my $query = $dbh->prepare(q{UPDATE users SET timezone = $2 WHERE uid = $1});
eval{
$dbh->selectrow_array(q{SELECT NOW() AT TIME ZONE $1},undef,$timezone);
my $query = $dbh->prepare(q{UPDATE users SET timezone = $2 WHERE uid = $1});
eval{
$dbh->selectrow_array(q{SELECT NOW() AT TIME ZONE $1},undef,$timezone);