postgresql/contrib/pg_stat_statements
Michael Paquier 3304e97b1b pg_stat_statements: Fix crash in list squashing with Vars
When IN/ANY clauses contain both constants and variable expressions, the
optimizer transforms them into separate structures: constants become
an array expression while variables become individual OR conditions.

This transformation was creating an overlap with the token locations,
causing pg_stat_statements query normalization to crash because it
could not calculate the amount of bytes remaining to write for the
normalized query.

This commit disables squashing for mixed IN list expressions when
constructing a scalar array op, by setting list_start and list_end
to -1 when both variables and non-variables are present.  Some
regression tests are added to PGSS to verify these patterns.

Author: Sami Imseih <samimseih@gmail.com>
Reviewed-by: Dmitry Dolgov <9erthalion6@gmail.com>
Discussion: https://postgr.es/m/CAA5RZ0ts9qiONnHjjHxPxtePs22GBo4d3jZ_s2BQC59AN7XbAA@mail.gmail.com
Backpatch-through: 18
2026-01-20 08:11:16 +09:00
..
expected pg_stat_statements: Fix crash in list squashing with Vars 2026-01-20 08:11:16 +09:00
sql pg_stat_statements: Fix crash in list squashing with Vars 2026-01-20 08:11:16 +09:00
t Update copyright for 2025 2025-01-01 11:21:55 -05:00
.gitignore pg_stat_statements: Add .gitignore file for tests 2016-11-13 08:24:43 -05:00
Makefile Introduce squashing of constant lists in query jumbling 2025-03-18 18:56:11 +01:00
meson.build Introduce squashing of constant lists in query jumbling 2025-03-18 18:56:11 +01:00
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.c pg_stat_statements: Fix handling of duplicate constant locations 2025-10-29 12:35:02 +01:00
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 columns to track parallel worker activity 2024-10-09 08:30:45 +09:00