SQL Server, where field is int?

Question

how can I accomplish:

select * from table where column_value is int

I know I can probably inner join to the system tables and type tables b

Answer 1

Why not use the following and test for 1?

DECLARE @TestValue nvarchar(MAX)
SET @TestValue = '1.04343234e5'

SELECT CASE WHEN ISNUMERIC(@TestValue) = 1
        THEN CASE WHEN ROUND(@TestValue,0,1) = @TestValue
            THEN 1
            ELSE 0
            END
        ELSE null
        END AS Analysis