install soname 'query_response_time';

set query_response_time_session_stats= on;

explain delete from mysql.db;

select sum(read_count), sum(write_count) from information_schema.query_response_time_read_write;

# Cleanup

uninstall soname 'query_response_time';

explain delete from mysql.db;

id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	0	Deleting all rows

select sum(read_count), sum(write_count) from information_schema.query_response_time_read_write;

sum(read_count)	sum(write_count)

1	1