postgresql/contrib/pg_stat_statements
Michael Paquier e217dc7484 Fix query jumbling with GROUP BY clauses
RangeTblEntry.groupexprs was marked with the node attribute
query_jumble_ignore, causing a list of GROUP BY expressions to be
ignored during the query jumbling.  For example, these two queries could
be grouped together within the same query ID:
SELECT count(*) FROM t GROUP BY a;
SELECT count(*) FROM t GROUP BY b;

However, as such queries use different GROUP BY clauses, they should be
split across multiple entries.

This fixes an oversight in 247dea89f7, that has introduced an RTE for
GROUP BY clauses.  Query IDs are documented as being stable across minor
releases, but as this is a regression new to v18 and that we are still
early in its support cycle, a backpatch is exceptionally done as this
has broken a behavior that exists since query jumbling is supported in
core, since its introduction in pg_stat_statements.

The tests of pg_stat_statements are expanded to cover this area, with
patterns involving GROUP BY and GROUPING clauses.

Author: Jian He <jian.universality@gmail.com>
Discussion: https://postgr.es/m/CACJufxEy2W+tCqC7XuJ94r3ivWsM=onKJp94kRFx3hoARjBeFQ@mail.gmail.com
Backpatch-through: 18
2026-01-14 08:44:12 +09:00
..
expected Fix query jumbling with GROUP BY clauses 2026-01-14 08:44:12 +09:00
sql Fix query jumbling with GROUP BY clauses 2026-01-14 08:44:12 +09:00
t Update copyright for 2026 2026-01-01 13:24:10 -05:00
.gitignore pg_stat_statements: Add .gitignore file for tests 2016-11-13 08:24:43 -05:00
Makefile pg_stat_statements: Add counters for generic and custom plans 2025-07-31 11:37:37 +09:00
meson.build Update copyright for 2026 2026-01-01 13:24:10 -05:00
pg_stat_statements--1.0--1.1.sql Fix typo in update scripts for some contrib modules. 2013-07-19 04:13:01 +09:00
pg_stat_statements--1.1--1.2.sql Keep pg_stat_statements' query texts in a file, not in shared memory. 2014-01-27 15:37:54 -05:00
pg_stat_statements--1.2--1.3.sql Add stats for min, max, mean, stddev times to pg_stat_statements. 2015-03-27 15:43:22 -04:00
pg_stat_statements--1.3--1.4.sql Update pg_stat_statements extension for parallel query. 2016-06-10 10:42:01 -04:00
pg_stat_statements--1.4--1.5.sql Default monitoring roles 2017-03-30 14:18:53 -04:00
pg_stat_statements--1.4.sql Update pg_stat_statements extension for parallel query. 2016-06-10 10:42:01 -04:00
pg_stat_statements--1.5--1.6.sql Revoke pg_stat_statements_reset() permissions 2018-09-25 09:55:44 +09:00
pg_stat_statements--1.6--1.7.sql Extend pg_stat_statements_reset to reset statistics specific to a 2019-01-11 08:50:09 +05:30
pg_stat_statements--1.7--1.8.sql Change the display of WAL usage statistics in Explain. 2020-05-05 08:00:53 +05:30
pg_stat_statements--1.8--1.9.sql Merge v1.10 of pg_stat_statements into v1.9 2021-04-08 15:15:17 +02:00
pg_stat_statements--1.9--1.10.sql Add JIT counters to pg_stat_statements 2022-04-08 13:52:16 +02:00
pg_stat_statements--1.10--1.11.sql Track statement entry timestamp in contrib/pg_stat_statements 2023-11-27 02:52:17 +02:00
pg_stat_statements--1.11--1.12.sql pg_stat_statements: Add wal_buffers_full 2025-02-17 13:55:17 +09:00
pg_stat_statements--1.12--1.13.sql pg_stat_statements: Add counters for generic and custom plans 2025-07-31 11:37:37 +09:00
pg_stat_statements.c instrumentation: Keep time fields as instrtime, convert in callers 2026-01-09 13:38:00 -05:00
pg_stat_statements.conf Revert "pg_stat_statements: Add coverage for entry_dealloc()" 2023-12-31 15:30:57 +01:00
pg_stat_statements.control pg_stat_statements: Add counters for generic and custom plans 2025-07-31 11:37:37 +09:00