MySQL Query Error select id,title,subtitle,class from dx_kskm_news where class='参考书' and ejxk_id in ('070200','070201','070203','070205','070207','070202','070253','070260','070206','070204','070258','070272','070208','070251','070257','070274','070255','070256','070271','070265','070269','070259','070254','070264','070268','070266','070267','070263','070262','070276','070220','070277','070278','070279','070281','70202','70200','70255','70205','70207','70208','70280','70201','070280') order by kskm desc limit -450,50 Warning: mysql_num_rows() expects parameter 1 to be resource, boolean given in D:\wwwroot\dddjyky\wwwroot\lanmu2.php on line 330
