日期重疊場景

Question

表A（ID INT，MATCH1炭，MATCH2炭，MATCH3炭，開始日期日期時間，結束日期，狀態炭）

id match1 match2 match3 startdate enddate 
1 AAA  BBB  CCC  2006-01-01 2007-01-01 
2 AAA  BBB  CCC  2006-12-12 2008-01-01 
3 AAA  BBB  CCC  2008-01-01 2012-02-02 

4 DDD  EEE  FFF  2009-01-01 2012-01-01 
5 DDD  EEE  FFF  2013-01-01 2020-01-01 

參考表B（MATCH1炭，MATCH2，MATCH3，開始日期日期時間，結束日期）

match1 match2 match3 startdate enddate 
AAA  BBB CCC  2006-01-01 2015-01-01 
DDD  EEE FFF  2009-01-01 2015-01-01 

好了，所以[統計]是NULL，我在表A與 'FAIL' 來填充STAT時：

1）對於TableB中匹配MATCH1，MATCH2，MATCH3，日期（開始和結束）存在於範圍之外。讓我們看看ID = 5 effectivedates = 2013 - 2020，但在其參考表中，其2009-2015因此ID = 5會得到'失敗'。

2）在一組中，set1是match1，match2，match3相等的記錄，所以ID123是一組，ID4是另一組。所以，在一組中，生效日期（開始和結束）日期重疊。即使第1組（ID1,2,3）存在於參考表中相應記錄的日期範圍內，但ID = 2的有效日期與ID = 1的有效日期重疊，因此ID = 2獲得了「FAIL」

預期的結果：

id match1 match2 match3 startdate enddate  stat 
1 AAA  BBB  CCC  2006-01-01 2007-01-01 NULL 
2 AAA  BBB  CCC  2006-12-12 2008-01-01 FAIL 
3 AAA  BBB  CCC  2008-01-01 2012-02-02 NULL 
4 DDD  EEE  FFF  2009-01-01 2012-01-01 NULL 
5 DDD  EEE  FFF  2013-01-01 2020-01-01 FAIL 

在此先感謝。

Answer 1

UPDATE tableA SET [status] = 'FAIL' 
FROM tableB 
WHERE tableB.match1 = tableA.match1 
AND tableB.match2 = tableA.match2 
AND tableB.match3 = tableA.match3 
AND tableA.startDate >= tableB.startDate 
AND tableA.endDate <= tableB.endDate 

EDIT（我想我可能是過於簡單化） EDIT2 - 改變第二WHERE

SELECT -- Things outside of allowed date range 
id 
FROM TableA 
JOIN TableB ON TableB.match1 = TableA.match1 
    AND TableB.match2 = TableA.match2 
    AND TableB.match3 = TableA.match3 
WHERE TableA.startDate < TableB.startDate 
    OR TableA.endDate > TableB.endDate 
UNION 
SELECT -- Things with overlapping date ranges 
TableA2.id 
FROM TableA  
JOIN TableA AS TableA2 ON TableA2.match1 = TableA.match1 
    AND TableA2.match2 = TableA.match2  
    AND TableA2.match3 = TableA.match3  
WHERE TableA2.startDate BETWEEN TableA.startDate AND TableA.endDate 
    OR TableA2.endDate BETWEEN TableA.startDate AND TableA.endDate 
    OR (TableA2.startDate < TableA.startDate AND TableA2.endDate > TableA.endDate) 

Answer 2

SQL語句

;WITH CandidateIDs AS (
    SELECT idOriginal = YourTable.id, idFailCandidate = ed.id 
    FROM YourTable 
      INNER JOIN YourTable ed ON ed.match1 = YourTable.match1 
           AND ed.match2 = YourTable.match2 
           AND ed.startdate BETWEEN YourTable.startdate AND YourTable.enddate 
           AND ed.id <> YourTable.id 
)        
SELECT * 
FROM YourTable 
     INNER JOIN (
      SELECT idFailCandidate 
      FROM CandidateIDs r1 
      WHERE NOT EXISTS (SELECT * FROM CandidateIDs WHERE CandidateIDs.idFailCandidate = r1.idOriginal) 
     ) fail ON fail.idFailCandidate = YourTable.id   

測試腳本

;WITH YourTable (id, match1, match2, startdate, enddate, status) AS (
    SELECT 1, 'AAA', 'BBB', CAST('2006-01-01' AS DATETIME), CAST('2007-01-01' AS DATETIME), NULL 
    UNION ALL SELECT 2, 'AAA', 'BBB', '2006-12-12', '2008-01-01', NULL 
    UNION ALL SELECT 3, 'AAA', 'BBB', '2008-01-01', '2012-02-01', NULL 
    UNION ALL SELECT 4, 'AAA', 'BBB', '2002-01-01', '2004-01-01', NULL 
    UNION ALL SELECT 5, 'DDD', 'EEE', '2009-01-01', '2012-01-01', NULL 
    UNION ALL SELECT 6, 'DDD', 'EEE', '2011-01-01', '2020-01-01', NULL 
    UNION ALL SELECT 7, 'DDD', 'EEE', '2013-01-01', '2015-01-01', NULL 
    UNION ALL SELECT 8, 'DDD', 'EFG', '2009-01-01', '2012-01-01', NULL 
) 
, CandidateIDs AS (
    SELECT idOriginal = YourTable.id, idFailCandidate = ed.id 
    FROM YourTable 
      INNER JOIN YourTable ed ON ed.match1 = YourTable.match1 
           AND ed.match2 = YourTable.match2 
           AND ed.startdate BETWEEN YourTable.startdate AND YourTable.enddate 
           AND ed.id <> YourTable.id 
)        
SELECT * 
FROM YourTable 
     INNER JOIN (
      SELECT idFailCandidate 
      FROM CandidateIDs r1 
      WHERE NOT EXISTS (SELECT * FROM CandidateIDs WHERE CandidateIDs.idFailCandidate = r1.idOriginal) 
     ) fail ON fail.idFailCandidate = YourTable.id