afadfb3496
Given an Append or MergeAppend node, pgpa_build_scan needs to call pgpa_make_scan for the node's own apprelids, and also for each element of child_append_relid_sets. It did that, but it overlooked the fact that the scan type applicable to the child scans might differ from the scan type applicable to the parent scan. The problem can only occur in one direction: an RTE_SUBQUERY (Merge)Append can appear on top of a RTE_RELATION (Merge)Append, but not the reverse, so the only failure mode here is to classify a partitionwise scan of a child appendrel as PGPA_SCAN_ORDINARY rather than PGPA_SCAN_PARTITIONWISE, leading to failure to include PARTITIONWISE(something) in the generated advice string. Backpatch-through: 19 Discussion: http://postgr.es/m/CA+TgmoYYHC4i-Gpzc9-JYHqih6pOK+6LTYFiNR-PioXG1nKkOQ@mail.gmail.com
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/19/. In particular, information about building PostgreSQL from the source code can be found at https://www.postgresql.org/docs/19/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/.