Is it possible without a join

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

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

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