Re: POC, WIP: OR-clause support for indexes - Mailing list pgsql-hackers

On 16/2/2024 07:00, jian he wrote:
> On Wed, Feb 14, 2024 at 11:21 AM Andrei Lepikhov
> <a.lepikhov@postgrespro.ru> wrote:
> My OS: Ubuntu 22.04.3 LTS
> I already set the max_parallel_workers_per_gather to 10.
> So for all cases, it should use parallelism first?
> 
> a better question would be:
> how to make the number of OR less than 29 still faster when
> enable_or_transformation is ON by only set parameters?
In my test environment this example gives some subtle supremacy to ORs 
over ANY with only 3 ors and less.
Please, provide next EXPLAIN ANALYZE results for the case you want to 
discuss here:
1. with enable_or_transformation enabled
2. with enable_or_transformation disabled
3. with enable_or_transformation disabled but with manual transformation 
OR -> ANY done, to check the overhead of this optimization.

-- 
regards,
Andrei Lepikhov
Postgres Professional