1
因此，我有一個查詢可以選擇具有長連接和聚合的數據度量。一些結果會返回似乎是重複的，除了一列以外，這是一個交易號碼。原因是單獨的交易是針對完全相同的記錄進行的。我們不能只爲了記錄保存目的而刪除交易。我有下面的查詢：在select語句中複製記錄，複合連接中的一列除外
SELECT distinct (SELECT DATEADD(DAY,-1,DATEADD(MONTH,DATEDIFF(MONTH,0,MAX(GreatestDate)) + 1, 0))
FROM
(VALUES (max(th.TransactionEffectiveDt)),(max(bp.EffectiveDt)),(max(th.TransactionDt))) AS Value(GreatestDate)) AS BookDate
,th.Transactioncd TransactionType
,bp.PolicyNumber PolicyNumber
,cast(bp.EffectiveDt AS DATE) EffectiveDate
,max(cast(th.TransactionEffectiveDt AS DATE)) TransactionEffectiveDate
,NULL WINS_TransactionNumber
,th.TransactionNumber TransactionNumber
,cast(bp.ExpirationDt AS DATE) ExpirationDate
,replace(UPPER(ni.IndexName), ',', '') InsuredName
,replace(isnull(UPPER(ad.Addr1), '') + ' ' + isnull(UPPER(ad.Addr2), '') + ' ' + isnull(UPPER(ad.Addr3), '') + ' ' + isnull(UPPER(ad.Addr4), ''), ',', '') InsuredStreetAddress
,UPPER(ad.City) InsuredCity
,UPPER(ad.StateProvCd) InsuredState
,ad.PostalCode InsuredZipCode
,i.EntityTypeCd InsuredType
,isnull(tr.ReasonCd, '') ReasonCode
,cast(datediff(mm, th.transactioneffectivedt, bp.expirationdt)/cast(datediff(mm, bp.effectivedt, bp.expirationdt) AS DECIMAL(15, 4)) AS DECIMAL(15, 4)) ProrateFactor
,isnull(cast(th.writtenpremiumamt as int), '0') APRP
,isnull(cast(th.inforcepremiumamt as int), '0') AnnualPremium
,CONVERT(INT,REPLACE(REPLACE(REPLACE(ln.DWELLLimit, '.00', ''), '$', ''),',','')) AggreLimit
,'0' YrConstruction
,ln.PROPDed +'%' [% loss ded EQ]
,CASE
WHEN BD.bldgnumber > 0
THEN '0' END as Ind
,'0' CovA
,'0' CovB
,'0' CovC
,'0' CovD
,'0' CovE
,'0' CovF
FROM java.basicpolicy bp
INNER JOIN java.nameinfo ni ON ni.SystemId = bp.SystemId
AND ni.CMMContainer = bp.CMMContainer
INNER JOIN java.line ln ON ln.CMMContainer = bp.CMMContainer
AND bp.SystemId = ln.SystemId
INNER JOIN java.building bd ON bd.CMMContainer = bp.CMMContainer
AND bd.SystemId = bp.SystemId
INNER JOIN java.addr ad ON ad.CMMContainer = ni.CMMContainer
AND bp.SystemId = ad.SystemId
AND ad.AddrTypeCd = 'InsuredMailingAddr'
INNER JOIN java.transactionhistory th ON th.CMMContainer = bp.CMMContainer
AND th.SystemId = bp.SystemId
LEFT JOIN java.transactionreason tr ON tr.CMMContainer = bp.CMMContainer
AND TR.SystemId = bp.SystemId
AND TR.ParentId = th.ID
INNER JOIN java.insured i ON i.CMMContainer = bp.CMMContainer
AND i.SystemId = bp.SystemId
WHERE bp.CMMContainer = 'policy'
AND ni.NameTypeCd = 'INSUREDNAME'
AND (
th.TransactionCd IN (
'new business'
,'endorsement'
,'cancellation'
,'rewrite-new'
)
OR (
th.WrittenPremiumAmt IS NOT NULL
AND th.WrittenPremiumAmt <> 0
AND th.TransactionCd IN ('reinstatement')
)
)
AND bp.CarrierCd = 'ENIC'
AND bp.PolicyNumber = '84EQ000006'
GROUP BY
th.Transactioncd
,bp.PolicyNumber
,cast(bp.EffectiveDt AS DATE)
,cast(th.TransactionEffectiveDt AS DATE)
,th.TransactionNumber
,cast(bp.ExpirationDt AS DATE)
,UPPER(ni.IndexName)
,(isnull(UPPER(ad.Addr1), '') + ' ' + isnull(UPPER(ad.Addr2), '') + ' ' + isnull(UPPER(ad.Addr3), '') + ' ' + isnull(UPPER(ad.Addr4), ''))
,UPPER(ad.City)
,UPPER(ad.StateProvCd)
,ad.PostalCode
,i.EntityTypeCd
,isnull(tr.ReasonCd, '')
,cast(datediff(mm, th.transactioneffectivedt, bp.expirationdt)/cast(datediff(mm, bp.effectivedt, bp.expirationdt) AS DECIMAL(15, 4)) AS DECIMAL(15, 4))
,isnull(cast(th.writtenpremiumamt as int), '0')
,isnull(cast(th.inforcepremiumamt as int), '0')
,CONVERT(INT,REPLACE(REPLACE(REPLACE(ln.DWELLLimit, '.00', ''), '$', ''),',',''))
,ln.PROPDed +'%'
,CASE
WHEN BD.bldgnumber > 0
THEN '0' END
ORDER BY PolicyNumber
,transactionnumber
,Ind
,BOOKDATE
結果集是這樣的：
交易公告編號列有交易4和5？其他一切都是一樣的，但交易號碼。我不能只刪除一條記錄。所以對於這個實例，因爲有重複的記錄，客戶端只想看到其中的一個。我嘗試使用row_number（）和按功能分組，但我認爲由於許多聯接，它將我扔掉。我需要一個select語句，只顯示其中的一個，因爲這只是一個非常大的存儲過程的一部分。我已經在使用臨時表作其他事情了，所以我不認爲我可以使用它，原因很多。
試試這個ROW_NUMBER，只是幾個子查詢 – LONG