Почему PDO выдает ошибку?

Запрос:

SELECT * FROM `companys` 
    INNER JOIN `countrys` USING(country_id) 
    INNER JOIN `prices` ON `companys`.`company_id` = `prices`.`company_id` 
    INNER JOIN `service_description` USING(description_id) 
WHERE 
    `RU` = "1" AND 
    `companys`.`security` = "YES" AND 
    SOME( 
        SELECT `price` FROM `prices` 
            INNER JOIN `service_description` USING(description_id) 
        WHERE `service_name` = "?" 
    ) > "?"

Данные:

array(2) { [0]=> string(9) "dedic_min" [1]=> string(2) "10" }

Ошибка:
Fatal error: Uncaught exception 'PDOException' with message 'SQLSTATE[42000]: Syntax error or access violation: 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 '( SELECT `price` FROM `prices` INNER JOIN `service_d' at line 1'