If I do this:

my $d = DBI->connect( 'stuff', 'user', 'pass' )
  || die("couldn't connect to database");
my ($min,$max) = $d->selectrow_array(
"SELECT min(id),max(id) from images where foo like 'bar%'"
)
[download]

then $max comes out undef.

But if I run that from the command line mysql client, it looks fine.

mysql> SELECT min(id),max(id) from images where foo like 'bar%';
+---------+---------+
| min(id) | max(id) |
+---------+---------+
|   61893 |   62437 |
+---------+---------+
1 row in set (0.59 sec)
[download]

So, what am I missing?