SQL Error: 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 '-30, 30' at line 19 at /www/ca-fe.ru/htdocs/system/mappers/comments.mysql.mapper.php line 165

Array
(
    [code] => 1064
    [message] => 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 '-30, 30' at line 19
    [query] => 
		SELECT SQL_CALC_FOUND_ROWS
			c.*,
			u.user_login AS author_login,
			u.user_avatar_ext AS author_avatar_ext,
			t.topic_id AS essence_id,
			t.topic_title AS essence_title
		FROM
			comments AS c,
			users AS u,
			topics AS t
		WHERE
			u.user_id=c.author_id
		AND
			t.topic_id=c.essence_id
		AND
			t.is_hidden IS NULL
		ORDER BY
			c.comment_added
		DESC LIMIT -30, 30
		
    [context] => /www/ca-fe.ru/htdocs/system/mappers/comments.mysql.mapper.php line 165
)