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 countUsersDS