SQL Server 按时间间隔提取数据进行数据采样

时间:2015-02-02 10:48:21   收藏:0   阅读:402
Select Ana1,RdDate,RdTime,cast(convert(varchar,RdDate,112)+' '+convert(varchar,RdTime,108) as datetime) as time,t.interval FROM 
(SELECT Ana1,RdDate,RdTime, datediff (mi,cast(convert(varchar,RdDate,112)+' '+convert(varchar,RdTime,108) as datetime), GETDATE()) AS interval  
FROM Records ) AS t WHERE t.interval%10 = 0  //获取间隔十分钟的数据,但是获取之后分钟相同的还会有重复,仍需进一步处理

原文:http://blog.csdn.net/wj512416359/article/details/43405449

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