VARCHAR to DECIMAL

Question

I want to convert a varchar(max) column to decimal(10,4).

When I try to use cast or convert I am getting an arit

Answer 1

You still haven't explained why you can't use a Float data type, so here is an example:

DECLARE @StringVal varchar(50)

SET @StringVal = '123456789.1234567'
SELECT @StringVal, CAST(@StringVal AS FLOAT)

SET @StringVal = '1.12345678'
SELECT @StringVal, CAST(@StringVal AS FLOAT)

SET @StringVal = '123456.1234'
SELECT @StringVal, CAST(@StringVal AS FLOAT)