4.创建事件调度每5秒在表中插入数据
MySQL> create event if not exists event_t1 on schedule every 5 second do insert into t values(1,1,sysdate());
Query OK, 0 rows affected (0.01 sec)
mysql> select * from t;--查看事件执行数据
+------+------+---------------------+
| a | b | c |
+------+------+---------------------+
| 1 | 1 | -11-12 15:33:31 |
| 1 | 1 | -11-12 15:33:36 |
| 1 | 1 | -11-12 15:33:41 |
| 1 | 1 | -11-12 15:33:46 |
| 1 | 1 | -11-12 15:33:51 |
| 1 | 1 | -11-12 15:33:56 |
| 1 | 1 | -11-12 15:34:01 |
+------+------+---------------------+
7 rows in set (0.00 sec)
mysql>
5.创建事件调度10秒钟后删除t表中所有数据
mysql> create event if not exists event_t2 on schedule every 10 second do truncate table t;
Query OK, 0 rows affected (0.00 sec)
mysql> select * from t;
+------+------+---------------------+
| a | b | c |
+------+------+---------------------+
| 1 | 1 | -11-12 15:36:36 |
| 1 | 1 | -11-12 15:36:41 |
+------+------+---------------------+
2 rows in set (0.00 sec)
mysql> select * from t;
Empty set (0.00 sec)
mysql>
6.在指定时间删除t表数据
mysql> create event if not exists event_t2 on schedule at timestamp '-11-12 15:39:00' do truncate table t;;
Query OK, 0 rows affected, 1 warning (0.02 sec)
mysql> select * from t;
Empty set (0.00 sec)
mysql>
7.创建事件调度每天删除t表数据
mysql> create event if not exists event_t2 on schedule every 1 day do truncate table t;
Query OK, 0 rows affected, 1 warning (0.00 sec)
mysql> select * from t;
Empty set (0.00 sec)
mysql>
8.创建事件调度5天后开启删除t表中数据,一个月后停止
mysql> create event if not exists event_t2 on schedule every 1 day starts current_timestamp + interval 5 day ends current_timestamp + interval 1 month do truncate table t;
Query OK, 0 rows affected, 1 warning (0.00 sec)
mysql>
9.禁用事件调度器
mysql> alter event event_t2 disable;
Query OK, 0 rows affected (0.00 sec)
mysql>
10.启用事件调度器
mysql> alter event event_t2 enable;
Query OK, 0 rows affected (0.00 sec)
mysql>
11.修改事件调度器10天后启用
mysql> alter event event_t2 on schedule every 10 day;
Query OK, 0 rows affected (0.00 sec)
mysql>
12.重命名事件调度器
mysql> alter event event_t2 rename to event_t1;
Query OK, 0 rows affected (0.00 sec)
mysql>
13.查看事件调度器的信息
mysql> show events like "event_t1" \G;
*************************** 1. row ***************************
Db: test123
Name: event_t1
Definer: root@localhost
Time zone: SYSTEM
Type: RECURRING
Execute at: NULL
Interval value: 10
Interval field: DAY
Starts: -11-12 15:47:31
Ends: NULL
Status: ENABLED
Originator: 0
character_set_client: utf8
collation_connection: utf8_general_ci
Database Collation: latin1_swedish_ci
1 row in set (0.00 sec)
ERROR:
No query specified
mysql>
14.查看事件调度器的内容
mysql> show create event event_t1 \G;
*************************** 1. row ***************************
Event: event_t1
sql_mode: STRICT_TRANS_TABLES,NO_ENGINE_SUBSTITUTION
time_zone: SYSTEM
Create Event: CREATE DEFINER=`root`@`localhost` EVENT `event_t1` ON SCHEDULE EVERY 10 DAY STARTS '-11-12 15:47:31' ON COMPLETION NOT PRESERVE ENABLE DO truncate table t
character_set_client: utf8
collation_connection: utf8_general_ci
Database Collation: latin1_swedish_ci
1 row in set (0.00 sec)
ERROR:
No query specified
mysql>
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