Hi You can do it in that way: Artist.PAINTINGS.outer().isNull()
On Sun, Feb 3, 2019 at 10:19 PM Amedeo Mantica <amedeomant...@me.com.invalid> wrote: > Hi all, > > Which is the correct Expression to use in order to select objects thats > have an 1:many relationship empty ? > > Thank you > Amedeo