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sql语句实现部门人数少于三人的部门号…部门与员工的sql笔试题

2014-03-20 09:23阅读：

http://blog.sina.cn/dpool/blog/u/2051981195



比如：你的表名称为“员工表”。表内含有字段：姓名、部门等等。。 要求：查找人数超过3人（不包含3人）的部门，并列出员工数量。 结果：通过sql查询，查询表中显示“部门”和“员工数量”两个字段。 语句：该sql查询的语句如下——

SELECT 部门, Count(员工) AS 员工数量 FROM 员工表 GROUP BY 部门 HAVING (((Count(Distinct 员工))>3));


以下为转载，谢谢某博主！


DEPARTMENTS:

DEPARTMENT_ID(primary key),

DEPARTMENT_NAME,

LOCATION

05

06 EMPLOYEES:

07 EMPLOYEE_ID(primary key),

08 EMPLOYEE_NAME,

09 EMPLOYEE_JOB,

10 MANAGER,

11 SALARY,

12 DEPARTMENT_ID

列出EMPLOYEES表中各部门的部门号，最高工资，最低工资
  1. 1 select max(SALARY) as 最高工资,min(SALARY) as 最低工资,DEPARTMENT_ID from EMPLOYEES group by DEPARTMENT_ID;
  2. 列出EMPLOYEES表中各部门EMPLOYEE_JOB为'CLERK'的员工的最低工资，最高工资
  3. 1 select max(SALARY) as 最高工资,min(SALARY) as 最低工资,DEPARTMENT_ID as 部门号 from EMPLOYEES where EMPLOYEE_JOB = 'CLERK' group by DEPARTMENT_ID;
  4. 对于EMPLOYEES中最低工资小于1000的部门，列出EMPLOYEE_JOB为'CLERK'的员工的部门号，最低工资，最高工资

  5. 1 select max(SALARY) as 最高工资,min(SALARY) as 最低工资,DEPARTMENT_ID as 部门号 from EMPLOYEES as b

    2 where EMPLOYEE_JOB ='CLERK' and 1000>(select min(SALARY) from EMPLOYEES as a where a.DEPARTMENT_ID = b.DEPARTMENT_ID) group by b.DEPARTMENT_ID

  6. 根据部门号由高而低，工资有低而高列出每个员工的姓名，部门号，工资
  7. 1 select DEPARTMENT_ID as 部门号,EMPLOYEE_NAME as 姓名,SALARY as 工资 from EMPLOYEES order by DEPARTMENT_ID desc,SALARY asc
  8. 写出对上题的另一解决方法

  9. 1 还没想到，如果你又答案，请联系www.nowamagic.net，我的联系方式在网站首页。

  10. 列出'张三'所在部门中每个员工的姓名与部门号

  11. 1 select EMPLOYEE_NAME,DEPARTMENT_ID from EMPLOYEES where DEPARTMENT_ID = (select DEPARTMENT_ID from EMPLOYEES where EMPLOYEE_NAME = '张三')

  12. 列出每个员工的姓名，工作，部门号，部门名

  13. select EMPLOYEE_NAME,EMPLOYEE_JOB,EMPLOYEES.DEPARTMENT_ID,DEPARTMENTS.DEPARTMENT_NAME from EMPLOYEES,DEPARTMENTS where EMPLOYEES.DEPARTMENT_ID = DEPARTMENTS.DEPARTMENT_ID

  14. 列出EMPLOYEES中工作为'CLERK'的员工的姓名，工作，部门号，部门名

  15. 1 select EMPLOYEE_NAME,EMPLOYEE_JOB,DEPARTMENTS.DEPARTMENT_ID,DEPARTMENT_NAME from EMPLOYEES,DEPARTMENTS where DEPARTMENTS.DEPARTMENT_ID = EMPLOYEES.DEPARTMENT_ID andDEPARTMENT_JOB = 'CLERK'

  16. 对于EMPLOYEES中有管理者的员工，列出姓名，管理者姓名（管理者外键为MANAGER）

  17. 1 select a.EMPLOYEE_NAME as 姓名,b.EMPLOYEE_NAME as 管理者 from EMPLOYEES as a,EMPLOYEES as b where a.MANAGER is not null and a.MANAGER = b.EMPLOYEE_ID

  18. 对于DEPARTMENTS表中，列出所有部门名，部门号，同时列出各部门工作为'CLERK'的员工名与工作

  19. 1 select DEPARTMENT_NAME as 部门名,DEPARTMENTS.DEPARTMENT_ID as 部门号,EMPLOYEE_NAME as 员工名,EMPLOYEE_JOB as 工作 from DEPARTMENTS,EMPLOYEES

    2 where DEPARTMENTS.DEPARTMENT_ID *= EMPLOYEES.DEPARTMENT_ID and EMPLOYEE_JOB = 'CLERK'

  20. 对于工资高于本部门平均水平的员工，列出部门号，姓名，工资，按部门号排序

  21. 1 select a.DEPARTMENT_ID as 部门号,a.EMPLOYEE_NAME as 姓名,a.SALARY as 工资 from EMPLOYEES as a

    2 where a.SALARY>(select avg(SALARY) from EMPLOYEES as b where a.DEPARTMENT_ID = b.DEPARTMENT_ID) order by a.DEPARTMENT_ID

  22. 对于EMPLOYEES，列出各个部门中平均工资高于本部门平均水平的员工数和部门号，按部门号排序

  23. 1 select count(a.SALARY) as 员工数,a.DEPARTMENT_ID as 部门号 from EMPLOYEES as a

    2 where a.SALARY>(select avg(SALARY) from EMPLOYEES as b where a.DEPARTMENT_ID = b.DEPARTMENT_ID) group by a.DEPARTMENT_ID order by a.DEPARTMENT_ID

  24. 对于EMPLOYEES中工资高于本部门平均水平，人数多与1人的，列出部门号，人数，按部门号排序

  25. 1 select count(a.EMPLOYEE_ID) as 员工数,a.DEPARTMENT_ID as 部门号,avg(SALARY) as 平均工资 from EMPLOYEESas a

    2 where (select count(c.EMPLOYEE_ID) from EMPLOYEES as c where c.DEPARTMENT_ID = a.DEPARTMENT_IDand c.SALARY>(select avg(SALARY) from EMPLOYEES as b where c.DEPARTMENT_ID = b.DEPARTMENT_ID))>1

    3 group by a.DEPARTMENT_ID order by a.DEPARTMENT_ID

  26. 对于EMPLOYEES中低于自己工资至少5人的员工，列出其部门号，姓名，工资，以及工资少于自己的人数

  27. 1 select a.DEPARTMENT_ID,a.EMPLOYEE_NAME,a.SALARY,(select count(b.EMPLOYEE_NAME) from EMPLOYEES asb where b.SALARY < a.SALARY) as 人数 from EMPLOYEES as a

    2 where (select count(b.EMPLOYEE_NAME) from EMPLOYEES as b where b.SALARY5


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