Re: delete orphaned records in SQL

Rick,

what about the following (works from V4R3M0 upwards, lower versions maybe):

     delete from detailfile where dkey1||dkey2 not in (select hkey1||hkey2
from headerfile)

HTH,

Peter Colpaert
Application Developer

Honda Europe NV
Langerbruggestraat 104
B-9000 GENT
Peter.Colpaert@honda-eu.com
Tel: +32 9 2501 334
Fax: +32 9 2501 231
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"Captain, I cannot believe my ears!" - Spock
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"Richard B Baird" <rbaird@esourceconsulting.com>@midrange.com on 08/03/2002
14:22:15

Please respond to midrange-l@midrange.com

Sent by:  midrange-l-admin@midrange.com


To:   midrange-l@midrange.com
cc:

Subject:  delete orphaned records in SQL


hey all,

I want to write an sql statement to delete orphaned records from a detail
file (as relates to the header).

the files have a multi-field key relationship.  it's several key fields,
but I'll reduce to two for examples sake.

can I do something like this?

delete
  from detailfile
 where (dkey1, dkey2) in
       (select dkey1, dkey2
          from detailfile exception join
               headerfile
            on dkey1 = hkey1 and
               dkey2 = hkey2)

Thanks,

rick



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