Question

如何按5分钟的时间间隔对列进行分组？例如：

Date_Timing                    team
---------------------------------------         
2016-10-16-10:32:08            baseball            
2016-10-16-10:34:11            baseball             
2016-10-16-10:35:12            baseball              
2016-10-16-10:41:14            Soccer              
2016-10-16-10:43:15            soccer            
2016-10-16-10:44:19            soccer

，结果应该是;

team   
-------- 
baseball   
soccer           
Soccer

提前致谢。

Answer 1

试试这个：

SELECT team
FROM table_name
WHERE Date_Timing BETWEEN DATEADD('ss',-5,GETDATE()) AND GETDATE()
GROUP BY team

这将获得最后5秒的记录并按团队分组

Answer 2

您可以如下所示：

DECLARE @Tbl TABLE (Date_Timing DATETIME, team VARCHAR(50))

INSERT INTO @Tbl
VALUES
('2016-10-16 10:32:08', 'baseball'),            
('2016-10-16 10:34:11', 'baseball'),             
('2016-10-16 10:35:12', 'baseball'),              
('2016-10-16 10:41:14', 'Soccer'),              
('2016-10-16 10:43:15', 'soccer'),            
('2016-10-16 10:44:19', 'soccer')


;WITH CTE1 AS ( SELECT *, ROW_NUMBER() OVER (ORDER BY Date_Timing) AS RowId FROM @Tbl ),
CTE2
AS
(
    SELECT 
        A.Date_Timing ,
        A.team,
        DENSE_RANK() OVER (ORDER BY MIN(B.RowId)) [Group]
    FROM 
        CTE1 A CROSS JOIN CTE1 B
    WHERE 
        ABS(DATEDIFF(MINUTE, A.Date_Timing, B.Date_Timing)) BETWEEN 0 AND 5 -- 5 min
    GROUP BY 
        A.Date_Timing ,
        A.team  
)

SELECT
    A.team COLLATE SQL_Latin1_General_CP1_CS_AS AS team   
FROM
    CTE2 A
GROUP BY
    A.team COLLATE SQL_Latin1_General_CP1_CS_AS,
    A.[Group]

结果：

team
----------------
baseball
Soccer
soccer

Answer 3

按5分钟的时间间隔分组很大程度上取决于第一个间隔时隙的开始。您可以按照SQL Server纪元的分钟数除以5分组，如下例所示

DECLARE @Tbl TABLE (Date_Timing DATETIME, team VARCHAR(50))

INSERT INTO @Tbl
VALUES
('2016-10-16 10:32:08', 'baseball'),            
('2016-10-16 10:34:11', 'baseball'),             
('2016-10-16 10:35:12', 'baseball'),              
('2016-10-16 10:41:14', 'Soccer'),              
('2016-10-16 10:43:15', 'soccer'),            
('2016-10-16 10:44:19', 'soccer')

DECLARE @start_interval datetime
SET @start_interval = '00:01'

select 
  team COLLATE SQL_Latin1_General_CP1_CS_AS as team,
  DATEADD(MINUTE,5*floor(DATEDIFF(MINUTE,@start_interval,Date_Timing)/5),@start_interval) as time_interval 
from @Tbl 
group by team COLLATE sql_latin1_general_cp1_cs_as, 
    floor(DATEDIFF(MINUTE,@start_interval,Date_Timing)/5)

@start_interval设置为'00：01'表示我们从SQL Server纪元后的第一分钟开始间隔，因此根据您的数据，插槽将为10：31-10：35：59.999,10：36-10 ：40：59.999,10：41-10：45：59.999等等。尝试根据需要设置开始时间段。

将数据分组为5分钟的时间间隔

3 个答案: