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In some cases, not all Vars were being correctly marked as having been modified for updatable security barrier views, which resulted in invalid plans (eg: when security barrier views were created over top of inheiritance structures). In passing, be sure to update both varattno and varonattno, as _equalVar won't consider the Vars identical otherwise. This isn't known to cause any issues with updatable security barrier views, but was noticed as missing while working on RLS and makes sense to get fixed. Back-patch to 9.4 where updatable security barrier views were introduced.
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: http://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 http://www.postgresql.org/download/. For more information look at our web site located at http://www.postgresql.org/.