The methodology you describe is exactly what I am doing. The idea of attempting the update from within the fail block is interesting, and something I hadn't considered. Thank you!

I note that you use $dbh->do rather than prepare/execute. Obviously, that is easier, but are there caveats to running several million do's as opposed to one prepare and millions of execute(@values)?

Also, is there a good reason not to do: 

foreach (my @row = $sth->fetchrow_array) {
    eval {
        $dbh2->do( $insert_statement, {}, @row );
    }; if ($@) {
        eval {
            $dbh2->do( $update_statement, {}, @row );
        }; if ($@) {
            addto_Skip(@row);
        }
    }
}

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In reply to Re^2: Superior way to update SQL tables by radiantmatrix
in thread Superior way to update SQL tables by radiantmatrix

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