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连续逾期

IF EXISTS(SELECT FROM SYS.TABLES WHERE NAME='SPD') DROP TABLE SPD;
WITH CTE1 AS
(
SELECT
IIF(PD_DueDT>=ISNULL(PD_DebitSuccDT,'9999-12-31'),0,1) AS FLAG/
逾期FLAG/,
ROW_NUMBER() OVER(PARTITION BY PD_EFH_SN ORDER BY PD_Termth) AS ID/
期次序号/,
MAX(PD_Termth) OVER (PARTITION BY PD_EFH_SN)AS CurrID/
当前最大期次序号*/,

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  • FROM PD WHERE PD_DueDT<=GETDATE() AND PD_Termth>0
    ),
    CTE2 AS
    (
    SELECT
    SUM(FLAG) OVER(PARTITION BY PD_EFH_SN ORDER BY PD_Termth ROWS UNBOUNDED PRECEDING) AS AccuFlag/累计逾期期次/,

  • FROM CTE1
    ),
    CTE3 AS
    (
    SELECT
    ID-AccuFlag AS FlagGrp/逾期分组/,

  • FROM CTE2
    ),
    CTE4 AS
    (
    SELECT
    SUM(FLAG) OVER (PARTITION BY PD_EFH_SN,FlagGrp) AS CountFlag/分组计数/,

  • FROM CTE3 WHERE FLAG=1
    ),
    CTE5 AS
    (
    SELECT
    MAX(CountFlag) OVER (PARTITION BY PD_EFH_SN) AS MaxContFlag/最大连续/,
    MAX(AccuFlag) OVER (PARTITION BY PD_EFH_SN) AS TotFlag/历史累计/,
    IIF(ID=PD_TotTerm,CountFlag,0) AS CurrContFlag/当前累计/,
    ROW_NUMBER() OVER (PARTITION BY PD_EFH_SN ORDER BY PD_Termth DESC) AS CurrTermth,

  • FROM CTE4
    )
    SELECT DISTINCT PD_EFH_SN,MaxContFlag,TotFlag,CurrContFlag,'XFY' AS DataSource INTO SPD FROM CTE5 WHERE CurrTermth=1


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