f71a9969d5
When a table is partitioned, the previous code did not emit NO_GATHER advice for the parent table, on the theory that doing this for the child tables was good enough. However, it isn't. I believe what happened here is that, during development, I was planning to enforce NO_GATHER by clearing the consider_parallel flag for the children, which would have been good enough to ensure that parallelism could not be used at any higher level of the plan tree. Eventually, I switched course, but failed to realize that this code needed to be updated as a result. Do that, and add a regression test. 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/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/.