私のクエリは常に重複した結果を生成します。100 万行を超えるデータベースでこのクエリをトラブルシューティングするにはどうすればよいですか。
Select segstart
,segment
,callid
,Interval
,dialed_num
,FiscalMonthYear
,SegStart_Date
,row_date
,Name
,Xferto
,TransferType
,Agent
,Sup
,Manager
,'MyCenter' = Case Center
When 'Livermore Call Center' Then 'LCC'
When 'Natomas Call Center' Then 'NCC'
When 'Concord Call Center' Then 'CCC'
When 'Virtual Call Center' Then 'VCC'
When 'Morgan Hill Call Center' Then 'MHCC'
Else Center
End
,Xferfrom
,talktime
,ANDREWSTABLE.transferred
,ANDREWSTABLE.disposition
,dispsplit
,callid
,hsplit.starttime
,CASE
WHEN hsplit.callsoffered > 0
THEN (CAST(hsplit.acceptable as DECIMAL)/hsplit.callsoffered)*100
ELSE '0'
END AS 'Service Level'
,hsplit.callsoffered
,hsplit.acceptable
FROM
(
Select segstart,
100*DATEPART(HOUR, segstart) + 30*(DATEPART(MINUTE, segstart)/30) as Interval,
FiscalMonthYear,
SegStart_Date,
dialed_num,
callid,
Name,
t.Queue AS 'Xferto',
TransferType,
RepLName+', '+RepFName AS Agent,
SupLName+', '+SupFName AS Sup,
MgrLName+', '+MgrFName AS Manager,
q.Center,
q.Queue AS 'Xferfrom',
e.anslogin,
e.origlogin,
t.Extension,
transferred,
disposition,
talktime,
dispsplit,
segment
From CMS_ECH.dbo.CaliforniaECH e
INNER JOIN Cal_RemReporting.dbo.TransferVDNs t on e.dialed_num = t.Extension
INNER JOIN InfoQuest.dbo.IQ_Employee_Profiles_v3_AvayaId q on e.origlogin = q.AvayaID
INNER JOIN Cal_RemReporting.dbo.udFiscalMonthTable f on e.SegStart_Date = f.Tdate
Where SegStart_Date between getdate()-90 and getdate()-1
And q.Center not in ('Collections Center',
'Cable Store',
'Business Services Center',
'Escalations')
And SegStart_Date between RepToSup_StartDate and RepToSup_EndDate
And SegStart_Date between SupToMgr_StartDate and SupToMgr_EndDate
And SegStart_Date between Avaya_StartDate and Avaya_EndDate
And SegStart_Date between RepQueue_StartDate and RepQueue_EndDate
AND (e.transferred like '1'
OR e.disposition like '4') order by segstart
) AS ANDREWSTABLE
--Left Join CMS_ECH.dbo.hsplit hsplit on hsplit.starttime = ANDREWSTABLE.Interval and hsplit.row_date = ANDREWSTABLE.SegStart_Date and ANDREWSTABLE.dispsplit = hsplit.split