If isnull({table.field}) then
"do this"
else
"do that"
Not sure about the second part but you can try this.
You could put a running total (#runtot) to reset with each group. From the section expert, check suppress the detail section and in the x-2, add the following
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.