$sth = $dbh->prepare("SELECT SUM(number) FROM $serverTable where name = \'$surname\'");

##</code><code>##

 $sth2 = $dbh->prepare("SELECT SUM(number) FROM $serverTabl_4 where name =
\'O'Connor\'");

##</code><code>##

 $sth2 = $dbh->prepare("SELECT SUM(number) FROM $serverTabl_4 where name =
\'O\'Connor\'");