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

分享名称：连续逾期
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