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Traditional approach was to use NOT EXISTS.
SELECT *
FROM table1 a
WHERE NOT EXISTS
(SELECT * FROM table2 b WHERE a.mykey = b.mykey)
There are other ways.
Elvis
Celebrating 10-Years of SQL Performance Excellence on IBM i5/OS and OS/400
www.centerfieldtechnology.com
-----Original Message-----
Subject: Re: SQL Exception join
Wrong Tommy,
Table1
mykey
A
B
C
Table2
mykey
B
C
D
A left outer join will return all. An exception join will only return A.
Rob Berendt
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