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Base de données relationnelle
An upcoming patch which changes how inheritance planning works requires adding a new function that does a similar job to set_append_rel_size() but for child target relations. To save it from having to duplicate the qual building code, move that to a separate function first. Here we also change things so that we never attempt to build security quals after detecting some const false child quals. We needlessly used to do this just before we marked the child relation as a dummy rel. In passing, this also moves the partition pruned check to before the qual building code. We don't need to build the child quals before we check if the partition has been pruned. Author: David Rowley Discussion: https://postgr.es/m/CAKJS1f_i+jrrD+if8qC7KPuTAAWsd=dtepgY_7u=P86GDEwm7A@mail.gmail.com |
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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/.