Select *
From DETAIL left exception join HEADER on HEADER.OHOHNO = DETAIL.ODOHNO;

Note that EXCEPTION JOIN isn't a SQL standard, and not all RDBMS support it.

HTH




-----Original Message-----
From: James H. H. Lampert [mailto:jamesl@xxxxxxxxxxxxxxxxx]
Sent: Tuesday, November 26, 2019 1:22 PM
To: Midrange Systems Technical Discussion <midrange-l@xxxxxxxxxxxxxxxxxx>
Subject: Quick SQL question

Ladies and Gentlemen:

Given a header table H, and a detail table D, tied together with an "order number" field that is OHOHNO in H, and ODOHNO in D, is there an SQL syntax that would produce a list of "orphaned" details that have no header?

--
JHHL


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