update query in MYSQL stored procedure - mysql

Question

When I execute below update query in mysql workbench It will update only 2 rows.
UPDATE usertoken
SET StatusName='Completed',Id=null
WHERE (UserId=45 and BuddyId=46) OR (UserId=46 and BuddyId=45);
but the same query inside the Stored Procedure updates the entire table.
Even I hard coded the user id's inside the Stored procedure nothing changed.
Any Idea's?
UPDATE:
CREATE DEFINER=`root`#`%` PROCEDURE `SubmitResult`(IN userId int,IN buddyID int,IN startTime DATETIME,IN endtime DATETIME,IN questions varchar(255),IN answers varchar(255))
BEGIN
SET #userId = userId;
SET #questions = questions;
SET #answers = answers;
SET #buddyID = buddyID;
SELECT #QuizId := QuizId from usertoken where (UserId=#userId and BuddyId=#buddyID) OR (UserId=#buddyID and BuddyId=#userId) LIMIT 1;
IF #QuizId IS NULL THEN
INSERT INTO QUIZ (QuizStartTime, QuizEndTime, QuizTypeId)
SELECT startTime,endtime,1;
SELECT #newQId := MAX(QuizId) from QUIZ LIMIT 1;
SELECT #userId,#buddyID,#newQId;
/* UPDATE usertoken SET QuizStatusName='Completed',QuizId=#newQId where (UserId=#userId and BuddyId=#buddyID) OR (UserId=#buddyID and BuddyId=#userId); */
UPDATE usertoken SET QuizStatusName='Completed',QuizId=#newQId where UserId=45;
UPDATE usertoken SET QuizStatusName='Completed',QuizId=#newQId where UserId=46;
// Some Statements
END IF;
SET #userId = NULL;
SET #questions = NULL;
SET #answers = NULL;
SET #buddyID = NULL;
SET #startTime = NULL;
SET #endtime = NULL;
SET #QID = NULL;
SET #AID = NULL;
SET #n = NULL;
SET #newQMId = NULL;
SET #newQId = NULL;
SET #QuizId = NULL;
END

Answer 1

My update query works well after prefixing the where condition with table alias name.. Not sure why it got failed but i assume that Stored procedure IN parameter has the same userId attribute and it could be cause..
After prefixing my update query,
UPDATE usertoken t
SET t.StatusName='Completed',t.Id=null
WHERE (t.UserId=45 and t.BuddyId=46) OR (t.UserId=46 and t.BuddyId=45);