Stored procedure and MySQL Variable

Question

Hi i am trying to create a procedure that gets the ansID as a param and updates the "score" field in both the User table and Answer Table.

DELIMITER $$
CREATE PROCEDURE UpVoteAnswer(IN _ansID INT)
BEGIN
SET @_userID = SELECT user_id from Answers where id = _ansID;
UPDATE Answers SET score = score + 1 where id = _ansID;
UPDATE Users SET score = score + 1 where id = @_userID;
END
$$
DELIMITER ;



Error:
#1064 - You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'SELECT user_id from Answers where id = _ansID;
UPDATE Answers SET score = score' at line 3

Answer 1

Use either

SET @_userID = (SELECT user_id from Answers where id = _ansID);

or

SELECT user_id from Answers where id = _ansID INTO @_userID;