CREATE EXTENSION pg_stat_monitor;
SET pg_stat_monitor.pgsm_track='all';
SELECT pg_stat_monitor_reset();
 pg_stat_monitor_reset 
-----------------------
 
(1 row)

CREATE OR REPLACE FUNCTION test() RETURNS VOID AS
$$
BEGIN
	PERFORM 1 + 2;
END; $$ language plpgsql;
CREATE OR REPLACE FUNCTION test2() RETURNS VOID AS
$$
BEGIN
	PERFORM 1 + 2;
END; $$ language plpgsql;
SELECT pg_stat_monitor_reset(); 
 pg_stat_monitor_reset 
-----------------------
 
(1 row)

SELECT test(); 
 test 
------
 
(1 row)

SELECT test2();  	
 test2 
-------
 
(1 row)

SELECT 1 + 2;
 ?column? 
----------
        3
(1 row)

SELECT left(query, 15) as query, calls, top_query, pgsm_query_id FROM pg_stat_monitor ORDER BY query, top_query COLLATE "C";
      query      | calls |    top_query    |    pgsm_query_id     
-----------------+-------+-----------------+----------------------
 SELECT 1 + 2    |     1 | SELECT test();  |  5193804135051352284
 SELECT 1 + 2    |     1 | SELECT test2(); |  5193804135051352284
 SELECT 1 + 2    |     1 |                 |  5193804135051352284
 SELECT pg_stat_ |     1 |                 |   689150021118383254
 SELECT test()   |     1 |                 | -6801876889834540522
 SELECT test2()  |     1 |                 |   369102705908374543
(6 rows)

DROP EXTENSION pg_stat_monitor;