mysqlprepare存储过程_存储过程中的MySQLPREPARE语句

我有这个sql文件&＃xff1a;

USE mydb;

DROP PROCEDURE IF EXISTS execSql;

DELIMITER //

CREATE PROCEDURE execSql (

IN sqlq VARCHAR(5000)

) COMMENT &＃39;Executes the statement&＃39;

BEGIN

PREPARE stmt FROM sqlq;

EXECUTE stmt;

DEALLOCATE PREPARE stmt;

END //

DELIMITER ;

当我尝试运行它时

#cat file.sql | mysql -p

我明白了

ERROR 1064 (42000) at line 6: 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 &＃39;sqlq;

EXECUTE stmt;

DEALLOCATE PREPARE stmt;

END&＃39; at line 5

我究竟做错了什么&＃xff1f;