Implementing Queuing Mechanism

DECLARE @nextMergeID INT ;
DECLARE @customerID INT;
DECLARE @mergeDate DATETIME;
DECLARE @reset BIT;
 
BEGIN TRAN 
      --Get Next MergeID 
      SELECT TOP 1 
@nextMergeID = merge_id
      FROM dbo.merge_standard_queue WITH(UPDLOCK,READPAST)
      WHERE [picked] = 
0
      ORDER BY merge_date 
ASC;
      
      --if found, flag it to prevent being picked up again 

      IF(@nextMergeID 
IS NOT NULL)
      BEGIN
            UPDATE dbo.merge_standard_queue WITH(ROWLOCK) 
            SET [picked] = 
1
            WHERE merge_id = 
@nextMergeID;
      END
      
COMMIT TRAN
 
IF(@nextMergeID IS NOT NULL)
BEGIN 
---Do Processing Here 
    
    
END