mysql.slow_log Table
The mysql.slow_log table stores the contents of the Slow Query Log if slow logging is active and the output is being written to table (see Writing logs into tables).
It contains the following fields:
| Field | Type | Null | Key | Default | Description |
|---|---|---|---|---|---|
start_time |
timestamp(6) |
NO | CURRENT_TIMESTAMP(6) |
Time the query began. | |
user_host |
mediumtext |
NO | NULL |
User and host combination. | |
query_time |
time(6) |
NO | NULL |
Total time the query took to execute. | |
lock_time |
time(6) |
NO | NULL |
Total time the query was locked. | |
rows_sent |
int(11) |
NO | NULL |
Number of rows sent. | |
rows_examined |
int(11) |
NO | NULL |
Number of rows examined. | |
db |
varchar(512) |
NO | NULL |
Default database. | |
last_insert_id |
int(11) |
NO | NULL |
last_insert_id. | |
insert_id |
int(11) |
NO | NULL |
Insert id. | |
server_id |
int(10) unsigned |
NO | NULL |
The server's id. | |
sql_text |
mediumtext |
NO | NULL |
Full query. | |
thread_id |
bigint(21) unsigned |
NO | NULL |
Thread id. | |
rows_affected |
int(11) |
NO | NULL |
Number of rows affected by an UPDATE or DELETE (from MariaDB 10.1.2) |
Example
SELECT * FROM mysql.slow_log\G
...
*************************** 2. row ***************************
start_time: 2014-11-11 07:56:28.721519
user_host: root[root] @ localhost []
query_time: 00:00:12.000215
lock_time: 00:00:00.000000
rows_sent: 1
rows_examined: 0
db: test
last_insert_id: 0
insert_id: 0
server_id: 1
sql_text: SELECT SLEEP(12)
thread_id: 74
...
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https://mariadb.com/kb/en/mysqlslow_log-table/