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Since commit 69f4b9c85f168ae006929eec44fc44d569e846b9, the existing code was no longer assessing the parallel-safety of the real tlist for each upper rel, but rather the first of possibly several tlists created by split_pathtarget_at_srfs(). Repair. Even though this is clearly wrong, it's not clear that it has any user-visible consequences at the moment, so no back-patch for now. If we discover later that it does have user-visible consequences, we might need to back-patch this to v10. Patch by me, per a report from Rajkumar Raghuwanshi. Discussion: http://postgr.es/m/CA+Tgmoaob_Strkg4Dcx=VyxnyXtrmkV=ofj=pX7gH9hSre-g0Q@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. PostgreSQL has many language interfaces, many of which are listed here: https://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 https://www.postgresql.org/download/. For more information look at our web site located at https://www.postgresql.org/.