How do I know how many rows a Perl DBI query returns?

Question

I\'m trying to basically do a search through the database with Perl to tell if there is an item with a certain ID. This search can return no rows, but it can also return one

Answer 1

Change select to always return something? This should work in Sybase, dunno about other DBs.

my $th = $dbh->prepare(qq{SELECT count(*) FROM bounce_info WHERE bi_exim_id = '$exid'});
$th->execute();
if ($th->fetch()->[0]) {
....
}