I'm trying to write a report For CRM Online in FetchXML. I want to use pre-filtering to force users to run the report from the Account form so the results are limited to one account because my database is quite large and if they use the Advanced Find they are likely to break the report.
So ,
Building DS uses a query which includes a pre-filtering parameter, '@AccountNo' &
Floor DS uses a query which includes a pre-filtering parameter, '@Building' &
Room DS uses a query which includes a pre-filtering parameter, '@Floor' and so on.
My Issue for example if Floor not have any Room i need to add empty value to Room DS to get the result .