Question

我需要一个查询，它将根据表中的一组列比较返回SQL Server表中的重复行。我已经接近了这个：

DECLARE @startDate AS DATETIME = '9/1/2017';
DECLARE @endDate AS DATETIME = '9/2/2017';

WITH DupRecordSet AS
(
    SELECT 
        *, 
        ROW_NUMBER() OVER (PARTITION BY CCACaseId, Decision, DecisionDate, Extension, [Filename], Medicaid, MMISBillingNumber, NarrativeOfComments, NPIProviderId, OACNarrative, OHAdministrativeCode, PostSubmissionStateDate, PreSubmissionStateDate, ProviderID, ProviderRequestNarrative, RequestDate, ServiceTypeAuthRequest, Source, StateHearingDate, TypeOfRequest, UMTDPostSubmissionStateId, UMTDPreSubmissionRejectReasonId, UMTDPreSubmissionStateId ORDER BY (SELECT 0)) AS DuplicateRowNumber
    FROM 
        CTSMember01.dbo.UMTDRecord
    WHERE 
        DecisionDate BETWEEN @startDate AND @endDate
), DisplayRecordSet AS 
(
    SELECT 
        *
    FROM 
        DupRecordSet
    WHERE 
        DupRecordSet.DuplicateRowNumber > 1
)
SELECT *
FROM DisplayRecordSet;

但问题是这只包括“额外”行。换句话说，在找到3个重复行的情况下，此查询将返回第二行和第三行，但不返回第一行。我需要所有三行。

Answer 1

您可以使用ROW_NUMBER代替DECLARE @startDate AS DATETIME = '9/1/2017'; DECLARE @endDate AS DATETIME = '9/2/2017'; WITH DupRecordSet AS ( SELECT *, COUNT(*) OVER (PARTITION BY CCACaseId, Decision, DecisionDate, Extension, [Filename], Medicaid, MMISBillingNumber, NarrativeOfComments, NPIProviderId, OACNarrative, OHAdministrativeCode, PostSubmissionStateDate, PreSubmissionStateDate, ProviderID, ProviderRequestNarrative, RequestDate, ServiceTypeAuthRequest, Source, StateHearingDate, TypeOfRequest, UMTDPostSubmissionStateId, UMTDPreSubmissionRejectReasonId, UMTDPreSubmissionStateId) AS DuplicateRowNumber FROM CTSMember01.dbo.UMTDRecord WHERE DecisionDate BETWEEN @startDate AND @endDate ), DisplayRecordSet AS ( SELECT * FROM DupRecordSet WHERE DupRecordSet.DuplicateRowNumber > 1 ) SELECT * FROM DisplayRecordSet;：

{{1}}

在SQL Server中查找重复行并包含所有行

1 个答案: