35e53b6841
Some recent changes were made to remove the explicit dependency on btree indexes in some parts of the code. One of these changes was made in commit9ef1851685, which allows non-btree indexes to be used in get_actual_variable_range(). A follow-up commitee1ae8b99ffixes the cases where an index doesn’t have a sortopfamily as this is a prerequisite to be used in get_actual_variable_range(). However, it was found that indexes that have amcanorder = true but do not allow index-only-scans (amcanreturn returns false or is NULL) will pass all of the conditions, while they should be rejected since get_actual_variable_range() uses the index-only-scan machinery in get_actual_variable_endpoint(). Such an index might cause errors like ERROR: no data returned for index-only scan during query planning. The fix is to add a check in get_actual_variable_range() to reject indexes that do not allow index-only scans. Author: Maxime Schoemans <maxime.schoemans@enterprisedb.com> Discussion: https://www.postgresql.org/message-id/flat/20ED852A-C2D9-41EB-8671-8C8B9D418BE9%40enterprisedb.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/.