Is it possible without a self join

Question

Hi oracle guru
I have this query result expected is same but without using a join
with t as
( select 1 job_id,'First a' mess,to_date('18:08:2010 13:54:21','DD-MM-YYYY HH24:MI:SS) jtime from dual union all
select 2 ,'First b' ,to_date('18:08:2010 13:54:22','DD-MM-YYYY HH24:MI:SS) from dual union all
select 3 ,'Last a' ,to_date('18:08:2010 13:54:25','DD-MM-YYYY HH24:MI:SS) from dual union all
select 4 ,'Last b' ,to_date('18:08:2010 13:54:27','DD-MM-YYYY HH24:MI:SS) from dua )
select a.*,b.jtime from t a , t b where a.job_id b.job_id and trim(substr(a.mess,6,length(a.mess))) = trim(substr(b.mess,5,length(b.mess)))
Thanks
RP

Answer 1

Hi
When posting code on the forum, put {noformat}{noformat} (with the curly brackets and the word code in lowercase) above and below your code like this...
{noformat}{noformat}
SELECT *
FROM emp
{noformat}{noformat}
It will then appear like this, preserving formatting...SELECT *
FROM emp
Also, your example had about 8 errors in it. Please ensure that it at least runs before posting it. I think you actually meant this...WITH t
AS (SELECT 1 job_id,
'First a' mess,
TO_DATE('18:08:2010 13:54:21', 'DD-MM-YYYY HH24:MI:SS')
jtime
FROM DUAL
UNION ALL
SELECT 2,
' First b',
TO_DATE('18:08:2010 13:54:22', 'DD-MM-YYYY HH24:MI:SS')
FROM DUAL
UNION ALL
SELECT 3,
'Last a',
TO_DATE('18:08:2010 13:54:25', 'DD-MM-YYYY HH24:MI:SS')
FROM DUAL
UNION ALL
SELECT 4,
' Last b',
TO_DATE('18:08:2010 13:54:27', 'DD-MM-YYYY HH24:MI:SS')
FROM dual)
SELECT a.*, b.jtime
FROM t a, t b
WHERE a.job_id = b.job_id
AND TRIM(SUBSTR(a.mess, 6, LENGTH(a.mess))) =
TRIM(SUBSTR(b.mess, 5, LENGTH(b.mess)))
Cheers
Ben