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When CREATE OR REPLACE VIEW acts on an existing view, don't update the view options until after the view query has been updated. This is necessary in the case where CREATE OR REPLACE VIEW is used on an existing view that is not updatable, and the new view is updatable and specifies the WITH CHECK OPTION. In this case, attempting to apply the new options to the view before updating its query fails, because the options are applied using the ALTER TABLE infrastructure which checks that WITH CHECK OPTION is only applied to an updatable view. If new columns are being added to the view, that is also done using the ALTER TABLE infrastructure, but it is important that that still be done before updating the view query, because the rules system checks that the query columns match those on the view relation. Added a comment to explain that, in case someone is tempted to move that to where the view options are now being set. Back-patch to 9.4 where WITH CHECK OPTION was added. Report: https://postgr.es/m/CAEZATCUp%3Dz%3Ds4SzZjr14bfct_bdJNwMPi-gFi3Xc5k1ntbsAgQ%40mail.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: 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/.