MYSQL ERROR (1064): You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ')' at line 1 in SELECT id, gender, nickname, fullname as full, city, type,FLOOR((TO_DAYS(CURDATE())-TO_DAYS(birthday))/365.25) AS age FROM user WHERE id IN ()

FLOOR((TO_DAYS(CURDATE())-TO_DAYS(birthday))/365.25) AS age
Что это означает?

Кол-во полей 7... но ошибка не исчезает.

С уважением.