5ce5e4a12e
Commit 3fc6e2d7f5b652b417fa6937c34de2438d60fa9f introduced new "upper" RelOptInfo structures but didn't set consider_parallel for them correctly, a point I completely missed when reviewing it. Later, commit e06a38965b3bcdaa881e7e06892d4d8ab6c2c980 made the situation worse by doing it incorrectly for the grouping relation. Try to straighten all of that out. Along the way, get rid of the annoying wholePlanParallelSafe flag, which was only necessarily because of the fact that upper planning stages didn't use paths at the time that code was written. The most important immediate impact of these changes is that force_parallel_mode will provide useful test coverage in quite a few more scenarios than it did previously, but it's also necessary preparation for fixing some problems related to subqueries. Patch by me, reviewed by Tom Lane.
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. PostgreSQL has many language interfaces, many of which are listed here: http://www.postgresql.org/download See the file INSTALL for instructions on how to build and install PostgreSQL. That file also lists supported operating systems and hardware platforms and contains information regarding any other software packages that are required to build or run the PostgreSQL system. Copyright and license information can be found in the file COPYRIGHT. A comprehensive documentation set is included in this distribution; it can be read as described in the installation instructions. The latest version of this software may be obtained at http://www.postgresql.org/download/. For more information look at our web site located at http://www.postgresql.org/.