查詢定時任務(wù)是否開啟

show variables like 'event_scheduler';

Variable_name

Value

event_scheduler

OFF

OFF 為關(guān)閉，ON 為開啟

開啟定時任務(wù)

set global event_scheduler = on;

創(chuàng)建定時任務(wù)

CREATE [DEFINER = { user | CURRENT_USER }] EVENT [IF NOT EXISTS] event_name

ON SCHEDULE schedule

[ON COMPLETION [NOT] PRESERVE]

[ENABLE | DISABLE | DISABLE ON SLAVE]

[COMMENT 'comment']

DO event_body;

schedule:

AT timestamp [+ INTERVAL interval] ...

| EVERY interval

[STARTS timestamp [+ INTERVAL interval] ...]

[ENDS timestamp [+ INTERVAL interval] ...]

interval:

quantity {YEAR | QUARTER | MONTH | DAY | HOUR | MINUTE |

WEEK | SECOND | YEAR_MONTH | DAY_HOUR |

DAY_MINUTE |DAY_SECOND | HOUR_MINUTE |

HOUR_SECOND | MINUTE_SECOND}

DEFINER: 執(zhí)行事件時檢查用戶是否有權(quán)限

ON SCHEDULE schedule： 執(zhí)行的時間或間隔

ON COMPLETION [NOT] PRESERVE：執(zhí)行一次或永久執(zhí)行

ENABLE | DISABLE | DISABLE ON SLAVE：事件定義后是否啟用

COMMENT 'comment'：事件的注釋

每1秒：

on schedule every 3 second

10分鐘后：

ON SCHEDULE AT CURRENT_TIMESTAMP + INTERVAL 10 MINUTE

指定時刻：

ON SCHEDULE AT TIMESTAMP '2020-01-11 01:01:00'

7天后，每1秒執(zhí)行一次，1個月后停止：

ON SCHEDULE EVERY 1 SECOND

STARTS CURRENT_TIMESTAMP + INTERVAL 7day

ENDS CURRENT_TIMESTAMP + INTERVAL 1 month

關(guān)閉事件：

alter event event_name disable;

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