Oracle scott 表关系图打开
时间:2017-11-28 00:16:33
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select * from emp; select deptno,job from emp select deptno,job from emp group by deptno ,job select deptno,job from emp group by deptno ,job order by deptno
原文:http://www.cnblogs.com/albertzz1987/p/7906624.html
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