以2分钟为间隔获取每种类型的总数

Question

Get the total count for each type in 2 mins interval.

INPUT or Table I have:

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Desired Output

I am struggling with the Query, how can I iterate through each 2 mins.

Answer 1

You need to create a calendar table and then join on it to get groups:

DECLARE @t TABLE(t TIME, tp INT, cn INT)

INSERT INTO @t VALUES
('00:00:01', 1, 1),
('00:00:15', 2, 1),
('00:00:16', 2, 1),
('00:00:17', 2, 1),
('00:01:59', 3, 1),
('00:01:59', 3, 1)

;WITH tally AS(SELECT TOP 720 DATEADD(mi, 2 * ROW_NUMBER() 
                  OVER(ORDER BY(SELECT NULL)) - 2, CAST('00:00:00' AS TIME)) AS starttime,
                              DATEADD(ss, -1, DATEADD(mi, 2 * ROW_NUMBER() 
                  OVER(ORDER BY(SELECT NULL)) , CAST('00:00:00' AS TIME))) AS endtime
               FROM (VALUES(1),(1),(1),(1),(1),(1),(1),(1),(1),(1)) t1(n)
               CROSS JOIN (VALUES(1),(1),(1),(1),(1),(1),(1),(1),(1),(1)) t2(n)
               CROSS JOIN (VALUES(1),(1),(1),(1),(1),(1),(1),(1),(1),(1)) t3(n))
SELECT ta.starttime, 
       ta.endtime, 
       t.tp, 
       SUM(t.cn) AS cn 
FROM @t t
JOIN tally ta ON t.t BETWEEN ta.starttime AND ta.endtime
GROUP BY t.tp, ta.starttime, ta.endtime

tally is you calendar table. Top 720 is just for full 24 hours.

Output:

starttime           endtime             tp  cn
00:00:00.0000000    00:01:59.0000000    1   1
00:00:00.0000000    00:01:59.0000000    2   3
00:00:00.0000000    00:01:59.0000000    3   2

If you want to include all types in each time group then you can do the following:

;WITH tally AS(SELECT TOP 720 DATEADD(mi, 2 * ROW_NUMBER() 
                  OVER(ORDER BY(SELECT NULL)) - 2, CAST('00:00:00' AS TIME)) AS starttime,
                              DATEADD(ss, -1, DATEADD(mi, 2 * ROW_NUMBER() 
                  OVER(ORDER BY(SELECT NULL)) , CAST('00:00:00' AS TIME))) AS endtime
               FROM (VALUES(1),(1),(1),(1),(1),(1),(1),(1),(1),(1)) t1(n)
               CROSS JOIN (VALUES(1),(1),(1),(1),(1),(1),(1),(1),(1),(1)) t2(n)
               CROSS JOIN (VALUES(1),(1),(1),(1),(1),(1),(1),(1),(1),(1)) t3(n)),
      types AS(SELECT DISTINCT tp FROM @t)
SELECT ta.starttime, 
       ta.endtime, 
       tp.tp, 
       ISNULL(SUM(t.cn), 0) AS cn 
FROM tally ta 
CROSS JOIN types tp
LEFT JOIN @t t ON tp.tp = t.tp AND t.t BETWEEN ta.starttime AND ta.endtime
GROUP BY tp.tp, ta.starttime, ta.endtime
ORDER BY ta.starttime

Answer 2

You can use UNION ALL :

SELECT DISTINCT
   '00:00:00 - 00:01:59' AS [Time],
   [Type],
   SUM(Count) OVER(PARTITION BY [Type]) AS [Count]
FROM Your_Table
WHERE [Time] BETWEEN '00:00:00' AND '00:01:59'

UNION ALL

SELECT DISTINCT
   '00:02:00 - 00:02:59' AS [Time],
   [Type],
   SUM(Count) OVER(PARTITION BY [Type]) AS [Count]
FROM Your_Table
WHERE [Time] BETWEEN '00:02:00' AND '00:02:59'

UNION ALL

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