-- -- Track user activity and reset them -- SET pg_stat_statements.track_utility = TRUE; SELECT pg_stat_statements_reset(); pg_stat_statements_reset -------------------------- (1 row) CREATE ROLE regress_stats_user1; CREATE ROLE regress_stats_user2; SET ROLE regress_stats_user1; SELECT 1 AS "ONE"; ONE ----- 1 (1 row) SELECT 1+1 AS "TWO"; TWO ----- 2 (1 row) RESET ROLE; SET ROLE regress_stats_user2; SELECT 1 AS "ONE"; ONE ----- 1 (1 row) SELECT 1+1 AS "TWO"; TWO ----- 2 (1 row) RESET ROLE; SELECT query, calls, rows FROM pg_stat_statements ORDER BY query COLLATE "C"; query | calls | rows -----------------------------------+-------+------ CREATE ROLE regress_stats_user1 | 1 | 0 CREATE ROLE regress_stats_user2 | 1 | 0 RESET ROLE | 2 | 0 SELECT $1 AS "ONE" | 1 | 1 SELECT $1 AS "ONE" | 1 | 1 SELECT $1+$2 AS "TWO" | 1 | 1 SELECT $1+$2 AS "TWO" | 1 | 1 SELECT pg_stat_statements_reset() | 1 | 1 SET ROLE regress_stats_user1 | 1 | 0 SET ROLE regress_stats_user2 | 1 | 0 (10 rows) -- -- Don't reset anything if any of the parameter is NULL -- SELECT pg_stat_statements_reset(NULL); pg_stat_statements_reset -------------------------- (1 row) SELECT query, calls, rows FROM pg_stat_statements ORDER BY query COLLATE "C"; query | calls | rows ------------------------------------------------------------------------------+-------+------ CREATE ROLE regress_stats_user1 | 1 | 0 CREATE ROLE regress_stats_user2 | 1 | 0 RESET ROLE | 2 | 0 SELECT $1 AS "ONE" | 1 | 1 SELECT $1 AS "ONE" | 1 | 1 SELECT $1+$2 AS "TWO" | 1 | 1 SELECT $1+$2 AS "TWO" | 1 | 1 SELECT pg_stat_statements_reset($1) | 1 | 1 SELECT pg_stat_statements_reset() | 1 | 1 SELECT query, calls, rows FROM pg_stat_statements ORDER BY query COLLATE "C" | 1 | 10 SET ROLE regress_stats_user1 | 1 | 0 SET ROLE regress_stats_user2 | 1 | 0 (12 rows) -- -- remove query ('SELECT $1+$2 AS "TWO"') executed by regress_stats_user2 -- in the current_database -- SELECT pg_stat_statements_reset( (SELECT r.oid FROM pg_roles AS r WHERE r.rolname = 'regress_stats_user2'), (SELECT d.oid FROM pg_database As d where datname = current_database()), (SELECT s.queryid FROM pg_stat_statements AS s WHERE s.query = 'SELECT $1+$2 AS "TWO"' LIMIT 1)); pg_stat_statements_reset -------------------------- (1 row) SELECT query, calls, rows FROM pg_stat_statements ORDER BY query COLLATE "C"; query | calls | rows ----------------------------------------------------------------------------------+-------+------ CREATE ROLE regress_stats_user1 | 1 | 0 CREATE ROLE regress_stats_user2 | 1 | 0 RESET ROLE | 2 | 0 SELECT $1 AS "ONE" | 1 | 1 SELECT $1 AS "ONE" | 1 | 1 SELECT $1+$2 AS "TWO" | 1 | 1 SELECT pg_stat_statements_reset( +| 1 | 1 (SELECT r.oid FROM pg_roles AS r WHERE r.rolname = $1), +| | (SELECT d.oid FROM pg_database As d where datname = current_database()),+| | (SELECT s.queryid FROM pg_stat_statements AS s +| | WHERE s.query = $2 LIMIT $3)) | | SELECT pg_stat_statements_reset($1) | 1 | 1 SELECT pg_stat_statements_reset() | 1 | 1 SELECT query, calls, rows FROM pg_stat_statements