Re: Corrected SQL Question...

Igor Neyman wrote:
>
> Kirti,
>
> What about solution suggested by Stephane Faroult:
>
> select *
> from (select *
> from T
> connect by col1 = prior col2
> and col1 > col2) x
> where rownum <= (select count(*) from T)
> /
>
> ?
>
> Igor Neyman, OCP DBA
> ineyman_at_perceptron.com
>

Igor,

 I can answer that - col1 > col2 worked with the first sample of data, not with the second one. The problem is with the loops in the tree - CONNECT BY doesn't like round-trips from an airport and back! And since you cannot put a subquery in a CONNECT BY, you're toast.   I think, though, that you can probably use the tree walk if you do it in PL/SQL with a bulk select in an array. Previous experiments have shown to me that when the exception is raised, the data is returned anyway. Needless to say, it becomes messy :-).  

-- 
Regards,

Stephane Faroult
Oriole Software
-- 
Please see the official ORACLE-L FAQ: http://www.orafaq.net
-- 
Author: Stephane Faroult
  INET: sfaroult_at_oriole.com

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