SQL\SSRS Report\Query only show null recordset

Hi,

So Im getting there with SSRS and doing the majority ofthe work as an SQL view and then adding that view to the report. One thing I am stuck with is getting a report to only show records where a field is null.

For example I am quering for outstanding orders, all items which I dont need on the report have a value in the location column and all records I do need have an empty value in the location column.

Is there a way I can filter our if that column is null or not? I think Im correct in saying ISNULL will allow you to add a value to a null field could I use that and then filter on this?

Thanks