Fabrice Chapuis <fabrice636861@xxxxxxxxx> writes: > This query seems not resetting stats for databae mydb > SELECT pg_stat_statements_reset( > NULL, -- userid: NULL means "all users" > (SELECT oid FROM pg_database WHERE datname = 'mydb'), > NULL -- queryid: NULL means "all queries" > ); Where did you get the idea that NULL means "all"? AFAICS that function is strict, meaning it won't run at all for null input. regards, tom lane