I have an Access 2007 report which is grouped by RoomType_ID
I need to do a running count on each line within the Group so that I end up with something like:
RoomType_ID 1 1 Mr and Mrs Smith 2 Mr and Mrs Jones 3 Mr and Mrs Smythe
RoomType_ID 2 1 Mr Foo 2 Mrs Bar
etc...
How can I go about getting this?