小编Mtn*_*ris的帖子

我有一个表,主键(bigint),日期时间,值,foreignKey到配置表,包含100,000行.我希望能够获得一个可变时间间隔的行.例如.

    Select Timestamp, value from myTable where configID=3 
    AND{most recent for 15 min interval}

我有一个CTE查询,它返回间隔时间间隔的多行

    WITH Time_Interval(timestamp, value, minutes)
    AS
    (
       Select   timestamp, value, DatePart(Minute, Timestamp) from  myTable 
       Where Timestamp >= '12/01/2012' and Timestamp <= 'Jan 10, 2013' and 
       ConfigID = 435 and (DatePart(Minute, Timestamp) % 15) = 0
    )
    Select Timestamp, value, minutes from Time_Interval
    group by minutes, value, timestamp
    order by Timestamp

如:

  2012-12-19 18:15:22.040   6.98    15
  2012-12-19 18:15:29.887   6.98    15
  2012-12-19 18:15:33.480   7.02    15
  2012-12-19 18:15:49.370   7.01 …