A Database Error Occurred

Error Number: 2013

Lost connection to MySQL server during query

SELECT b.subject, b.no, b.reg_date, b.hit, b.comment_count FROM (board_list as a) JOIN admin_contents as b ON a.structure_id=b.structure_id WHERE `a`.`structure_id` = '12' AND `b`.`is_delete` = 'N' GROUP BY b.no ORDER BY b.reg_date desc