Question

I was wondering if we can do a select from dual and place our results at any of the result row? My desired result will be:

 CID        EXT
------    ------
ALL       ALL
--        --
DATAA     DATAA
DATAB     DATAB
DATAC     DATAC

I was doing

SELECT 'ALL' AS "CID"
   , 'ALL' AS "EXT"
FROM DUAL
UNION
SELECT *
FROM
(
   SELECT DISTINCT COLUMN AS "CID"
      ,  COLUMN AS "EXT"
   FROM TABLEA
)  

but my results were

CID        EXT
------    ------
--        --
ALL       ALL
DATAA     DATAA
DATAB     DATAB
DATAC     DATAC

Answer 1

OK, I think I found out the answer. If I used Jeffrey’s answer, I will get

ERROR: ORA-01785: ORDER BY item must be the number of a SELECT-list expression

So, I just changed to

SELECT 'ALL' AS "CID" , 'ALL' AS "EXT" FROM DUAL
UNION 
SELECT * FROM
( 
SELECT DISTINCT COLUMN AS "CID",  COLUMN AS "EXT"
 FROM TABLEA ORDER BY "CID", "EXT"
)  

Then my results work.