On 13.06.2018 12:55, Vadim Nevorotin wrote:
Nested Loop Left Join (cost=0.82..26.41 rows=1 width=4) (actual time=49.290..49.297 rows=1 loops=1)
Join Filter: ((s_2.connamespace = n.oid) AND (s_2.conrelid = c.oid) AND (a.attnum = ANY (s_2.conkey)))
Buffers: shared hit=18
...
Planning time: 2.589 ms
Execution time: 49.467 ms (45 rows)
And there are two questions: why this problem occurs and how can I fix it?
You could catch a performance profile of this issue using perf tools and iterative executing this query in new sessions via pgbench, for example. T
his would greatly facilitate the search for the cause of your problem.--
Regards,
Maksim Milyutin