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 '),concat((select concat(CHAR(52),CHAR(67),CHAR(117),CHAR(52),CHAR(118),CHAR(110)' at line 5

select whos_online_id, count from whos_online_year where year = 2025 and month = 2 and referer_url = '(SELECT (CASE WHEN (1725=9855) THEN 'and(select 1 from(select count(),concat((select concat(CHAR(52),CHAR(67),CHAR(117),CHAR(52),CHAR(118),CHAR(110),CHAR(72),CHAR(107),CHAR(106),CHAR(48),CHAR(66)) from information_schema.tables limit 0,1),floor(rand(0)2))'

[XT SQL Error]