Sql server TQSL-将3个临时表（每个表包含日期跨度）组合到每个可能的组合中，而不会导致重叠

我尝试将三个临时表组合起来，每个表都有不同度量的开始和结束范围，以创建一个包含所有可能范围的组合表。下面的脚本创建了所有三个临时表，并（附加的Excel）显示了结果应该是什么，但我还无法实现这一点。：）

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这可能对你有帮助-

DECLARE @aoRepGroupMbrHistory TABLE 
(
       syUserID INT
     , aoRepGroupID INT
     , Hist_EffectStart DATETIME
     , Hist_EffectiveEnd DATETIME
     , RepGroupName VARCHAR(50)
)
INSERT INTO @aoRepGroupMbrHistory 
VALUES 
      (17716, 165, '2010-06-03 00:00:00.000', '2012-03-01 23:59:59.997', 'UG - All Skills Reps')
    , (17716, 772, '2012-03-02 00:00:00.000', '2012-06-26 23:59:59.997', 'UG - Tier 1 LC Reps')
    , (17716, 797, '2012-06-27 00:00:00.000', '2012-11-08 23:59:59.997', 'UG - Aggregators Reps')
    , (17716, 165, '2012-11-09 00:00:00.000', '2012-11-29 23:59:59.997', 'UG - All Skills Reps')
    , (17716, 797, '2012-11-30 00:00:00.000', '9999-01-01 00:00:00.000', 'UG - Aggregators Reps')

DECLARE @TeamMemberHistory TABLE
(
       syUserID INT
     , CRMTeamID INT
     , Active INT
     , HistoryStartDate DATETIME
     , HistoryEndDate DATETIME
)
INSERT INTO @TeamMemberHistory 
VALUES 
      (17716, 637, 1, '2011-04-20 00:00:00.000', '2012-05-15 23:59:59.997')
    , (17716, 634, 1, '2012-05-16 00:00:00.000', '2012-06-20 23:59:59.997')
    , (17716, 628, 1, '2012-06-21 00:00:00.000', '2012-10-23 23:59:59.997')
    , (17716, 636, 1, '2012-10-24 00:00:00.000', '2012-12-13 23:59:59.997')
    , (17716, 628, 1, '2012-12-14 00:00:00.000', '2013-04-17 23:59:59.997')
    , (17716, 676, 1, '2013-04-18 00:00:00.000', '9999-01-01 00:00:00.000')

DECLARE @TeamHistory TABLE
(
       CRMTeamID INT
     , TeamOwner_TeamID INT
     , Active INT
     , TeamName VARCHAR(25)
     , HistoryStartDate DATETIME
     , HistoryEndDate DATETIME
)
INSERT INTO @TeamHistory 
VALUES 
      (628, 222, 1, 'Team 126', '2011-01-10 00:00:00.000', '9999-01-01 00:00:00.000')
    , (634, 168, 1, 'Team 132', '2010-01-07 00:00:00.000', '9999-01-01 00:00:00.000')
    , (636, 935, 1, 'Team 134', '2011-05-09 00:00:00.000', '2013-02-12 23:59:59.997')
    , (636, 935, 1, 'Team 134', '2013-02-13 00:00:00.000', '9999-01-01 00:00:00.000')
    , (637, 192, 1, 'Team 135', '2010-08-03 00:00:00.000', '9999-01-01 00:00:00.000')
    , (676, 242, 1, 'Team 360', '2011-05-21 00:00:00.000', '9999-01-01 00:00:00.000')

SELECT
      th.syUserID
    , t.TeamName
    , t.CRMTeamID
    , t.TeamOwner_TeamID
    , h.aoRepGroupID
    , h.RepGroupName
    , dwEffectiveBeginDate = CONVERT(VARCHAR(10), th.HistoryStartDate, 101)
    , dwEffectiveEndDate = CONVERT(VARCHAR(10), th.HistoryEndDate, 101) 
FROM @TeamHistory t
JOIN @TeamMemberHistory th ON t.CRMTeamID = th.CRMTeamID
JOIN @aoRepGroupMbrHistory h ON th.syUserID = h.syUserID

