Sql 我需要返回基于日期的连续数据集中重复值的最大计数

以下是我的表格示例：

MID RecordDate  Volume
5555    4/1/2017    1
5555    4/2/2017    2
5555    4/3/2017    2
5555    4/4/2017    2
5555    4/5/2017    3
5555    4/6/2017    3
5555    4/7/2017    3
5555    4/8/2017    3
5555    4/9/2017    3
5555    4/10/2017   3
5555    4/11/2017   3
5555    4/12/2017   3
5555    4/13/2017   3
5555    4/14/2017   3
5555    4/15/2017   3
5555    4/16/2017   3
5555    4/17/2017   3
5555    4/18/2017   3
5555    4/19/2017   3
5555    4/20/2017   3
5555    4/21/2017   3
5555    4/22/2017   3
5555    4/23/2017   3
5555    4/24/2017   3
5555    4/25/2017   3
5555    4/26/2017   2
5555    4/27/2017   2
5555    4/28/2017   2
5555    4/29/2017   2
5555    4/30/2017   2

我试图返回定义时间段内具有相同容量的连续天数计数。在我的示例中，数据是从2017年4月1日到2017年4月30日，但实际上，我想将其调整到30/40/60/90天的任何日期范围

我的预期结果与此类似：

+------+-------------+------------+---------+--------+
| MID  |  Start Date |  End Date  |  Volume |  Count |
+------+-------------+------------+---------+--------+
| 5555 |  4/5/2017   |  4/25/2017 |       3 |     21 |
+------+-------------+------------+---------+--------+

我为我糟糕的格式预先道歉。提前谢谢

这是该示例的解决方案代码，其他人是否可以帮助我对一个具有多个MID的表执行此操作，其中我需要提取每个MID的最大插值计数：

with cte as 
(
Select top 1
    md1.merrickid
  , StartDate = convert(char(10),min(md1.RecordDate),120)
  , EndDate   = convert(char(10),max(md1.RecordDate),120)
  , md1.EstGasVolMCF
  , cnt       = count(*)
From (
  Select md.MerrickID
  , md.RecordDate
  , md.EstGasVolMCF
    , grp = row_number() over (partition by md.merrickid  order by md.RecordDate) 
          - row_number() over (partition by md.merrickid, md.EstGasVolMCF order by md.RecordDate) 
  From MeterDailyTb as md

  Join CompletionTb as C
    On c.MerrickID = md.MerrickID
  Where md.RecordDate > '3/2/2017' --Parameter for the how far back you want to go
    And c.DrillingTeamID in (24)--Drilling Team Selection Criteria
  ) as md1

--Where md1.merrickid = '105100'
group by md1.merrickid, md1.EstGasVolMCF, grp
order by cnt desc
)
Select *
From cte
Where cte.cnt > 30

这是一个类型问题，可以使用两个s来整理您的岛屿

select 
    mid
  , StartDate = min(RecordDate)
  , EndDate   = max(RecordDate)
  , Volume
  , cnt       = count(*)
from (
  select *
    , grp = row_number() over (partition by mid  order by RecordDate) 
          - row_number() over (partition by mid, volume order by RecordDate) 
  from t
  ) as s
group by mid, volume, grp
order by mid, StartDate

rextester演示：

dbfiddle.uk演示：

返回：

+------+------------+------------+--------+-----+
| mid  | StartDate  |  EndDate   | Volume | cnt |
+------+------------+------------+--------+-----+
| 5555 | 2017-04-01 | 2017-04-01 |      1 |   1 |
| 5555 | 2017-04-02 | 2017-04-04 |      2 |   3 |
| 5555 | 2017-04-05 | 2017-04-25 |      3 |  21 |
| 5555 | 2017-04-26 | 2017-04-30 |      2 |   5 |
+------+------------+------------+--------+-----+

---

要仅返回计数最高的一行，请使用

top 1

和

order by cnt desc

select top 1
    mid
  , StartDate = convert(char(10),min(RecordDate),120)
  , EndDate   = convert(char(10),max(RecordDate),120)
  , Volume
  , cnt       = count(*)
from (
  select *
    , grp = row_number() over (partition by mid  order by RecordDate) 
          - row_number() over (partition by mid, volume order by RecordDate) 
  from t
  ) as s
group by mid, volume, grp
order by cnt desc

返回：

+------+------------+------------+--------+-----+
| mid  | StartDate  |  EndDate   | Volume | cnt |
+------+------------+------------+--------+-----+
| 5555 | 2017-04-05 | 2017-04-25 |      3 |  21 |
+------+------------+------------+--------+-----+

