本文使用的实例表结构与表的数据如下:
emp 员工表结构如下:
1. NameTypeNullableDefaultComments
2. -------------------------------------------
3. EMPNONUMBER(4)员工号
4. ENAMEVARCHAR2(10)Y员工姓名
5. JOBVARCHAR2(9)Y工作
6. MGRNUMBER(4)Y上级编号
7. HIREDATEDATEY雇佣日期
8. SALNUMBER(7,2)Y薪金
9. COMMNUMBER(7,2)Y佣金
10. DEPTNONUMBER(2)Y部门编号
dept 部门表:
1. NameTypeNullableDefaultComments
2. -----------------------------------------
3. DEPTNONUMBER(2)部门编号
4. DNAMEVARCHAR2(14)Y部门名称
5. LOCVARCHAR2(13)Y地点
提示:工资= 薪金+ 佣金
emp 表的现有数据如下:
1. SQL>select*fromemp;
2.
3. EMPNOENAMEJOBMGRHIREDATESALCOMMDEPTNO
4. ----------------------------------------------------------------
5. 7369SMITHCLERK79021980-12-17800.0020
6. 7499ALLENSALESMAN76981981-2-201600.00300.0030
7. 7521WARDSALESMAN76981981-2-221250.00500.0030
8. 7566JONESMANAGER78391981-4-22975.0020
9. 7654MARTINSALESMAN76981981-9-281250.001400.0030
10. 7698BLAKEMANAGER78391981-5-12850.0030
11. 7782CLARKMANAGER78391981-6-92450.0010
12. 7788SCOTTANALYST75661987-4-194000.0020
13. 7839KINGPRESIDENT1981-11-175000.0010
14. 7844TURNERSALESMAN76981981-9-81500.000.0030
15. 7876ADAMSCLERK77881987-5-231100.0020
16. 7900JAMESCLERK76981981-12-3950.0030
17. 7902FORDANALYST75661981-12-33000.0020
18. 7934MILLERCLERK77821982-1-231300.0010
19.
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