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','651军事学基础','874军事智能专业基础','301数学一','803信号与系统80%电路分析20%','806计算机组成原理和操作系统','818作战环境仿真与作战环境分析','813计算机网络','807信号与系统','824指挥信息系统','811数据结构','837人工智能','302数学二','853军事智能理论基础','802信号与线性系统','871人工智能导论','885空军合同战术','886无人机任务规划','887航空通信原理','821电子技术基础','882军事智能基础一','883军事智能基础二','201英语一或202俄语或203日语','805智能化战争与作战','813军事智能基础理论','831信号与系统','861运筹学基础') order by kskm desc limit -1650,50 Warning: mysql_num_rows() expects parameter 1 to be resource, boolean given in D:\wwwroot\dddjyky\wwwroot\lanmu.php on line 331
