Combining 2 reports in webi

Hi ,

We have 2 reports , this 2 reports are created by using 2 different universe .

we need to compare report 1 data with report 2 , and we need to get unmatched records of report 2 .

ex :

Report 1 :

empno emp name emp doj

10          aaa               01/01/115

20       bbb                  03/01/15

30       ccc                   04/0/15

Report 2 :

empno empadd

10        ahg

40        bhj

50       ggg

20     jjjj

here if we compare report1 with report 2 we will get emp 30  as result.

Thanks.