标签: c# mongodb mongodb-.net-driver
我正在使用官方C#驱动程序。不知道实现这个: Select MAX(TimeStamp) as MaxTimeStamp, ExtNo From AgentStatus Where TimeStamp>=@begin and TimeStamp <=@end Group By ExtNo 任何帮助?谢谢!
Select MAX(TimeStamp) as MaxTimeStamp, ExtNo From AgentStatus Where TimeStamp>=@begin and TimeStamp <=@end Group By ExtNo
答案 0 :(得分:0)
已经使用MapReduce来解决问题:)一个简单的演示HERE