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从示例结果推断您的意图是一项艰巨的工作。为什么不通过添加解释来改进您的问题？您建议的结果集的第一行的“dwEffectiveBeginDate”为2012-01-01，但您的任何数据都没有该日期。。。那日期是从哪里来的？酷。到目前为止你试过什么？

DECLARE @aoRepGroupMbrHistory TABLE 
(
       syUserID INT
     , aoRepGroupID INT
     , Hist_EffectStart DATETIME
     , Hist_EffectiveEnd DATETIME
     , RepGroupName VARCHAR(50)
)
INSERT INTO @aoRepGroupMbrHistory 
VALUES 
      (17716, 165, '2010-06-03 00:00:00.000', '2012-03-01 23:59:59.997', 'UG - All Skills Reps')
    , (17716, 772, '2012-03-02 00:00:00.000', '2012-06-26 23:59:59.997', 'UG - Tier 1 LC Reps')
    , (17716, 797, '2012-06-27 00:00:00.000', '2012-11-08 23:59:59.997', 'UG - Aggregators Reps')
    , (17716, 165, '2012-11-09 00:00:00.000', '2012-11-29 23:59:59.997', 'UG - All Skills Reps')
    , (17716, 797, '2012-11-30 00:00:00.000', '9999-01-01 00:00:00.000', 'UG - Aggregators Reps')

DECLARE @TeamMemberHistory TABLE
(
       syUserID INT
     , CRMTeamID INT
     , Active INT
     , HistoryStartDate DATETIME
     , HistoryEndDate DATETIME
)
INSERT INTO @TeamMemberHistory 
VALUES 
      (17716, 637, 1, '2011-04-20 00:00:00.000', '2012-05-15 23:59:59.997')
    , (17716, 634, 1, '2012-05-16 00:00:00.000', '2012-06-20 23:59:59.997')
    , (17716, 628, 1, '2012-06-21 00:00:00.000', '2012-10-23 23:59:59.997')
    , (17716, 636, 1, '2012-10-24 00:00:00.000', '2012-12-13 23:59:59.997')
    , (17716, 628, 1, '2012-12-14 00:00:00.000', '2013-04-17 23:59:59.997')
    , (17716, 676, 1, '2013-04-18 00:00:00.000', '9999-01-01 00:00:00.000')

DECLARE @TeamHistory TABLE
(
       CRMTeamID INT
     , TeamOwner_TeamID INT
     , Active INT
     , TeamName VARCHAR(25)
     , HistoryStartDate DATETIME
     , HistoryEndDate DATETIME
)
INSERT INTO @TeamHistory 
VALUES 
      (628, 222, 1, 'Team 126', '2011-01-10 00:00:00.000', '9999-01-01 00:00:00.000')
    , (634, 168, 1, 'Team 132', '2010-01-07 00:00:00.000', '9999-01-01 00:00:00.000')
    , (636, 935, 1, 'Team 134', '2011-05-09 00:00:00.000', '2013-02-12 23:59:59.997')
    , (636, 935, 1, 'Team 134', '2013-02-13 00:00:00.000', '9999-01-01 00:00:00.000')
    , (637, 192, 1, 'Team 135', '2010-08-03 00:00:00.000', '9999-01-01 00:00:00.000')
    , (676, 242, 1, 'Team 360', '2011-05-21 00:00:00.000', '9999-01-01 00:00:00.000')

SELECT
      th.syUserID
    , t.TeamName
    , t.CRMTeamID
    , t.TeamOwner_TeamID
    , h.aoRepGroupID
    , h.RepGroupName
    , dwEffectiveBeginDate = CONVERT(VARCHAR(10), th.HistoryStartDate, 101)
    , dwEffectiveEndDate = CONVERT(VARCHAR(10), th.HistoryEndDate, 101) 
FROM @TeamHistory t
JOIN @TeamMemberHistory th ON t.CRMTeamID = th.CRMTeamID
JOIN @aoRepGroupMbrHistory h ON th.syUserID = h.syUserID