Please extend delegation of Sum and CountRows for the basic datasources:
Delegation for countrows would be extremely useful. Is this planned for 2019 for CDS and/or SQL Server?
So this feature request is 2.5 years old...
Having the inability to do the equivalent of a "select count" SQL query is super frustrating. At this point, I'm considering adding a "is_one" column to my tables where every row has an int value of 1, so I can use Sum() to count the rows, assuming I could still use delegation when nesting a Filter insde the Sum.
Any updates form Microsoft on this?