my $addRoster = $dbh->prepare ("INSERT INTO Roster (Call,Owner)
                                VALUES (?,?)"); 
                                
$dbh->do("BEGIN");  # start a new transaction for all inserts

foreach my $row (@$info)  #the 'roster' sheet of Roster.xls  #20 Feb 2018
{
    ...blah...blah...
    
    $addRoster -> execute ($callsign, $owner);  
} 

$dbh->do("COMMIT"); #massive speed up by making one transaction!!