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bad4943802
In non-TEXT output formats, the "Settings" field should appear when requested, even if it would be empty. Also, get rid of the premature optimization of counting all the GUC_EXPLAIN variables at startup. Since there was no provision for adjusting that count later, all it'd take would be some extension marking a parameter as GUC_EXPLAIN to risk an assertion failure or memory stomp. We could make get_explain_guc_options() count those variables on-the-fly, or dynamically resize its array ... but TBH I do not think that making a transient array of pointers a bit smaller is worth any extra complication, especially when you consider all the other transient space EXPLAIN eats. So just allocate that array at the max possible size. In HEAD, also add some regression test coverage for this feature. Because of the memory-stomp hazard, back-patch to v12 where this feature was added. Discussion: https://postgr.es/m/19416.1580069629@sss.pgh.pa.us |
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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/.