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particular user/db/query. The function pg_stat_statements_reset() is extended to accept userid, dbid, and queryid as input parameters. Now, it can discard the statistics gathered so far by pg_stat_statements corresponding to the specified userid, dbid, and queryid. If no parameter is specified or all the specified parameters have default value aka 0, it will discard all statistics as per the old behavior. The new behavior is useful to get the fresh statistics for a specific user/database/query without resetting all the existing statistics. Author: Haribabu Kommi, with few additional changes by me Reviewed-by: Michael Paquier, Amit Kapila and Fujii Masao Discussion: https://postgr.es/m/CAJrrPGcyh-gkFswyc6C661K6cknL0XkNqVT0sQt2mFNMR4HRKA@mail.gmail.com
The PostgreSQL contrib tree
---------------------------
This subtree contains porting tools, analysis utilities, and plug-in
features that are not part of the core PostgreSQL system, mainly
because they address a limited audience or are too experimental to be
part of the main source tree. This does not preclude their
usefulness.
User documentation for each module appears in the main SGML
documentation.
When building from the source distribution, these modules are not
built automatically, unless you build the "world" target. You can
also build and install them all by running "make all" and "make
install" in this directory; or to build and install just one selected
module, do the same in that module's subdirectory.
Some directories supply new user-defined functions, operators, or
types. To make use of one of these modules, after you have installed
the code you need to register the new SQL objects in the database
system by executing a CREATE EXTENSION command. In a fresh database,
you can simply do
CREATE EXTENSION module_name;
See the PostgreSQL documentation for more information about this
procedure.