Select rows with same id but different value in another column

Question

I tried for hours and read many posts but I still can\'t figure out how to handle this request:

I have a table like this:

+------+------+
|ARIDNR|LIE         


        

Answer 1

Use this

select * from (
 SELECT ARIDNR,LIEFNR,row_number() over 
     (partition by ARIDNR order by ARIDNR) as RowNum) a
where a.RowNum >1