Include Aggregation with 0 count in report definition?
I'm using a basic report definition which, for each ID of a class A, gives me the number of a instances in a class B using this ID in a row. I'm using a class join.
Using an aggregation and a COUNT, the report works, but it only shows the IDs of my class A and the number of class B instances using it when there is at least one element returned by the count function.
My question is: is it possible to include the instances of class A whose ID is not used by any instance of class B? Basically, the instances of class A with "0" as count?