如何删除“将varchar转换为数值类型数字的算术溢出错误”。在下面查询

Question

我在执行此问题时遇到异常，其中[DeviceName]是我想要该列的值的子字符串，直到DOT（。）。

这是我的查询：

select [DeviceName] as DeviceName, 
       Round(Sum(CAST([SentThroughput_MBpA] as decimal)),3) as TotalSentThroughput, 
       Round(Sum(CAST([ReceivedThroughput_MBpA] as decimal)),3) as TotalReceivedThroughput 
from[dbo].[DeviceUtilization]
where substring( [DeviceName],0,CHARINDEX('.',[DeviceName])) = 'BESWEB4' group by[DeviceName]