SQL Query : < SELECT Mt.code, Mt.nbsp, Mt.name, Mt.secret, Mt.title, Mt.hit, Mt.divider, Mt.reg_time, date_format( Mt.reg_date, '%y/%m/%d' ) AS `reg_date`, COUNT( Ct.parent_code ) AS `cmtnum` FROM MgBD_question AS Mt LEFT OUTER JOIN MgBD_question_CM AS Ct ON Mt.code = Ct.parent_code GROUP BY Mt.code ORDER BY Mt.porder DESC LIMIT 8624,16 >\n Error (Count : 6 ) \n Got error -1 from storage engine