---

有关最新问题：

配合使用

还是没有

---

请尝试使用以下代码：

    DECLARE @Record TABLE (MID INT,RecordDate DATE, Volume INT)
    INSERT INTO @Record VALUES
    (5555,'4/1/2017',1),
    (5555,'4/2/2017',2),
    (5555,'4/3/2017',2),
    (5555,'4/4/2017',2),
    (5555,'4/5/2017',3),
    (5555,'4/6/2017',3),
    (5555,'4/7/2017',3),
    (5555,'4/8/2017',3),
    (5555,'4/9/2017',3),
    (5555,'4/10/2017',3),
    (5555,'4/11/2017',3),
    (5555,'4/12/2017',3),
    (5555,'4/13/2017',3),
    (5555,'4/14/2017',3),
    (5555,'4/15/2017',3),
    (5555,'4/16/2017',3),
    (5555,'4/17/2017',3),
    (5555,'4/18/2017',3),
    (5555,'4/19/2017',3),
    (5555,'4/20/2017',3),
    (5555,'4/21/2017',3),
    (5555,'4/22/2017',3),
    (5555,'4/23/2017',3),
    (5555,'4/24/2017',3),
    (5555,'4/25/2017',3),
    (5555,'4/26/2017',2),
    (5555,'4/27/2017',2),
    (5555,'4/28/2017',2),
    (5555,'4/29/2017',2),
    (5555,'4/30/2017',2)

    SELECT 
        DISTINCT(Volume),
        COUNT(*)AS [Count],
        MID,
        MIN(RecordDate) AS StartDate,
        MAX(RecordDate) AS EndDate
    FROM 
        @Record
    GROUP BY 
        Volume,MID

---

您使用的是哪种DBMS？将表和数据作为文本Microsoft SQL Server Hi Zim发布。雷克斯测试仪今天能为您工作吗。我无法打开它。@JuanCarlosOropeza在rextester上对我没有问题。不过我会加一把db提琴。奇怪。DBFIDLE open ok，但rextester没有：（…但不仅仅是您的，我今天尝试创建了几次都没有成功。看起来我的办公室互联网有问题，我远程访问我的家用电脑，并且在那里工作正常。顺便说一句，我可能想要

订单计数（*）DESC

@JuanCarlosOropeza啊，对。更新为

top 1

cnt DESC

感谢您花时间发布此可能的解决方案。唯一的问题是，这没有考虑到我只想根据日期范围计算相同且连续的值。间隙和孤岛解决方案正是相同的我需要的解决方案。

with cte as 
(
select 
    md1.merrickid
  , StartDate = convert(char(10),min(md1.RecordDate),120)
  , EndDate   = convert(char(10),max(md1.RecordDate),120)
  , md1.EstGasVolMCF
  , cnt       = count(*)
  , rn        = row_number() over (partition by mid order by count(*) desc)
From (
  Select md.MerrickID
  , md.RecordDate
  , md.EstGasVolMCF
    , grp = row_number() over (partition by md.merrickid  order by md.RecordDate) 
          - row_number() over (partition by md.merrickid, md.EstGasVolMCF order by md.RecordDate) 
  From MeterDailyTb as md

  Join CompletionTb as C
    On c.MerrickID = md.MerrickID
  Where md.RecordDate > '3/2/2017' --Parameter for the how far back you want to go
    And c.DrillingTeamID in (24)--Drilling Team Selection Criteria
  ) as md1

--Where md1.merrickid = '105100'
group by md1.merrickid, md1.EstGasVolMCF, grp
)
Select *
From cte
Where cte.cnt > 30 
  and cte.rn = 1

    DECLARE @Record TABLE (MID INT,RecordDate DATE, Volume INT)
    INSERT INTO @Record VALUES
    (5555,'4/1/2017',1),
    (5555,'4/2/2017',2),
    (5555,'4/3/2017',2),
    (5555,'4/4/2017',2),
    (5555,'4/5/2017',3),
    (5555,'4/6/2017',3),
    (5555,'4/7/2017',3),
    (5555,'4/8/2017',3),
    (5555,'4/9/2017',3),
    (5555,'4/10/2017',3),
    (5555,'4/11/2017',3),
    (5555,'4/12/2017',3),
    (5555,'4/13/2017',3),
    (5555,'4/14/2017',3),
    (5555,'4/15/2017',3),
    (5555,'4/16/2017',3),
    (5555,'4/17/2017',3),
    (5555,'4/18/2017',3),
    (5555,'4/19/2017',3),
    (5555,'4/20/2017',3),
    (5555,'4/21/2017',3),
    (5555,'4/22/2017',3),
    (5555,'4/23/2017',3),
    (5555,'4/24/2017',3),
    (5555,'4/25/2017',3),
    (5555,'4/26/2017',2),
    (5555,'4/27/2017',2),
    (5555,'4/28/2017',2),
    (5555,'4/29/2017',2),
    (5555,'4/30/2017',2)

    SELECT 
        DISTINCT(Volume),
        COUNT(*)AS [Count],
        MID,
        MIN(RecordDate) AS StartDate,
        MAX(RecordDate) AS EndDate
    FROM 
        @Record
    GROUP BY 
        Volume,MID