Adding a static value to the results of an SQL query

Could you do a union in the query?

SELECT -1 AS ID , 'ALL THINGS' AS NAMEOFTHING FROM DUAL /*'FROM DUAL' is an Oracle thing,
                                                       not sure if you need to do 
                                                       something like that in DB2*/
UNION 
SELECT ID, NAMEOFTHING FROM LISTOFTHINGS ORDER BY NAMEOFTHING

Apparently, this is how it should be done for DB2

SELECT -1 AS ID , 'ALL THINGS' AS NAMEOFTHING FROM SYSIBM.SYSDUMMY1
UNION 
SELECT ID, NAMEOFTHING FROM LISTOFTHINGS ORDER BY NAMEOFTHING