How would I write an expression for a slice to return data where no records are found in a child table?
I have two tables Personas and Notas.
Multiple Notas can be associated to a Person.
But a Person may not have any Notas.
In SQL, I would write it this way:
from Personas left outer join Notas on Personas.Persona ID = Notas.Persona ID
where Notas.Persona ID is null