Converting SQL Server Top N to Oracle Equivalent
- From: mkb <mkb125@xxxxxxxxx>
- To: oracle-l@xxxxxxxxxxxxx
- Date: Wed, 22 Oct 2008 18:56:43 -0700 (PDT)
Hi,
Gota SS2K5 query that I'm trying to convert over to Oracle 10gR2.
This is the SS2K5 query:
select top 1 ALG.time_stamp
from ALG, CHG
where ALG.change_id = CHG.id
and (type = 'CL' or type = 'RE')
order by ALG.time_stamp ASC
I coded the Oracle 10gR2 equivalent as follows:
select b.time_stamp
from (
select alg.time_stamp
from ALG, CHG
where ALG.change_id = CHG.id
and (type = 'CL' or type = 'RE')
order by ALG.time_stamp asc) b
where rownum <= 1
order by rownum asc
/
Is this the correct way to do it? I wish I could check the results between the
SS2K5 db and the Oracle db but I don't have access to the SS db and even if I
did, the data sets are very different.
Anyway, just wanted to know if I was on the right track or am I totally
off-base here.
tia
--
mohammed
--
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