K
Size: a a a
K
К
К
F
g
S
К
L
DS
SELECT COUNT(`id
) as countGuests
FROM users_online
WHERE id_user
IS` NULL;
SELECT COUNT(`id
) as countUsers
FROM users_online
WHERE id_user
IS` NOT NULL;
А
SELECT COUNT(`id
) as countGuests
FROM users_online
WHERE id_user
IS` NULL;
SELECT COUNT(`id
) as countUsers
FROM users_online
WHERE id_user
IS` NOT NULL;
DS
А
L
SELECT COUNT(`id
) as countGuests
FROM users_online
WHERE id_user
IS` NULL;
SELECT COUNT(`id
) as countUsers
FROM users_online
WHERE id_user
IS` NOT NULL;
DS
countGuests
и countUsers
DS