Sorry, I don't have an answer but I'd explore one of the following options.

1. UNIONALL
2. both() for Vertex, bothE() for count, group by

On Monday, June 1, 2015 at 3:10:15 PM UTC-7, Andrey Yesyev wrote:
>
> Hi there,
>
> I need help with a query.
> My schema is pretty simple. Vertices are connected with Edges of type 
> RELATED which have property count.
> 2 vertices can have connection in both ways at the same time.
>
> V1--RELATED(count=17)-->V2
>
> V2--RELATED(count=3)-->V1
>
> I need to build a query that for vertex Vn, will find all vertices 
> connected with RELATED edge to this Vn and also, for each pair [Vn, Vx] 
> will calculate SUM of in_RELATED.count and out_RELATED.count.
>
> For that simple example above, this query result for V1 would be
>
> |  Vertex   |    Count    |
> |--------------------------------|
> |    V2      |      20        |
>
> Is it possible to do in one query at all?
>
> Any help is very much appreciated!
>
> -Andrey
>

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