Hi, 

I initially applied this patch on the master branch at commit f95da9f, but I 
have noticed that the latest master branch already includes a fix for this 
issue. A similar patch was recently committed in e983ee9 successfully resolving 
this issue. Thanks for the update and assistance!

Thanks & Regards,


Ravi Revathy

Member Technical Staff

ZOHO Corporation





---- On Tue, 18 Mar 2025 14:56:48 +0530 Ilia Evdokimov 
<ilya.evdoki...@tantorlabs.com> wrote ---



Hi, 
 
On commit 122a9af I can't see any problem with query: 
 
explain analyze select * from t1 left join (select a, max(b) from t2 
group by a) t2 on t1.a = t2.a; 
                                                      QUERY PLAN 
---------------------------------------------------------------------------------------------------------------------
 
  Hash Right Join  (cost=397.65..669.04 rows=1000 width=12) (actual 
time=9.008..11.549 rows=1000.00 loops=1) 
    Hash Cond: (t2.a = t1.a) 
    Buffers: shared read=90 
    ->  HashAggregate  (cost=370.15..560.25 rows=19010 width=8) (actual 
time=8.103..10.160 rows=19010.00 loops=1) 
          Group Key: t2.a 
          Batches: 1  Memory Usage: 2321kB 
          Buffers: shared read=85 
          ->  Seq Scan on t2  (cost=0.00..275.10 rows=19010 width=8) 
(actual time=0.015..1.907 rows=19010.00 loops=1) 
                Buffers: shared read=85 
    ->  Hash  (cost=15.00..15.00 rows=1000 width=4) (actual 
time=0.365..0.366 rows=1000.00 loops=1) 
          Buckets: 1024  Batches: 1  Memory Usage: 44kB 
          Buffers: shared read=5 
          ->  Seq Scan on t1  (cost=0.00..15.00 rows=1000 width=4) 
(actual time=0.033..0.187 rows=1000.00 loops=1) 
                Buffers: shared read=5 
  Planning: 
    Buffers: shared hit=31 read=16 
  Planning Time: 0.751 ms 
  Execution Time: 12.599 ms 
(18 rows) 
 
-- 
Best regards, 
Ilia Evdokimov, 
Tantor Labs LLC.

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