0c1af2c35c
0452b461bc made optimizer explore alternative orderings of group-by pathkeys. The PathKeyInfo data structure was used to store the particular ordering of group-by pathkeys and corresponding clauses. It turns out that PathKeyInfo is not the best name for that purpose. This commit renames this data structure to GroupByOrdering, and revises its comment. Discussion: https://postgr.es/m/db0fc3a4-966c-4cec-a136-94024d39212d%40postgrespro.ru Reported-by: Tom Lane Author: Andrei Lepikhov Reviewed-by: Alexander Korotkov, Pavel Borisov
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/.