How to user Running-difference

[thrishul]

Hi all

what is the use of running-difference . how can i use running-difference in cognos

[SharifJ02]

It shows the change in a value of a row from its previous row.  Think of unemployment numbers: you have column for month and then another for # of unemployed.  You would use the running-difference to show the change of month 2 from month 1.

Month	Num of Unemployed	Change
January	200,000	*
February	160,000	-40,000
March	220,000	60,000