怎么把NVarchar转换成十进制？

Question

I have a column as nvarchar(max) whose value is

'1.7925e+006'

How can this be converted to decimal? I have tried as below

declare @pd as nvarchar(max) = '1.7925e+006'
Select convert(decimal(18, 2), @pd)

but I get an erorr:

Msg 8114, Level 16, State 5, Line 4
Error converting data type nvarchar to numeric.

Please suggest.

Answer 1

由于字符串表示浮点数，因此您需要先将值转换为float ，然后再转换为decimal ：

SELECT CONVERT(decimal(18,2),CONVERT(float,'1.7925e+006'));