SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 2)
   ExpressionList (children 2)
    Identifier number
    Function hex (alias r) (children 1)
     ExpressionList (children 1)
      Function base64Decode (children 1)
       ExpressionList (children 1)
        Function base64Encode (children 1)
         ExpressionList (children 1)
          Function repeat (children 1)
           ExpressionList (children 2)
            Literal \'a\'
            Identifier number
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      Function numbers (children 1)
       ExpressionList (children 1)
        Literal UInt64_100