摘要:
Hadoop Eclipse插件 报错。 使用 hadoop-eclipse-kepler-plugin-2.2.0.jar 如下所示 Error Log 强迫症看了 受不了 The command ("dfs.browser.action.delete") is undefined The com 阅读全文
摘要:
select sname from student where not exists (select * from course where not exists (select * from sc where sno =student.sno and cno=course.cno); 最内部的 s 阅读全文