From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
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To: | nikhil raj <nikhilraj474(at)gmail(dot)com> |
Cc: | "pgsql-generallists(dot)postgresql(dot)org" <pgsql-general(at)lists(dot)postgresql(dot)org>, NIKITA PATEL <patelnikita1411(at)gmail(dot)com>, Patel Khushbu <patelkhushbu2067(at)gmail(dot)com> |
Subject: | Re: Significant Execution Time Difference Between PG13.14 and PG16.4 for Query on information_schema Tables. |
Date: | 2024-08-27 01:40:13 |
Message-ID: | 2962669.1724722813@sss.pgh.pa.us |
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Lists: | pgsql-general pgsql-hackers |
nikhil raj <nikhilraj474(at)gmail(dot)com> writes:
> I've encountered a noticeable difference in execution time and query
> execution plan row counts between PostgreSQL 13 and PostgreSQL 16 when
> running a query on information_schema tables. Surprisingly, PostgreSQL 16
> is performing slower than PostgreSQL 13.
Yeah, it looks like that condition on "table_name" is not getting
pushed down to the scan level anymore. I'm not sure why not,
but will look closer tomorrow.
regards, tom lane
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