Does dgraph support cascading delete？

[maaft]

@MichelDiz

I think if we support DQL mutations in the custom directive (aiming for Upsert Block here) we could have a custom delete that works like cascading. Would be very easy to do a recursive delete for example, with DQL delete operation.

You said “if we support”. I thought DQL is already supported in the custom directive? Never tried it though.

Are you talking about this example here for doing a recursive cascade delete with DQL? If so, can we also specify infinite depths? Also, what is the return type of this DQL upsert operation? Is it “Group”?

@MichelDiz

upsert {
  query {
    V as var(func: type(Group)) @filter(eq(name, "MyGroup")) @recurse(depth: 5) {
      REST uid
    }
  }

  mutation {
    delete {
      uid(V) * * .
      uid(REST) * * .
    }
  }
}