Repeated Subgraph Error

[BlakeMScurr]

Any query query with expand(_all_) and another predicate at the same level fails with "Repeated subgraph: [<pred>] while using expand()". Just as this unit test fails.

This prevents us from writing queries like:

{
	me(func:anyofterms(name, "Alice")) {
		expand(_all_)
		friend {
                     name
                }
	}
}

From my point of view, it would be nice to implicitly exclude the friend predicate from expand(_all_), so that you can get all values of a node and particular values of its children.

[peterstace]

This seems pretty reasonable to me.

[manishrjain]

This could be done by blocks.

{
  alice as var(func: anyofterms(name, "Alice"))
  all(func: uid(alice)) {
    expand(_all_)  
  }
  friends(func: uid(alice)) {
    friend { name }
  }
}

If this doesn't work for you, let us know. I doubt we need to change the behavior of expansion, given this.