blob: 4e0fe6c8f24a7f1aaed8bc5ff99a628066e5cd7e (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
|
select * from performance_schema.events_stages_summary_by_thread_by_event_name
where event_name like 'stage/%' limit 1;
select * from performance_schema.events_stages_summary_by_thread_by_event_name
where event_name='FOO';
insert into performance_schema.events_stages_summary_by_thread_by_event_name
set event_name='FOO', thread_id=1,
count_star=1, sum_timer_wait=2, min_timer_wait=3,
avg_timer_wait=4, max_timer_wait=5;
ERROR 42000: INSERT command denied to user 'root'@'localhost' for table 'events_stages_summary_by_thread_by_event_name'
update performance_schema.events_stages_summary_by_thread_by_event_name
set count_star=12;
ERROR 42000: UPDATE command denied to user 'root'@'localhost' for table 'events_stages_summary_by_thread_by_event_name'
update performance_schema.events_stages_summary_by_thread_by_event_name
set count_star=12 where event_name like "FOO";
ERROR 42000: UPDATE command denied to user 'root'@'localhost' for table 'events_stages_summary_by_thread_by_event_name'
delete from performance_schema.events_stages_summary_by_thread_by_event_name
where count_star=1;
ERROR 42000: DELETE command denied to user 'root'@'localhost' for table 'events_stages_summary_by_thread_by_event_name'
delete from performance_schema.events_stages_summary_by_thread_by_event_name;
ERROR 42000: DELETE command denied to user 'root'@'localhost' for table 'events_stages_summary_by_thread_by_event_name'
LOCK TABLES performance_schema.events_stages_summary_by_thread_by_event_name READ;
ERROR 42000: SELECT, LOCK TABLES command denied to user 'root'@'localhost' for table 'events_stages_summary_by_thread_by_event_name'
UNLOCK TABLES;
LOCK TABLES performance_schema.events_stages_summary_by_thread_by_event_name WRITE;
ERROR 42000: SELECT, LOCK TABLES command denied to user 'root'@'localhost' for table 'events_stages_summary_by_thread_by_event_name'
UNLOCK TABLES;
#
# MDEV-25325 column_comment for performance_schema tables
#
select column_name, column_comment
from information_schema.columns
where table_schema='performance_schema' and table_name='events_stages_summary_by_thread_by_event_name';
column_name column_comment
THREAD_ID Thread associated with the event. Together with EVENT_NAME uniquely identifies the row.
EVENT_NAME Event name. Used together with THREAD_ID for grouping events.
COUNT_STAR Number of summarized events, which includes all timed and untimed events.
SUM_TIMER_WAIT Total wait time of the timed summarized events.
MIN_TIMER_WAIT Minimum wait time of the timed summarized events.
AVG_TIMER_WAIT Average wait time of the timed summarized events.
MAX_TIMER_WAIT Maximum wait time of the timed summarized events.
|
