use DBI;
my $dbh = DBI->connect("DBI:mysql:database=your_db");
my $where = "(id = '" . join ("' OR id = '", @ids) . "')";
my $sth = $dbh->prepare("SELECT * FROM event WHERE $where");

##</code><code>##

while ($ref = $sth->fetchrow_hashref) {
    &do_stuff_with($ref->{'db_col_u_like'});
}