9c3caad026
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 247dea89f761, 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
PostgreSQL Database Management System
This directory contains the source code distribution of the PostgreSQL database management system.
PostgreSQL is an advanced object-relational database management system that supports an extended subset of the SQL standard, including transactions, foreign keys, subqueries, triggers, user-defined types and functions. This distribution also contains C language bindings.
Copyright and license information can be found in the file COPYRIGHT.
General documentation about this version of PostgreSQL can be found at https://www.postgresql.org/docs/18/. In particular, information about building PostgreSQL from the source code can be found at https://www.postgresql.org/docs/18/installation.html.
The latest version of this software, and related software, may be obtained at https://www.postgresql.org/download/. For more information look at our web site located at https://www.postgresql.org/.