DROP EVENT [IF EXISTS] event_name

此语句删除名为 event_name 的事件。该事件会立即停止激活，并从服务器中完全删除。This statement drops the event named event_name. The event immediately ceases being active, and is deleted completely from the server.

如果事件不存在，会出现错误 ERROR 1517 (HY000): Unknown event 'event_name'。你可以使用 IF EXISTS 来覆盖此行为，使语句对不存在的事件生成警告而不是错误。If the event does not exist, the error ERROR 1517 (HY000): Unknown event 'event_name' results. You can override this and cause the statement to generate a warning for nonexistent events instead using IF EXISTS.

此语句要求被删除事件所属模式具有 EVENT 权限。This statement requires the EVENT privilege for the schema to which the event to be dropped belongs.