SHOW CREATE EVENT event_name
此语句显示CREATE
EVENT
重新创建给定事件所需的语句。它需要EVENT
显示事件的数据库的权限。例如(使用在第 13.7.7.18 节“SHOW EVENTS 语句”e_daily
中定义然后更改的相同事件):
mysql> SHOW CREATE EVENT myschema.e_daily\G
*************************** 1. row ***************************
Event: e_daily
sql_mode: ONLY_FULL_GROUP_BY,STRICT_TRANS_TABLES,
NO_ZERO_IN_DATE,NO_ZERO_DATE,
ERROR_FOR_DIVISION_BY_ZERO,
NO_ENGINE_SUBSTITUTION
time_zone: SYSTEM
Create Event: CREATE DEFINER=`jon`@`ghidora` EVENT `e_daily`
ON SCHEDULE EVERY 1 DAY
STARTS CURRENT_TIMESTAMP + INTERVAL 6 HOUR
ON COMPLETION NOT PRESERVE
ENABLE
COMMENT 'Saves total number of sessions then
clears the table each day'
DO BEGIN
INSERT INTO site_activity.totals (time, total)
SELECT CURRENT_TIMESTAMP, COUNT(*)
FROM site_activity.sessions;
DELETE FROM site_activity.sessions;
END
character_set_client: utf8mb4
collation_connection: utf8mb4_0900_ai_ci
Database Collation: utf8mb4_0900_ai_ci
character_set_client
character_set_client
是创建事件时系统变量
的会话值。是创建事件时系统变量collation_connection
的会话值。是与事件关联的数据库的排序规则。
collation_connection
Database
Collation
输出反映了事件 ( ENABLE
) 的当前状态,而不是创建时的状态。