right outer join
select ename,sal,job ,dname,dept.deptno from emp right outer join dept on emp.deptno=dept.deptno where dept.deptno in(10,20,40); html 上面SQL與下面的SQL是等價的，只是SQL寫法不一樣ide select ename,sal,job ,dname,dept.de
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相關文章
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