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Jeff Janes noted that the error cursor position shown for some errors would vary when operator_precedence_warning is turned on. We'd prefer that option to have no undocumented effects, so this isn't desirable. To fix, make sure that an AEXPR_PAREN node has the same exprLocation as its child node. (Note: it would be a little cheaper to use @2 here instead of an exprLocation call, but there are cases where that wouldn't produce the identical answer, so don't do it like that.) Back-patch to 9.5 where this feature was introduced. Discussion: https://postgr.es/m/CAMkU=1ykK+VhhcQ4Ky8KBo9FoaUJH3f3rDQB8TkTXi-ZsBRUkQ@mail.gmail.com
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: http://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 http://www.postgresql.org/download/. For more information look at our web site located at http://www.postgresql.org/.