my $f = $c->model->prepare(q{
SELECT array_to_string(array_agg(username),', '),count(username)
FROM (SELECT uid, username FROM users ORDER BY username) u
JOIN groupmembers gm USING (uid)
my $f = $c->model->prepare(q{
SELECT array_to_string(array_agg(username),', '),count(username)
FROM (SELECT uid, username FROM users ORDER BY username) u
JOIN groupmembers gm USING (uid)