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We allow INSERT and UPDATE commands to assign to the same column more than once, as long as the assignments are to subfields or elements rather than the whole column. However, this failed when the target column was a domain over array rather than plain array. Fix by teaching process_matched_tle() to look through CoerceToDomain nodes, and add relevant test cases. Also add a group of test cases exercising domains over array of composite. It's doubtless accidental that CREATE DOMAIN allows this case while not allowing straight domain over composite; but it does, so we'd better make sure we don't break it. (I could not find any documentation mentioning either side of that, so no doc changes.) It's been like this for a long time, so back-patch to all supported branches. Discussion: https://postgr.es/m/4206.1499798337@sss.pgh.pa.us |
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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/.