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It wasn't all that clear which lock levels, if any, would be held on the DEFAULT partition during an ATTACH PARTITION operation. Also, clarify which locks will be taken if the DEFAULT partition or the table being attached are themselves partitioned tables. Here I'm only backpatching to v12 as before then we obtained an ACCESS EXCLUSIVE lock on the partitioned table. It seems much less relevant to mention which locks are taken on other tables when the partitioned table itself is locked with an ACCESS EXCLUSIVE lock. Author: Matthias van de Meent, David Rowley Discussion: https://postgr.es/m/CAEze2WiTB6iwrV8W_J=fnrnZ7fowW3qu-8iQ8zCHP3FiQ6+o-A@mail.gmail.com Backpatch-through: 12 |
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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/.