SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 1)
   ExpressionList (children 2)
    Function mapSubtract (alias res) (children 1)
     ExpressionList (children 2)
      Function tuple (children 1)
       ExpressionList (children 2)
        Function array (children 1)
         ExpressionList (children 2)
          Function toUInt8 (children 1)
           ExpressionList (children 1)
            Literal UInt64_1
          Literal UInt64_2
        Literal Array_[UInt64_1, UInt64_1]
      Function tuple (children 1)
       ExpressionList (children 2)
        Function array (children 1)
         ExpressionList (children 2)
          Function toUInt8 (children 1)
           ExpressionList (children 1)
            Literal UInt64_1
          Literal UInt64_2
        Literal Array_[UInt64_2, UInt64_2]
    Function toTypeName (children 1)
     ExpressionList (children 1)
      Identifier res
