如何将现有数据从 nvarchar 转换为 SQL Server 中的浮点数

Question

I have a table Overseas in SQL Server take its data from an Excel sheet so numbers data sometimes is converted to text. I want to perform an analysis so I have to convert this text to float each time I load this Excel file.

I created another table with datatype float to copy the same table data to make analysis easier.

I tried this command; it works but the existing data doesn't get changed

SELECT 
    CONVERT(FLOAT, REPLACE([SalesValue],',','') )[SalesValue]
FROM 
    Overseas

sql table

For example : SalesValue column is nvarchar i want to convert it to float and the data existing converted from nvarchar to float .. i want the output like this

Any help or another easier way ?

Answer 1

Try below query : Use CAST method ,

SELECT CAST(REPLACE([SalesValue],',','') AS Float )[SalesValue]
FROM Overseas

Answer 2

最好将行从设计更改为浮动