5f6f951f88
The Self-Join Elimination SJE feature messes up keeping and removing RowMark's in remove_self_joins_one_group(). That didn't lead to user-level error, because the planned RowMark is only used to reference a rtable entry in later execution stages. An RTE entry for keeping and removing relations is identical and refers to the same relation OID. To reduce confusion and prevent future issues, this commit cleans up the code and fixes the incorrect behaviour. Furthermore, it includes sanity checks in setrefs.c on existing non-null RTE and RelOptInfo entries for each RowMark. Discussion: https://postgr.es/m/18c6bd6c-6d2a-419a-b0da-dfedef34b585%40gmail.com Author: Andrei Lepikhov <lepihov@gmail.com> Reviewed-by: Greg Sabino Mullane <htamfids@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/devel/. In particular, information about building PostgreSQL from the source code can be found at https://www.postgresql.org/docs/devel/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/.