuple_cost has to be applied
> > to fewer tuples for such plans, so probably this is worth doing.
>
> I was messing around with your test case and didn't manage to get any
> plan that had any rows to use the partial path with the LIMIT.  I
> ended up dropping the test that was checking the results were empty as
> I didn't think it added much more value over the EXPLAIN output.
>
> I pushed the result.


Thanks for pushing it!

Thanks
Richard