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Base de données relationnelle
c66f4cff1a
If the variable's value is null, exec_stmt_return() missed filling in estate->rettype. This is a pretty old bug, but we'd managed not to notice because that value isn't consulted for a null result ... unless we have to cast it to a domain. That case led to a failure with "cache lookup failed for type 0". The correct way to assign the data type is known by exec_eval_datum. While we could copy-and-paste that logic, it seems like a better idea to just invoke exec_eval_datum, as the ROW case already does. Reported-by: Pavel Stehule <pavel.stehule@gmail.com> Author: Tom Lane <tgl@sss.pgh.pa.us> Discussion: https://postgr.es/m/CAFj8pRBT_ahexDf-zT-cyH8bMR_qcySKM8D5nv5MvTWPiatYGA@mail.gmail.com Backpatch-through: 14 |
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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/.