+% {
+<h2><a name="dataage">Data age summary</a></h2>
+<%perl>
+ my $sth_i= $dbh->prepare(<<END);
+ SELECT archipelago, islandid, islandname, timestamp
+ FROM uploads NATURAL JOIN islands
+ WHERE islandid = ?
+END
+ my $sth_a= $dbh->prepare(<<END);
+ SELECT archipelago, islandid, islandname, timestamp
+ FROM uploads NATURAL JOIN islands
+ WHERE archipelago = ?
+ ORDER BY islandname
+END
+ my $ix=$#islandids;
+ my $sth_current;
+ my %idone;
+ my $fetchrow= sub {
+ for (;;) {
+ if ($sth_current) {
+ my $row= $sth_current->fetchrow_hashref();
+ if ($row) {
+ next if $idone{$row->{'islandid'}}++;
+ return $row;
+ }
+ }
+ return undef if $ix < 0;
+ my $iid= $islandids[$ix];
+ if (defined $iid) {
+ $sth_i->execute($iid);
+ $sth_current= $sth_i;
+ } else {
+ my $arch= $archipelagoes[$ix];
+ die unless defined $arch && length $arch;
+ $sth_a->execute($arch);
+ $sth_current= $sth_a;
+ }
+ $ix--;
+ }
+ };
+</%perl>
+<&| query_age:agestable, now => $now, fetchrow => $fetchrow &>
+Islands shown in reverse order of visits.<br>
+</&>
+% }
+