Re: Use merge-based matching for MCVs in eqjoinsel - Mailing list pgsql-hackers

From Ilia Evdokimov
Subject Re: Use merge-based matching for MCVs in eqjoinsel
Date
Msg-id bb65fa03-fc84-48b9-b610-702034a435f4@tantorlabs.com
Whole thread Raw
In response to Re: Use merge-based matching for MCVs in eqjoinsel  (David Geier <geidav.pg@gmail.com>)
List pgsql-hackers
Hi David,

On 27.10.2025 18:50, David Geier wrote:
> Hi Ilia!
>
> On 10.09.2025 15:56, Ilia Evdokimov wrote:
>> LGTM. Yes, I'll test this patch.
>>
>>
>>
>> Unfortunately, the JOB benchmark does not contain semi join nodes.
>> However, TPC-DS does. I'll look for the queries with slowest planner
>> times there and check them.
>>
>> I'll need some time to check both join and semi join cases with small
>> and large default_statistics_target. I'll share the results later.
>>
> Have you had a chance to test above things?

Yes, I wrote about this here: 
https://www.postgresql.org/message-id/c3dbf2ab-d72d-4033-822a-60ad8023f499%40tantorlabs.com

--
Best regards,
Ilia Evdokimov,
Tantor Labs LLC,
https://tantorlabs.com/




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