ORDER BY query COLLATE "C" | 2 | 22 SET ROLE regress_stats_user1 | 1 | 0 SET ROLE regress_stats_user2 | 1 | 0 (12 rows) -- -- remove query ('SELECT $1 AS "ONE"') executed by two users -- SELECT pg_stat_statements_reset(0,0,s.queryid) FROM pg_stat_statements AS s WHERE s.query = 'SELECT $1 AS "ONE"'; pg_stat_statements_reset -------------------------- (2 rows) SELECT query, calls, rows FROM pg_stat_statements ORDER BY query COLLATE "C"; query | calls | rows ----------------------------------------------------------------------------------+-------+------ CREATE ROLE regress_stats_user1 | 1 | 0 CREATE ROLE regress_stats_user2 | 1 | 0 RESET ROLE | 2 | 0 SELECT $1+$2 AS "TWO" | 1 | 1 SELECT pg_stat_statements_reset( +| 1 | 1 (SELECT r.oid FROM pg_roles AS r WHERE r.rolname = $1), +| | (SELECT d.oid FROM pg_database As d where datname = current_database()),+| | (SELECT s.queryid FROM pg_stat_statements AS s +| | WHERE s.query = $2 LIMIT $3)) | | SELECT pg_stat_statements_reset($1) | 1 | 1 SELECT pg_stat_statements_reset($1,$2,s.queryid) +| 1 | 2 FROM pg_stat_statements AS s WHERE s.query = $3 | | SELECT pg_stat_statements_reset() | 1 | 1 SELECT query, calls, rows FROM pg_stat_statements ORDER BY query COLLATE "C" | 3 | 34 SET ROLE regress_stats_user1 | 1 | 0 SET ROLE regress_stats_user2 | 1 | 0 (11 rows) -- -- remove query of a user (regress_stats_user1) -- SELECT pg_stat_statements_reset(r.oid) FROM pg_roles AS r WHERE r.rolname = 'regress_stats_user1'; pg_stat_statements_reset -------------------------- (1 row) SELECT query, calls, rows FROM pg_stat_statements ORDER BY query COLLATE "C"; query | calls | rows ----------------------------------------------------------------------------------+-------+------ CREATE ROLE regress_stats_user1 | 1 | 0 CREATE ROLE regress_stats_user2 | 1 | 0 RESET ROLE | 2 | 0 SELECT pg_stat_statements_reset( +| 1 | 1 (SELECT r.oid FROM pg_roles AS r WHERE r.rolname = $1), +| | (SELECT d.oid FROM pg_database As d where datname = current_database()),+| | (SELECT s.queryid FROM pg_stat_statements AS s +| | WHERE s.query = $2 LIMIT $3)) | | SELECT pg_stat_statements_reset($1) | 1 | 1 SELECT pg_stat_statements_reset($1,$2,s.queryid) +| 1 | 2 FROM pg_stat_statements AS s WHERE s.query = $3 | | SELECT pg_stat_statements_reset() | 1 | 1 SELECT pg_stat_statements_reset(r.oid) +| 1 | 1 FROM pg_roles AS r WHERE r.rolname = $1 | | SELECT query, calls, rows FROM pg_stat_statements ORDER BY query COLLATE "C" | 4 | 45 SET ROLE regress_stats_user2 | 1 | 0 (10 rows) -- -- reset all -- SELECT pg_stat_statements_reset(0,0,0); pg_stat_statements_reset -------------------------- (1 row) SELECT query, calls, rows FROM pg_stat_statements ORDER BY query COLLATE "C"; query | calls | rows ----------------------------------------+-------+------ SELECT pg_stat_statements_reset(0,0,0) | 1 | 1 (1 row) -- -- cleanup -- DROP ROLE regress_stats_user1; DROP ROLE regress_stats_user2; SELECT pg_stat_statements_reset(); pg_stat_statements_reset -------------------------- (1 row)