Needs a Sum distinct function

Hi All,

I am creating a report using BIDS 2005. In the textbox expression, I need a formula that will calculate the sum of only distinct values from the field. I tried several options but none worked. For e.g if the values in the field of the table are 100, 100, 100, 60, 30, the sum distinct value must show 190. Using sum function I get total as 390 due to which report shows incorrect results. 

Any help will be greatly appreciated. 

Thanks and Regards,

Roopkumar

Thanks and Regards, Roopkumar Kamat (MCITP) Please click Mark As Answer; if a post resolves your problem or Vote As Helpful; if a post has been useful to you.