SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 2)
   ExpressionList (children 1)
    Subquery (alias s) (children 1)
     SelectWithUnionQuery (children 1)
      ExpressionList (children 1)
       SelectQuery (children 1)
        ExpressionList (children 1)
         Function sumState (children 1)
          ExpressionList (children 1)
           Literal UInt64_1
   ExpressionList (children 1)
    Function sumMerge (children 1)
     ExpressionList (children 1)
      Identifier s
