SQL Server: Error converting data type varchar to float

Question

I have the following SELECT statement to calculate RADIANS and COS.

SELECT COS(RADIANS(latitude)) as Lat 
FROM tbl_geomet         


        

Answer 1

Use try_convert() to find the invalid data:

select latitude
from tbl_geometry
where try_convert(float, latitude) is null;

try_convert() is available in SQL Server 2012+.