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We have always created a whole-table dependency for the target relation, but that's not really good enough, as it doesn't prevent scenarios such as dropping an individual target column or altering its type. So we have to create an individual dependency for each target column, as well. Per report from Bill MacArthur of a rule containing UPDATE breaking after such an alteration. Note that this patch doesn't try to make such cases work, only to ensure that the attempted ALTER TABLE throws an error telling you it can't cope with adjusting the rule. This is a long-standing bug, but given the lack of prior reports I'm not going to risk back-patching it. A back-patch wouldn't do anything to fix existing rules' dependency lists, anyway. |
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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/.