SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 2)
   ExpressionList (children 3)
    Identifier idna
    Function tryIdnaEncode (alias ascii) (children 1)
     ExpressionList (children 1)
      Identifier idna
    Function idnaDecode (alias original) (children 1)
     ExpressionList (children 1)
      Identifier ascii
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier tab