RE: Riddle me this.....

  • From: "Taylor, Chris David" <Chris.Taylor@xxxxxxxxxxxxxxx>
  • To: <jeremy.schneider@xxxxxxxxxxxxxx>, <Jeremy.Sheehan@xxxxxxx>
  • Date: Thu, 9 Apr 2009 14:50:58 -0500

Try this

select /*+ FULL */ * from pjm_nm_sttl_component 
where  sttl_id  in  -- this statement has the 'in'
(select  /*+ FULL */ sttl_id_iso from isolink_pjm_sttl_estim_w_iso 
 where  sttl_id   =  '131545258'                   
) 


> select  * from pjm_nm_sttl_component 
>     where  sttl_id  =  -- this statement has the '='
>  (select   sttl_id_iso from isolink_pjm_sttl_estim_w_iso 
>      where  sttl_id   =  '131545258'                   
>      ) 


Chris Taylor
Sr. Oracle DBA
Ingram Barge Company
Nashville, TN 37205
Office: 615-517-3355
Cell: 615-354-4799
Email: chris.taylor@xxxxxxxxxxxxxxx
 

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-----Original Message-----
From: oracle-l-bounce@xxxxxxxxxxxxx
[mailto:oracle-l-bounce@xxxxxxxxxxxxx] On Behalf Of Jeremy Schneider
Sent: Thursday, April 09, 2009 2:40 PM
To: Jeremy.Sheehan@xxxxxxx
Cc: oracle-l@xxxxxxxxxxxxx
Subject: Re: Riddle me this.....

Can you "explain plan" on both? Curious if it's doing a transformation,
might give something to search for in metalink...


SHEEHAN, JEREMY wrote:
> Ok.  Here's an interesting question that some developers threw at me.
I don't see anything wrong with the statement but it just does not
work....
>
>
> This statement does not work.....
>
> select  * from pjm_nm_sttl_component 
>     where  sttl_id  in  -- this statement has the 'in'
>  (select   sttl_id_iso from isolink_pjm_sttl_estim_w_iso 
>      where  sttl_id   =  '131545258'                   
>      ) 
>      
> but this one does:
>
> select  * from pjm_nm_sttl_component 
>     where  sttl_id  =  -- this statement has the '='
>  (select   sttl_id_iso from isolink_pjm_sttl_estim_w_iso 
>      where  sttl_id   =  '131545258'                   
>      )
>
>
> The subquery works.  I can even run the 4 statements.  It pulls back
the same data as the second statement above.  
>
> select  * from pjm_nm_sttl_component 
>     where  sttl_id  in (130637378)
>
> select  * from pjm_nm_sttl_component 
>     where  sttl_id  in ('130637378')
>
> select  * from pjm_nm_sttl_component 
>     where  sttl_id  = 130637378
>
> select  * from pjm_nm_sttl_component 
>     where  sttl_id  = '130637378'
>
> We're running 10.2.0.4 on AIX 5.3.7
>
> Any ideas?
>
> Jeremy 
> Consider the environment. Please don't print this e-mail unless you
really need to.
-- 
Jeremy Schneider
Chicago, IL
http://www.ardentperf.com

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