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Ordinarily, a pg_policy.polroles array wouldn't list the same role more than once; but CREATE POLICY does not prevent that. If we perform DROP OWNED BY on a role that is listed more than once, RemoveRoleFromObjectPolicy either suffered an assertion failure or encountered a tuple-updated-by-self error. Rewrite it to cope correctly with duplicate entries, and add a CommandCounterIncrement call to prevent the other problem. Per discussion, there's other cleanup that ought to happen here, but this seems like the minimum essential fix. Per bug #17062 from Alexander Lakhin. It's been broken all along, so back-patch to all supported branches. Discussion: https://postgr.es/m/17062-11f471ae3199ca23@postgresql.org |
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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/.