SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 1)
   ExpressionList (children 1)
    Function countDigits (children 1)
     ExpressionList (children 1)
      Function CAST (children 1)
       ExpressionList (children 2)
        Function plus (children 1)
         ExpressionList (children 2)
          Function intDiv (children 1)
           ExpressionList (children 2)
            Function CAST (children 1)
             ExpressionList (children 2)
              Literal Int64_-1
              Literal \'UInt256\'
            Literal UInt64_2
          Literal UInt64_1
        Literal \'Int256\'
