SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 1)
   ExpressionList (children 1)
    Function arrayCumSum (children 1)
     ExpressionList (children 2)
      Function lambda (children 1)
       ExpressionList (children 2)
        Function tuple (children 1)
         ExpressionList (children 1)
          Identifier x
        Function materialize (children 1)
         ExpressionList (children 1)
          Literal UInt64_10
      Function emptyArrayString (children 1)
       ExpressionList
