MS Sql查询检索每15分钟时间间隔的数据

即时通讯使用MS Sql Server 2008 R2数据库。我试图每隔15分钟从数据库中获取数据。所以我想这个查询MS Sql查询检索每15分钟时间间隔的数据

我的表名是记录和我有一样的日期，温度，压力列

SELECT MIN([Date]) AS Rext 
    FROM Records where Date between '2017-01-27 00:00:00' and '2017-02-11 00:00:00' 
    GROUP BY DATEPART(YEAR, [Date]), 
    DATEPART(MONTH, [Date]), 
    DATEPART(DAY, [Date]), 
    DATEPART(HOUR, [Date]), 
    (DATEPART(MINUTE, [Date])/15) 
    ORDER BY Rext

此查询，我和15个间隔时间即时得到日期列工作差距。这是我的输出

2017-01-27 18:45:43.000 
2017-01-27 19:00:35.000 
2017-01-27 19:15:35.000 
2017-01-27 19:30:35.000 
2017-01-27 19:45:35.000 
2017-01-27 20:00:35.000 
2017-01-27 20:15:35.000 
2017-01-27 20:30:35.000 
2017-01-27 20:45:35.000

但是当我试图用日期列IM GE沿检索等栏目（温度和压力）输出但间隔不匹配。我查询像

SELECT MIN([Date]) AS Rext , Temperature, Pressure 
    FROM Records where Date between '2017-01-27 00:00:00' and '2017-02-11 00:00:00' 
    GROUP BY DATEPART(YEAR, [Date]), 
    DATEPART(MONTH, [Date]), 
    DATEPART(DAY, [Date]), 
    DATEPART(HOUR, [Date]), 
    (DATEPART(MINUTE, [Date])/15) 
    ORDER BY Rext,Temperature, Pressure

而且我的输出是

2017-01-27 18:45:43.000 18.1  57   
2017-01-27 18:46:43.000 17.9  57   
2017-01-27 18:47:43.000 17.9  58   
2017-01-27 18:50:35.000 18   57   
2017-01-27 19:00:35.000 18   57   
2017-01-27 19:03:35.000 17.9  57   
2017-01-27 19:15:35.000 18.1  57   
2017-01-27 19:16:35.000 18   57   
2017-01-27 19:21:35.000 17.9  57   
2017-01-27 19:30:35.000 18   57   
2017-01-27 19:31:35.000 18.1  57   
2017-01-27 19:33:35.000 17.9  57   
2017-01-27 19:38:35.000 17.9  58   
2017-01-27 19:39:34.000 17.9  56   
2017-01-27 19:40:35.000 17.8  54   
2017-01-27 19:41:35.000 17.9  53   
2017-01-27 19:42:35.000 18   49   
2017-01-27 19:43:35.000 17.9  49   
2017-01-27 19:44:35.000 18   46   
2017-01-27 19:45:35.000 17.9  43   
2017-01-27 19:46:35.000 18   42   
2017-01-27 19:47:35.000 17.9  40   
2017-01-27 19:48:34.000 18   39   
2017-01-27 19:49:35.000 18.1  37   
2017-01-27 19:50:35.000 18.3  36   
2017-01-27 19:51:35.000 18.5  34   
2017-01-27 19:52:35.000 18.6  33   
2017-01-27 19:53:35.000 18.7  31   
2017-01-27 19:54:35.000 18.8  30   
2017-01-27 19:55:35.000 19.1  29   
2017-01-27 19:56:35.000 19.3  28   
2017-01-27 19:58:35.000 19.5  27   
2017-01-27 19:59:35.000 19.6  27   
2017-01-27 20:00:35.000 19.7  26   
2017-01-27 20:01:34.000 19.5  26   
2017-01-27 20:02:35.000 19.4  26   
2017-01-27 20:04:35.000 19.5  25   
2017-01-27 20:06:35.000 19.4  25   
2017-01-27 20:07:35.000 19.3  25   
2017-01-27 20:15:35.000 19.4  25   
2017-01-27 20:16:34.000 19.3  25   
2017-01-27 20:18:35.000 19.5  25   
2017-01-27 20:20:35.000 19.5  24   
2017-01-27 20:21:35.000 19.3  24   
2017-01-27 20:22:35.000 19.4  24   
2017-01-27 20:28:35.000 19.6  24   
2017-01-27 20:30:35.000 19.6  24   
2017-01-27 20:31:35.000 19.5  24   
2017-01-27 20:35:35.000 19.4  24   
2017-01-27 20:45:35.000 19.6  24   
2017-01-27 20:47:35.000 19.5  24   
2017-01-27 21:00:35.000 19.5  24   
2017-01-27 21:01:35.000 19.6  23   
2017-01-27 21:05:47.000 19.7  23   
2017-01-27 21:14:47.000 19.8  23   
2017-01-27 21:15:47.000 19.7  23   
2017-01-27 21:16:47.000 19.8  23   
2017-01-27 21:20:47.000 19.8  22

请任何一个帮助我。 THANK YOU

来源

2017-07-27 Praveen reddy

快捷：当你使用多合一条件为所有其他列（非聚合）在选择应该来分组条款。 – SenthilPrabhu

您发布的查询会导致错误。请发布实际的查询，生成你说你得到的结果。 –

SELECT DATEADD(minute,DATEDIFF(minute,0,Date)/15*15,0) AS Rext , MIN(Temperature), MAX(Pressure) 
    FROM Records where Date between '2017-01-27 00:00:00' and '2017-02-11 00:00:00' 
    GROUP BY DATEADD(minute,DATEDIFF(minute,0,Date)/15*15,0), Temperature, Pressure 
    ORDER BY 1

快捷：每当你使用聚合条件选择所有其他列（非聚合）应在GROUP BY子句

来源

2017-07-27 07:40:07 SenthilPrabhu

我也试过这个你对我提出的建议，但是间隔时间不正确 –

尽量让日期四舍五入，以便group by子句能够完美地工作。 DATEADD（分，DATEDIFF（分钟，0，DT）/ 15 * 15,0）。你可以参考https://social.msdn.microsoft.com/Forums/sqlserver/en-US/8364f9c8-65c6-4297-b9ff-5c2cf39ead4b/round-up-datetime-in-15-minute-increments?forum=ssdt – SenthilPrabhu

MS Sql查询检索每15分钟时间间隔的数据

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