04参数联动.rar
表格样式设置问题
第五题2.rar
04参数联动.zip
参考
select * from 表 where 1=1
${if(isnull(classno),"","and classno='"+ classno+"'")}
${if(isnull(student),"","and classno='"+ student+"'")}
GROUP BY classno