Count virtual aggregate based on time window in API docs

I figured out the solution. This is how to add a virtual aggregate field to get a "This Week" column to only count records from the last 7 days.

Add field, type = virtual

DB Function =
Count_BIG(CASE WHEN DateField > GETDATE() - 8 THEN 1 ELSE NULL END)

check the "aggregate DB Function?" box.

It's actually more efficient to do this math in DreamFactory than in the sql.