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Commit 5a991ef8692e accidentally reversed the order of the tuples and fields parameters, making the error message incorrectly refer to 3 tuples with 1 field when IDENTIFY_SYSTEM returns 1 tuple and 3 or 4 fields. Fix by changing the order of the parameters. This also adds a comment describing why we check for < 3 when postgres since 9.4 has been sending 4 fields. Backpatch all the way since the bug is almost a decade old. Author: Tomonari Katsumata <t.katsumata1122@gmail.com> Reviewed-by: Tom Lane <tgl@sss.pgh.pa.us> Bug: #18224 Backpatch-through: v12
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/.