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Currently, we simply combine the column lists when publishing tables on multiple publications and that can sometimes lead to unexpected behavior. Say, if a column is published in any row-filtered publication, then the values for that column are sent to the subscriber even for rows that don't match the row filter, as long as the row matches the row filter for any other publication, even if that other publication doesn't include the column. The main purpose of introducing a column list is to have statically different shapes on publisher and subscriber or hide sensitive column data. In both cases, it doesn't seem to make sense to combine column lists. So, we disallow the cases where the column list is different for the same table when combining publications. It can be later extended to combine the column lists for selective cases where required. Reported-by: Alvaro Herrera Author: Hou Zhijie Reviewed-by: Amit Kapila Discussion: https://postgr.es/m/202204251548.mudq7jbqnh7r@alvherre.pgsql |
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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/.