Most databases have system tables that contain that information. You'll have to consult your documentation. However, to find just the fieldnames from a table, this hack should do it (though I probably wouldn't use something like this):
my $dbh = DBI->connect( $connection,$user, $pass,{RaiseError => 1});
my $sql = 'SELECT TOP 1 * FROM someTable';
my $sth = $dbh->prepare( $sql );
$sth->execute;
my $fields = $sth->fetchrow_hashref;
$sth->finish;
my @fields = keys %$fields;
Cheers,
Ovid
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