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Before those commits, partitioning-related code in the executor could assume that ModifyTableState.resultRelInfo[] contains only leaf partitions. However, now a fully-pruned update results in a dummy ModifyTable that references the root partitioned table, and that breaks some stuff. In v11, this led to an assertion or core dump in the tuple routing code. Fix by disabling tuple routing, since we don't need that anyway. (I chose to do that in HEAD as well for safety, even though the problem doesn't manifest in HEAD as it stands.) In v10, this confused ExecInitModifyTable's decision about whether it needed to close the root table. But we can get rid of that altogether by being smarter about where to find the root table. Note that since the referenced commits haven't shipped yet, this isn't fixing any bug the field has seen. Amit Langote, per a report from me Discussion: https://postgr.es/m/20710.1554582479@sss.pgh.pa.us |
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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/.