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It is possible to reach check_sql_fn_retval() with an unresolved polymorphic rettype, resulting in an assertion failure as demonstrated by one of the added test cases. However, the code following that throws what seems an acceptable error message, so just remove the Assert and adjust commentary. While here, I thought it'd be a good idea to provide some parallel tests of SQL-function and PL/pgSQL-function polymorphism behavior. Some of these cases are perhaps duplicative of tests elsewhere, but we hadn't any organized coverage of the topic AFAICS. Although that assertion's been wrong all along, it won't have any effect in production builds, so I'm not bothering to back-patch. Discussion: https://postgr.es/m/21569.1584314271@sss.pgh.pa.us |
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README.git |
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/.