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This commit adds "stats_reset" column into the pg_stat_statements_info view. This column indicates the time at which all statistics in the pg_stat_statements view were last reset. Per discussion, this commit also changes pg_stat_statements_info code so that "dealloc" column is reset at the same time as "stats_reset" is reset, i.e., whenever all pg_stat_statements entries are removed, for the sake of consistency. Previously "dealloc" was reset only when pg_stat_statements_reset(0, 0, 0) is called and was not reset when pg_stat_statements_reset() with non-zero value argument discards all entries. This was confusing. Author: Naoki Nakamichi, Yuki Seino Reviewed-by: Yuki Seino, Kyotaro Horiguchi, Li Japin, Fujii Masao Discussion: https://postgr.es/m/c102cf3180d0ee73c1c5a0f7f8558322@oss.nttdata.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. 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/.