Question

I have this query which takes 2 minutes to execute even the time period is not that long:

SELECT MTI.DeptID,
       ShortEmployees.EmpID,
       ShortEmployees.EmpName1 AS EmpName,
       Sum(CASE
             WHEN (BSR.BSTID = 3
                   AND bli.state IN (12, 13, 14)) THEN -1 * ((BLD.Qty / dbo.Getunitval(BLD.UnitID, BLD.MTID)) * BLD.Price - ((BLD.Qty / dbo.Getunitval(BLD.UnitID, BLD.MTID)) * BLD.Price * BLD.discount * 0.01))
             ELSE ((BLD.Qty / dbo.Getunitval(BLD.UnitID, BLD.MTID)) * BLD.Price - ((BLD.Qty / dbo.Getunitval(BLD.UnitID, BLD.MTID)) * BLD.Price * BLD.discount * 0.01))
           END) AS Total
FROM   BLD
       INNER JOIN BLI
         ON BLD.BLNo = BLI.BLNo
       INNER JOIN BSR
         ON BLI.BLID = BSR.BLID
       INNER JOIN ShortEmployees
         ON BLI.EmpID = ShortEmployees.EmpID
       INNER JOIN MTI
         ON BLD.MTID = MTI.MTID
WHERE  (MTI.DeptID = 'B')
       AND (BLI.BLDate > Cast('2013-01-01 00:00:00' AS DATETIME))
       AND (BLI.BLDate < Cast('2013-01-14 23:59:59' AS DATETIME))
       AND ((BSR.BSTID = 2
             AND bli.state IN (2, 6, 8, 9,
                               10, 12, 18))
             OR (BSR.BSTID = 3
                 AND bli.state IN (12, 13, 14)))
GROUP  BY ShortEmployees.EmpName1,
          ShortEmployees.EmpID,
          MTI.DeptID
ORDER  BY Total DESC

How I can optimize it?

MTI: Items information table.

BLI: Bills table.

BLD: Bill details table.

ShortEmployees: Salesmen table.

Answer 1

Finally, I ended up converting that query into whole stored procedure and the difference is huge! now it takes 2 seconds only :), thanks everybody specially the hater spanky 😉