SQL search query

SELECT DISTINCT qci.id 
                AS 
                qcuid, 
                t.uid 
                AS taskuid, 
                t.polinekey, 
                cf.factoryuid, 
                Cast(Cast(ponumber AS INT) AS VARCHAR) 
                AS ponumber, 
                Upper(Isnull(custid, '')) 
                AS custid, 
                Upper(COALESCE(NULLIF(custname, ''), shiptoname)) 
                AS custname, 
                Isnull(t.selectedtask, 1) 
                AS selectedtask, 
                CASE 
                  WHEN t.qctestsampleuid > 0 THEN (SELECT 
                  Upper(COALESCE(masitemno, uniqueid)) 
                                                   FROM   ideas 
                                                   WHERE 
                  ideauid = (SELECT ideauid 
                             FROM   task 
                             WHERE  uid = st.parentuid)) 
                  ELSE Upper(itemid) 
                END 
                AS itemid, 
                CASE 
                  WHEN t.qctestsampleuid > 0 THEN (SELECT Upper(itemdesc) 
                                                   FROM   ideas 
                                                   WHERE 
                  ideauid = (SELECT ideauid 
                             FROM   task 
                             WHERE  uid = st.parentuid)) 
                  ELSE Upper(vpo.description) 
                END 
                AS itemdescription, 
                Cast(COALESCE(rh.taskuid, 0) AS BIT) 
                AS Uploaded, 
                dbo.Kkgetallowsubmitbypass(t.uid) 
                AS enableBypass, 
                Cast(COALESCE(t.resultsid, 0) AS BIT) 
                AS uploadcompeted, 
                t.resultsid, 
                CASE 
                  WHEN t.qctestsampleuid > 0 THEN Upper( 
                  COALESCE (st.designer, '')) 
                  ELSE Upper(factory) 
                END 
                AS factory, 
                companyid, 
                NULLIF (promisedate, '01/01/1900') 
                AS POShipdate, 
                vpo.polinekey, 
                vpo.pokey, 
                purchamt, 
                qtyleft, 
                sumqtytoload, 
                sumqtyloaded, 
                qtyord, 
                qtyopentorcv, 
                companyid, 
                qci.id 
                AS qcInspectionUID, 
                qci.customeritem, 
                qci.customerpo, 
                qci.custbatchdatecode, 
                CASE Rtrim(Ltrim(qci.batchcode)) 
                  WHEN '' THEN Cast (Cast(vpo.ponumber AS INT) AS VARCHAR) 
                               + '/' + vpo.itemid + '/' 
                               + Cast (Datepart(wk, vpo.promisedate) AS VARCHAR)
                   ELSE Rtrim(Ltrim(qci.batchcode)) 
                END 
                AS batchcode, 
                qci.label_needsilversticker, 
                qci.label_needbranding, 
                qci.label_needcarbsticker, 
                qci.label_needfabriclabel, 
                qci.label_needenginewarning, 
                t.designer 
                AS Inspectorname, 
                t.comments 
                AS inspectorinstructions, 
                t.designeruid 
                AS inspectorUID, 
                t.daterequested, 
                NULLIF (t.datetobecomplete, '01/01/1900') 
                AS inspectiondate, 
dbo.Kktaskdisablewithoutsignoff(t.polinekey, t.parentuid, t.datetobecomplete) AS
 TaskDisableWithoutSignOff, 
qci.label_needflyer, 
NULLIF (t.completeddate, '01/01/1900')                                        AS
                 completeddate, 
NULLIF (t.downloaddate, '01/01/1900')                                         AS
                 DownloadDate, 
t.successfuldownload, 
t.isxmlreleased, 
Isnull(uc.elevateflag, 0)                                                     AS
                 elevateflag, 
Isnull(uc.commentuid, 0)                                                      AS
                 commentuid, 
Isnull((SELECT 1 
        FROM   task 
        WHERE  uid = ANY (SELECT TOP 1 uid 
                          FROM   task (nolock) t2 
                                 INNER JOIN historytaskstatus AS hts (nolock) 
                                         ON hts.taskuid = t2.uid 
                                 INNER JOIN designertaskstatus dts (nolock) 
                                         ON dts.designerstatusuid = 
                                            hts.taskstatusuid 
                          WHERE  t2.uid = t.uid 
                                 AND closetask <> 0 
                                 AND wascloned = 0)), 0)                      AS
                 cloneneeded, 
Cast(CASE 
       WHEN qci.xpsreport IS NULL THEN 0 
       ELSE 1 
     END AS BIT)                                                              AS
                 uploadcompeted 
FROM   task (nolock) t 
       INNER JOIN qcinspection (nolock) qci 
               ON qci.taskuid = t.uid 
       LEFT JOIN qcfinalinspection (nolock) qfi 
              ON qfi.qcinspectionid = qci.id 
       LEFT JOIN vpoalldetailswithcust (nolock) vpo 
              ON t.polinekey = vpo.polinekey 
       LEFT JOIN sampledetail (nolock)sd 
              ON sd.sampleuid = t.qctestsampleuid 
       LEFT JOIN task (nolock)st 
              ON st.uid = sd.taskuid 
       LEFT JOIN pofactory (nolock) pof 
              ON vpo.polinekey = pof.polinekey 
       LEFT JOIN factoryinfo (nolock) cf 
              ON pof.factoryuid = cf.factoryuid 
       LEFT JOIN vfactorymgr (nolock) fm 
              ON cf.factoryuid = fm.factoryuid 
       LEFT JOIN [resultshistory] rh 
              ON rh.taskuid = t.uid 
                 AND rh.notes = 'Inspection uploaded' 
       LEFT JOIN usercomments (nolock) AS uc 
              ON uc.commentuid = (SELECT TOP 1 commentuid 
                                  FROM   usercomments 
                                  WHERE  usercomments.typeuid = t.uid 
                                         AND type = 35 
                                         AND Isnull(usercomments.commentuid, 0) 
                                             <> 0 
                                         AND ( private = 0 
                                                OR ( private <> 0 
                                                     AND userid = 406 ) ) 
                                         AND Isnull(activecmt, 0) > 0 
                                  ORDER  BY elevateflag DESC) 
WHERE  Isnull(t.uid, 0) > 0 
       AND t.tasktype = 35 
       AND ( ( Isdate(t.completeddate) = 1 
               AND ( Datediff(dd, '01/01/1900', t.datetobecomplete) > 0 ) ) 
              OR ( ( Isdate(t.completeddate) = 0 
                      OR ( Datediff(dd, '01/01/1900', t.datetobecomplete) = 0 ) 
                   ) 
                   AND ( vpo.polstatus = 2 
                          OR vpo.postatus IN ( 2, 3, 4 ) 
                          OR t.qctestsampleuid > 0 ) ) )