SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 1)
   ExpressionList (children 1)
    Function topKWeightedMerge (children 2)
     ExpressionList (children 1)
      Function initializeAggregation (children 1)
       ExpressionList (children 3)
        Literal \'topKWeightedState(1)\'
        Literal Float64_nan
        Function arrayJoin (children 1)
         ExpressionList (children 1)
          Function range (children 1)
           ExpressionList (children 1)
            Literal UInt64_10
     ExpressionList (children 1)
      Literal UInt64_1
