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Since the executor can't cope with a utility statement appearing as a node of a plan tree, we can't support cases where a rewrite rule inserts a NOTIFY into an INSERT/UPDATE/DELETE command appearing in a WITH clause of a larger query. (One can imagine ways around that, but it'd be a new feature not a bug fix, and so far there's been no demand for it.) RewriteQuery checked for this, but it missed the case where the DML command rewrites to *only* a NOTIFY. That'd lead to crashes later on in planning. Add the missed check, and improve the level of testing of this area. Per bug #17094 from Yaoguang Chen. It's been busted since WITH was introduced, so back-patch to all supported branches. Discussion: https://postgr.es/m/17094-bf15dff55eaf2e28@postgresql.org |
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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/.