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','701军事基础','810军事后勤基础','711军事基础','810导弹武器技术','611军事基础','811专业基础','801军事后勤学','201英语一或202俄语','701军事学基础','904军事后勤理论','611军事学基础理论','804军事后勤基础','618军事后勤保障综合','806军事理论基础','615卫生管理综合','651军事学基础','809作战基础知识','868军事装备学基础理论','811军事装备基础','822计算机网络','802自动控制原理','804系统工程','812维修工程学','818微波技术与天线','827管理学基础','807信号与系统','826装备保障基础','803雷达原理','842军用装备维修工程','809可靠性与维修性工程','883可靠性与维修性工程','881军事装备学概论','201英语一或202俄语或203日语','879军事装备理论','751军事基础','842专业基础','840军用装备维修工程','881武警装备技术基础','302数学二','301数学一') order by kskm desc limit -900,50 Warning: mysql_num_rows() expects parameter 1 to be resource, boolean given in D:\wwwroot\dddjyky\wwwroot\lanmu.php on line 331
