Re: tuning a massive delete

rgaffuri_at_cox.net wrote:
>
> create table ani_prx_faster parallel (degree 5) nologging
> as
> select b.*
> from bo_owner_master.ani_prx b,
> bo_owner_stage.ani_prx a
> where a.cusip = b.cusip (+)
> and a.fund_no = b.fund_no (+)
> and a.add_cymd = b.add_cymd (+)
> and nvl(b.ba_reccode, 'X') != 'V'
> and b.cusip is null
>
> This query I got from here I got only 638k, and I have 27m records in my file and there are 17m deletes. so 12m records left. Also all the records are null????
>
> what do i need to change?
> >

Ooops, I have permuted a's and b's in the where clause ...

Otherwise not to sure about the nvl(). Wait a minute ... we are getting rows for which there is no matching (cusip, fund_no, add_cymd) in the staging table. Perhaps that the 'cusip is null' condition should go ... the nvl() should be enough.

-- 
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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