a04ddd077e
There is a hook called ExplainOneQuery_hook that gives modules the possibility to plug into this code path, but, like utility.c for utility statement execution, there is no corresponding "standard" routine in the case of EXPLAIN executed for one Query. This commit adds a new standard_ExplainOneQuery() in explain.c, which is able to run explain on a non-utility Query without calling its hook. Per the feedback received from a couple of hackers, this change gives the possibility to cut a few hundred lines of code in some of the popular out-of-core modules as these maintained a copy of ExplainOneQuery(), adding custom extra information at the beginning or the end of the EXPLAIN output. Author: Mats Kindahl Reviewed-by: Aleksander Alekseev, Jelte Fennema-Nio, Andrei Lepikhov Discussion: https://postgr.es/m/CA+14427V_B4EAoC_o-iYYucRdMSOTfpuH9k-QbexffY1HYJBiA@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.
Copyright and license information can be found in the file COPYRIGHT.
General documentation about this version of PostgreSQL can be found at:
https://www.postgresql.org/docs/devel/
In particular, information about building PostgreSQL from the source
code can be found at:
https://www.postgresql.org/docs/devel/installation.html
The latest version of this software, and related software, may be obtained at https://www.postgresql.org/download/. For more information look at our web site located at https://www.postgresql.org/.