Query help

Dear Experts,

I need a query that can give query report of docnum and the doctotal of two or more POs of  one sales order.

For e.g., one SO with # 2010  has had two POs that having quanty 200  AUD for 1st PO and 100 AUD for 2nd PO.

So, in the report, the doctotal is 300 AUD.

Please provide me a soluton for this issue.

THanks,

Steve