ce95c54376
A TOAST table can normally have only one index, but there are corner cases where it has more; for example, transiently during REINDEX CONCURRENTLY. In such a case, the pg_statio_all_tables view produced multiple rows for the owning table, one per TOAST index. Refactor the view to avoid that, instead summing the stats across all the indexes, as we do for regular table indexes. While this has been wrong for a long time, back-patching seems unwise due to the difficulty of putting a system view change into back branches. Andrei Zubkov, tweaked a bit by me Discussion: https://postgr.es/m/acefef4189706971fc475f912c1afdab1c48d627.camel@moonset.ru
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/.