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Base de données relationnelle
1dec7c7c6c
Views should not have any pg_attribute entries for system columns. However, we forgot to remove such entries when converting a table to a view. This could lead to crashes later on, if someone attempted to reference such a column, as reported by Kohei KaiGai. This problem is corrected properly in HEAD (by removing the pg_attribute entries during conversion), but in the back branches we need to defend against existing mis-converted views. This fix costs us an extra syscache lookup per system column reference, which is annoying but probably not really measurable in the big scheme of things. |
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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: 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. Changes between all PostgreSQL releases are recorded in the file HISTORY. 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/.