スプリットSTARTDATEに基づいてレコードと

Question

入力セットをenddateこの、

CMP BND_CD STARTDATE ENDDATE 
01 UF  03/15/2010 07/01/2010 
01 TRL 03/15/2010 12/15/2014 

ダミーデータ

CREATE TABLE DATA (CMP, BND_CD, STARTDATE, ENDDATE) AS 
    SELECT '01','UF', DATE '2010-03-15', DATE '2010-07-01' FROM DUAL UNION ALL 
    SELECT '01','TRL', DATE '2010-03-15', DATE '2010-12-15' FROM DUAL; 

私は

、すなわち、TRL/UFレコードを分割3つのレコードとして出力し、必要

CMP BND_CD STARTDATE ENDDATE 
01 UF  03/15/2010 07/01/2010 
01 TRL 03/15/2010 07/01/2010 
01 TRL 07/01/2010 12/15/2014 

日付範囲が重複している場合は、2つのBND_CDの各CMPコードごとに分割を実行する必要があります。Cに基づいてレコードをグループ化する必要がありますMP値の場合、TRLがUFと重複する場合、TRLのリワードを分割するか、UFがTRLをオーバーラップする場合、UFレコードを分割する必要があります。

Answer 1

クエリ：

SELECT u.cmp,   -- UF values preceding the TRL range 
     u.bnd_cd, 
     u.start_date, 
     LEAST(u.end_date, t.start_date) 
FROM data t 
     INNER JOIN 
     data u 
     ON ( t.bnd_cd = 'TRL' 
      AND u.bnd_cd = 'UF' 
      AND t.cmp = u.cmp 
      AND u.start_date < t.start_date) 
UNION ALL 
SELECT u.cmp,   -- UF values within the TRL range 
     u.bnd_cd, 
     GREATEST(u.start_date, t.start_date), 
     LEAST(u.end_date, t.end_date) 
FROM data t 
     INNER JOIN 
     data u 
     ON ( t.bnd_cd = 'TRL' 
      AND u.bnd_cd = 'UF' 
      AND t.cmp = u.cmp 
      AND u.start_date <= t.end_date 
      AND u.end_date >= t.start_date) 
UNION ALL 
SELECT u.cmp,   -- UF values following the TRL range 
     u.bnd_cd, 
     GREATEST(u.start_date, t.end_date), 
     u.end_date 
FROM data t 
     INNER JOIN 
     data u 
     ON ( t.bnd_cd = 'TRL' 
      AND u.bnd_cd = 'UF' 
      AND t.cmp = u.cmp 
      AND u.end_date > t.end_date) 
UNION ALL 
SELECT t.cmp,   -- TRL values preceding the UF range 
     t.bnd_cd, 
     t.start_date, 
     LEAST(t.end_date, u.start_date) 
FROM data t 
     INNER JOIN 
     data u 
     ON ( t.bnd_cd = 'TRL' 
      AND u.bnd_cd = 'UF' 
      AND t.cmp = u.cmp 
      AND t.start_date < u.start_date) 
UNION ALL 
SELECT t.cmp,   -- TRL values within the UF range 
     t.bnd_cd, 
     GREATEST(t.start_date, u.start_date), 
     LEAST(t.end_date, u.end_date) 
FROM data t 
     INNER JOIN 
     data u 
     ON ( t.bnd_cd = 'TRL' 
      AND u.bnd_cd = 'UF' 
      AND t.cmp = u.cmp 
      AND t.start_date <= u.end_date 
      AND t.end_date >= u.start_date) 
UNION ALL 
SELECT t.cmp,   -- TRL values following the UF range 
     t.bnd_cd, 
     GREATEST(t.start_date, u.end_date), 
     t.end_date 
FROM data t 
     INNER JOIN 
     data u 
     ON ( t.bnd_cd = 'TRL' 
      AND u.bnd_cd = 'UF' 
      AND t.cmp = u.cmp 
      AND t.end_date > u.end_date) 

出力：

CMP BND_CD START_DATE END_DATE 
--- ------ ---------- ---------- 
01 UF  2010-03-15 2010-07-01 
01 TRL 2010-03-15 2010-07-01 
01 TRL 2010-07-01 2010-08-01