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 '1.2100122100154E+19,11' at line 1
select id,title,titleurl,titlepic,smalltext from ***_ecms_appnews where gameid=4231 and leixing=67 order by id desc limit 1.2100122100154E+19,11