%select graph.id, histogram(distance(vertex, 10).distance, [0, 1, 2, 4, 8, 16, 32, 64, 128])
%from graph(*) group by graph.id

min_dist@* = MinDistOperator([], 10, *);
histogram@* = HistogramOperator([min_dist@local], min_dist, Double, [0, 1, 2, 4, 8, 16, 32, 64, 128]);
union@1 = UnionOperator([histogram@*]);
histogramMerge@1 = HistogramMergeOperator([union@local]);