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首先构建场景
相应表中数据如下:
1 SELECT * FROM EMPLOYEE;
1 SELECT * FROM DEPTINFO;
1 SELECT E.EMPNAME, D.DEPNAME 2 FROM EMPLOYEE E, DEPTINFO D 3 WHERE E.DEPTID = D.DEPID 4 ORDER BY DEPNAME;
1 SELECT E.EMPNAME, D.DEPNAME
2 FROM EMPLOYEE E
3 JOIN DEPTINFO D
4 ON E.DEPTID = D.DEPID
5 ORDER BY DEPNAME;
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原文地址:http://www.cnblogs.com/zhaowencong/p/4210615.html