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When a partition is created as part of a trigger processing, it is possible that the partition which just gets created changes the properties of the table the executor of the ongoing command relies on, causing a subsequent crash. This has been found possible when for example using a BEFORE INSERT which creates a new partition for a partitioned table being inserted to. Any attempt to do so is blocked when working on a partition, with regression tests added for both CREATE TABLE PARTITION OF and ALTER TABLE ATTACH PARTITION. Reported-by: Dmitry Shalashov Author: Amit Langote Reviewed-by: Michael Paquier, Tom Lane Discussion: https://postgr.es/m/15437-3fe01ee66bd1bae1@postgresql.org Backpatch-through: 10 |
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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/.