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 Create table 5000 x 12
Dbindcol     660153.156  recs/sec    4.8 x faster  DBC
...
arrayref     525486.075  recs/sec    3.8 x faster  AR
array        227086.929  recs/sec    1.7 x faster  A
hashref      136836.344  recs/sec                  HR

    {   $sth->execute;
        my ($n, $now) = (0, [ gettimeofday ]);
...
            }
        report ("Dbindcol", $n, $now);
        }