I'm trying to use fbcopy to handle an upgrade, where I install a new
database and move the data from the old to the new.
the problem I have is that for some tables I need to insert where the data
does not already exist and update where it does exist (based on PK)

does such a method already exist ? if not suggestion on how to achieve it
are very welcome.

(This has to run from the unix command-line so gui tools or windows only
tools are no help)


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