mysql 创建存储过程调用一直出现错误1054
CREATE DEFINER = `root`@`localhost` PROCEDURE `bools`(in ming varchar(20) , in ada varchar(20))
BEGIN
DECLARE u VARCHAR(20);
SELECT book.bkISBN INTO @u FROM book WHERE book.bkName=ming;
UPDATE book SET bkName=ada WHERE professbook.pbkISBN=@u;
END;
运行时一直提示错误1054
unknown column 输入的那一列(即变量ming )