my @where;
my @binds;
if ($emp_user_name ne "*")
{
    if ($bb_activity_code) {
        push @where, 'bb_activity_code LIKE ?';
        push @binds, "%$bb_activity_code%";
    }
    if ($bb_model) {
        push @where, 'bb_model = ?';
        push @binds, $bb_model
    }
    if ($bb_pin) {
        push @where, 'bb_pin LIKE ?';
        push @binds, "%$bb_pin%";
    }
    if ($bb_phone) {
        push @where, 'bb_phone LIKE ?';
        push @binds, "%$bb_phone%";
    }
    if ($bb_imei_esn_dec) {
        push @where, 'bb_imei_esn_dec LIKE ?';
        push @binds, "%$bb_imei_esn_dec%";
    }
    if ($bb_status) {
        push @where, 'bb_status = ?';
        push @binds, $bb_status
    }
    if ($bb_region_code) {
        push @where, 'bb_region_code = ?';
        push @binds, $bb_region_code
    }
    if (@where) {
        push @where 'emp_user_name LIKE ?';
        push @binds, "%$emp_user_name%";
    }
}
my $statement = "SELECT bb_id, emp_user_name, bb_activity_code, bb_model, bb_pin, bb_phone, bb_imei_esn_dec, bb_status, bb_region_code FROM blackberry";
$statement .= ' WHERE ' . join(' AND ', @where) if @where;
$statement .= ' ORDER BY emp_user_name';