UPDATE primary file with JOIN?

[Jack Crouch <j.crouch@xxxxxxxx>]

I have enjoyed years of being able to use the UPDATE and DELETE commands
from ASC's Sequel products while using the JOIN clause.   Only the primary
file is updated.

I have a new box without Sequel.    I am trying to get back to the crude
SQL/400 environment.   I read a book by James Coolbaugh called SQL/400 by
Example.   In here he has the mysterious statement:   "For our understanding
here, you need to know that starting with V4R3, you can update a field with
information from another file."

Well, that all he says about it.    And SQL/400 does not expect the JOIN
clause in the UPDATE.    Can someone elaborate on what he might have meant
by this?

Thanks,
Jack D. Crouch
Director of Information Systems
Stewart & Stevenson

Email: j.crouch@ssss.com  

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