mirror of
https://github.com/postgres/postgres.git
synced 2025-06-02 00:01:40 -04:00
2d689babe3
An object found as dropped when digging into the list of objects returned by pg_event_trigger_ddl_commands() could cause a cache lookup error, as the calls grabbing for the object address and the type name would fail if the object was missing. Those lookup errors could be seen with combinations of ALTER TABLE sub-commands involving identity columns. The lookup logic is changed in this code path to get a behavior similar to any other SQL-callable function by ignoring objects that are not found, taking advantage of 2a10fdc. The back-branches are not changed, as they require this commit that is too invasive for stable branches. While on it, add test cases to exercise event triggers with identity columns, and stress more cases with the event ddl_command_end for relations. Author: Sven Klemm, Aleksander Alekseev, Michael Paquier Discussion: https://postgr.es/m/CAMCrgp2R1cEXU53iYKtW6yVEp2_yKUz+z=3-CTrYpPP+xryRtg@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/.