CREATE EXTENSION pg_stat_monitor;
CREATE DATABASE db1;
CREATE DATABASE db2;
\c db1
CREATE TABLE t1 (a int);
CREATE TABLE t2 (b int);
\c db2
CREATE TABLE t3 (c int);
CREATE TABLE t4 (d int);
\c contrib_regression
SELECT pg_stat_monitor_reset();
 pg_stat_monitor_reset 
-----------------------
 
(1 row)

\c db1
SELECT * FROM t1,t2 WHERE t1.a = t2.b;
 a | b 
---+---
(0 rows)

\c db2
SELECT * FROM t3,t4 WHERE t3.c = t4.d;
 c | d 
---+---
(0 rows)

\c contrib_regression
SELECT datname, query FROM pg_stat_monitor ORDER BY query COLLATE "C";
      datname       |                                 query                                 
--------------------+-----------------------------------------------------------------------
 db1                | SELECT * FROM t1,t2 WHERE t1.a = t2.b
 db2                | SELECT * FROM t3,t4 WHERE t3.c = t4.d
 contrib_regression | SELECT datname, query FROM pg_stat_monitor ORDER BY query COLLATE "C"
 contrib_regression | SELECT pg_stat_monitor_reset()
(4 rows)

SELECT pg_stat_monitor_reset();
 pg_stat_monitor_reset 
-----------------------
 
(1 row)

\c db1
DROP TABLE t1;
DROP TABLE t2;
\c db2
DROP TABLE t3;
DROP TABLE t4;
\c contrib_regression
DROP DATABASE db1;
DROP DATABASE db2;
DROP EXTENSION pg_stat_monitor;