MySQL - CREATE DEFINER 语法错误

Question

我正在尝试更新 MySQL 数据库中的存储函数。该更新将发布到多个设备，因此我通过 update.sql 文件进行更新。

这里是函数

DROP FUNCTION `STAFF_MPT`;
CREATE DEFINER=`jelena`@`%` FUNCTION `STAFF_MPT`(`par_stocktake_staff_id`     INT) RETURNS DECIMAL(20,0) NOT DETERMINISTIC CONTAINS SQL SQL SECURITY DEFINER BEGIN

DECLARE proc_total INT;
DECLARE proc_time INT;

SET proc_total = (SELECT SUM(quantity) FROM stocktake_scans WHERE stocktake_staff_id = par_stocktake_staff_id);

SET proc_time = (SELECT TIMESTAMPDIFF( SECOND , MIN( scan_date ) , MAX( scan_date ) ) AS area_time
    FROM stocktake_scans
    WHERE stocktake_staff_id = par_stocktake_staff_id
    );

RETURN (proc_total/proc_time)*3600;

END

刚刚测试组向我反映，使用该功能的报告没有正确生成。我尝试在 PMA SQL 查询窗口中运行代码并得到以下结果：

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 3 

谁能告诉我我错过了什么？据此，第 3 行是空的，那么它怎么可能有语法错误呢？

Answer 1

截至MySQL docs：

如果使用mysql客户端程序定义一个包含分号字符的存储程序，就会出现问题。默认情况下，mysql本身将分号识别为语句分隔符，因此必须临时重新定义分隔符，以使mysql将整个存储的程序定义传递给服务器。

要重新定义 mysql 分隔符，请使用delimiter 命令。

@juergen_d 在评论中暗示：您必须使用分隔符定义您的过程：

DROP FUNCTION `STAFF_MPT`;

delimiter ||

CREATE DEFINER=`jelena`@`%` FUNCTION `STAFF_MPT`(`par_stocktake_staff_id`     INT) RETURNS DECIMAL(20,0) NOT DETERMINISTIC CONTAINS SQL SQL SECURITY DEFINER BEGIN

DECLARE proc_total INT;
DECLARE proc_time INT;

SET proc_total = (SELECT SUM(quantity) FROM stocktake_scans WHERE stocktake_staff_id = par_stocktake_staff_id);

SET proc_time = (SELECT TIMESTAMPDIFF( SECOND , MIN( scan_date ) , MAX( scan_date ) ) AS area_time
    FROM stocktake_scans
    WHERE stocktake_staff_id = par_stocktake_staff_id
    );

RETURN (proc_total/proc_time)*3600;

END

||
delimiter ;