MySQL SP:错误1241（21000）

您好，我正在尝试使用此sp进行插入，插入状态为：

call insertuser (1, '077788899965', 'Digest 1.0', ':=', 'asjdfhiuoadshgiadufg');

SP代码：

DELIMITER$$

CREATE PROCEDURE insertuser (IN IdParam INT, IN UserNameParam varchar(64), IN AttributeParam varchar(64), IN OpParam  char(2), IN ValueParam varchar(253)) 
BEGIN 

    // Delete user if they already exist

    DELETE FROM radcheck 
    WHERE username = UserNameParam; 

    // Insert

    INSERT INTO  radcheck (id, username, atrribute, op, value) 
    SELECT (IdParam, UserNameParam, AttributeParam, OpParam, ValueParam); 

END$$

但我的错误是：

错误1241（21000）：操作数应包含1列

你知道怎么解决这个问题吗

DELIMITER $$

CREATE PROCEDURE insertuser (IN IdParam INT, IN UserNameParam varchar(64), 
                             IN AttributeParam varchar(64), IN OpParam  char(2), 
                             IN ValueParam varchar(253)) 
BEGIN 
    DELETE FROM radcheck 
    WHERE username = UserNameParam; 

    INSERT INTO  radcheck (id, username, atrribute, op, `value`) 
    SELECT IdParam, UserNameParam, AttributeParam, OpParam, ValueParam;
END
$$

有两个问题：

• 分隔符后缺少空格

• /

  不是MySQL中的注释开头。使用

  /**/

如果您使用像MySQL Workbench这样的SQL IDE，这些错误将突出显示，并且更容易修复