RE: SQL Help finding missing records

Hi Doug,

Sounds line a job for EXCEPTION JOIN......
Select detl.* from detl exception join hdr on (detl.key=hdr.key)

though there are many other alternatives....
Select detl.* from detl where not exists (select * from hdr where hdr.key = detl.key)

The second version, using the "not exists" clause is actually the more useful of the two solutions, because it is compatible with other SQL verbs beside SELECT.... For example, if you wanted to delete these orphaned records, you would NOT be able to do it with the exception join.... not allowed...

Delete from detl where not exists (select * from hdr where hdr.key = detl.key)

hth,
Eric DeLong

-----Original Message-----
From: rpg400-l-bounces@xxxxxxxxxxxx
[mailto:rpg400-l-bounces@xxxxxxxxxxxx]On Behalf Of Doug Palme
Sent: Wednesday, July 16, 2008 9:19 AM
To: RPG Midrange L
Subject: SQL Help finding missing records


I know I can do this with query, but in the spirit of learning - I would
prefer to do this with SQL.

I have two files SLSTRNHDRF - header file and SLSTRAN - Detail
file.....apparently we have some detail records that do not have a
corresponding header record and I want to double check the file and see if
there any more......I thought I could do it by querying the header file
for account / invoice records that do not match account and invoice fields
in the slstran.....but that did not seem to work.....

Suggestions?


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