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This function has been incorrectly marked as a set-returning function with prorows (estimated number of rows) set to 1 since its creation in 7117685, that introduced non-exclusive backups. There is no need for that as the function is designed to return only one tuple. This commit fixes the catalog definition of pg_stop_backup_v2() so as it is not marked as proretset anymore, with prorows set to 0. This simplifies its internals by removing one tuplestore (used for one single record anyway) and by removing all the checks related to a set-returning function. Issue found during my quest to simplify some of the logic used in in-core system functions. Bump catalog version. Reviewed-by: Aleksander Alekseev, Kyotaro Horiguchi Discussion: https://postgr.es/m/Yh8guT78f1Ercfzw@paquier.xyz
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/.