mysql - 使用事件调度程序自动备份不起作用

Question

以下事件给了我一个没有备份数据的空文件。

DELIMITER $$
CREATE DEFINER=`root`@`localhost` EVENT `Backup` 
ON SCHEDULE EVERY 1 minute 
STARTS '2017-12-11 18:09:00' ON COMPLETION PRESERVE ENABLE 
DO 
BEGIN

SET @sql_text = CONCAT("SELECT * FROM dataproject.newbookings INTO OUTFILE '/C:/Users/Ayushkumar/Desktop/backup/", DATE_FORMAT( NOW(), %Y%m%d'),"backup1.csv'");
PREPARE s1 FROM @sql_text;
EXECUTE s1;
DEALLOCATE PREPARE s1;
END $$ DELIMITER;