无法在Node.js中运行MySQL查询

Question

我已经在MySQL中编写了一个查询，并在MySQL Workbench中正常工作，但是当我使用Node.js在Lambda Function中运行该查询时，会出错

ER_PARSE_ERROR: 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 'select @userId;\n              insert into Favourite_Contacts (ContactId, UserId)' at line 3",

这是查询

SELECT usertable.userid 
INTO   @userId 
FROM   usertable 
WHERE  usertable.username = ?; 

SELECT @userId; 

INSERT INTO favourite_contacts 
            (contactid, 
             userid) 
VALUES      (?, 
             @userId) 

可能是个问题吗？？