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This commit adds query_string argument into the planner-related functions and hook and allows us to pass the query string to them. Currently there is no user of the query string passed. But the upcoming patch for the planning counters will add the planning hook function into pg_stat_statements and the function will need the query string. So this change will be necessary for that patch. Also this change is useful for some extensions that want to use the query string in their planner hook function. Author: Pascal Legrand, Julien Rouhaud Reviewed-by: Yoshikazu Imai, Tom Lane, Fujii Masao Discussion: https://postgr.es/m/CAOBaU_bU1m3_XF5qKYtSj1ua4dxd=FWDyh2SH4rSJAUUfsGmAQ@mail.gmail.com Discussion: https://postgr.es/m/1583789487074-0.post@n3.nabble.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: 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/.