MySQL Query Error select id,title,subtitle,class from dx_kskm_news where class='参考书' and kskm in ('101思想政治理论','201英语一','352口腔综合','201英语一或243德语','680口腔医学综合','306临床医学综合能力（西医）或352口腔综合','696口腔综合（学术）','201英语一或203日语','352口腔综合或699西医综合','704口腔综合一','713口腔临床综合','672学术学位口腔综合','698口腔基础综合','715口腔医学综合','352口腔综合或306临床医学综合能力（西医）','615口腔综合','699西医综合','712口腔临床综合','652口腔医学综合','649口腔医学综合','711口腔临床综合','705口腔医学技术','707口腔临床综合') order by kskm desc limit -1250,50 Warning: mysql_num_rows() expects parameter 1 to be resource, boolean given in D:\wwwroot\dddjyky\wwwroot\lanmu.php on line 331
