26、选取编号界于'C0001'和'C0004'的客户编号、客户名称、客户地址
select CUST_ID,cust_name,addr
from customer
where cust_id between 'C0001' AND 'C0004'
27、计算出一共销售了几种产品
select count(distinct prod_id) as '共销售产品数'
from sale_item
28、将业务部员工的薪水上调3%
update employee
set salary=salary*1.03
where dept='业务'
29、由employee表中查找出薪水最低的员工信息
select *
from employee
where salary=
(select min(salary )
from employee )
30、使用join查询客户姓名为"客户丙"所购货物的"客户名称","定单金额","定货日期","电话号码"
select a.cust_id,b.tot_amt,b.order_date,a.tel_no
from customer a join sales b
on a.cust_id=b.cust_id and cust_name like '客户丙'
31、由sales表中查找出订单金额大于"E0013业务员在1996/10/15这天所接每一张订单的金额"的所有订单
select *
from sales
where tot_amt>all
(select tot_amt
from sales
where sale_id='E0013'and order_date='1996/10/15')
order by tot_amt
32、计算'P0001'产品的平均销售单价
select avg(unit_price)
from sale_item
where prod_id='P0001'
33、找出公司女员工所接的定单
select sale_id,tot_amt
from sales
where sale_id in
(select sale_id from employee
where sex='F')
34、找出同一天进入公司服务的员工
select a.emp_no,a.emp_name,a.date_hired
from employee a
join employee b
on (a.emp_no!=b.emp_no and a.date_hired=b.date_hired)
order by a.date_hired
35、找出目前业绩超过232000元的员工编号和姓名
select emp_no,emp_name
from employee
where emp_no in
(select sale_id
from sales
group by sale_id
having sum(tot_amt)<232000)
36、查询出employee表中所有女职工的平均工资和住址在"上海市"的所有女职工的平均工资
select avg(salary)
from employee
where sex like 'f'
union
select avg(salary)
from employee
where sex like 'f' and addr like '上海市%'
37、在employee表中查询薪水超过员工平均薪水的员工信息
Select *
from employee
where salary>( select avg(salary)
from employee)
38、 找出目前销售业绩超过10000元的业务员编号及销售业绩，并按销售业绩从大到小排序
Select sale_id ,sum(tot_amt)
from sales
group by sale_id
having sum(tot_amt)>10000
order by sum(tot_amt) desc
39、 找出公司男业务员所接且订单金额超过2000元的订单号及订单金额
Select order_no,tot_amt
From sales ,employee
Where sale_id=emp_no and sex='M' and tot_amt>2000
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