from customer a,
(select cust_id,cust_sum
from (select cust_id, sum(tot_amt) as cust_sum from sales
group by cust_id ) b where b.cust_sum =
( select max(cust_sum)
from (select cust_id, sum(tot_amt) as cust_sum from sales
group by cust_id ) c ) ) d
where a.cust_id=d.cust_id
--16、查找销售总额少于1000元的销售员编号、姓名和销售额 select emp_no,emp_name,d.sale_sum from employee a,
(select sale_id,sale_sum
from (select sale_id, sum(tot_amt) as sale_sum from sales
group by sale_id ) b
where b.sale_sum <1000 ) d
where a.emp_no=d.sale_id
--17、查找至少销售了3种商品的客户编号、客户名称、商品编号、商品名称、数量和金额 select a.cust_id,cust_name,b.prod_id,prod_name,d.qty,d.qty*d.unit_price from customer a, product b, sales c, sale_item d
where a.cust_id=c.cust_id and d.prod_id=b.prod_id and c.order_no=d.order_no and a.cust_id in ( select cust_id
from (select cust_id,count(distinct prod_id) prodid from (select cust_id,prod_id from sales e,sale_item f
where e.order_no=f.order_no) g group by cust_id
having count(distinct prod_id)>=3) h )
--18、查找至少与世界技术开发公司销售相同的客户编号、名称和商品编号、商品名称、数量和金额
select a.cust_id,cust_name,d.prod_id,prod_name,qty,qty*unit_price from customer a, product b, sales c, sale_item d
where a.cust_id=c.cust_id and d.prod_id=b.prod_id and c.order_no=d.order_no and not exists (select f.*
from customer x ,sales e, sale_item f
where cust_name='世界技术开发公司' and x.cust_id=e.cust_id and e.order_no=f.order_no and not exists ( select g.*
from sale_item g, sales h
where g.prod_id = f.prod_id and g.order_no=h.order_no and h.cust_id=a.cust_id) )
19、查找表中所有姓刘的职工的工号，部门，薪水 select emp_no,emp_name,dept,salary from employee
where emp_name like '刘%'
20、查找所有定单金额高于20000的所有客户编号 select cust_id from sales
where tot_amt>20000
21、统计表中员工的薪水在40000-60000之间的人数 select count(*)as 人数 from employee
where salary between 40000 and 60000
22、查询表中的同一部门的职工的平均工资，但只查询＂住址＂是＂上海市＂的员工 select avg(salary) avg_sal,dept from employee
where addr like '上海市%' group by dept
23、将表中住址为\上海市\的员工住址改为\北京市%update employee set addr = '北京市'
where addr like '上海市'
24、查找业务部或会计部的女员工的基本信息。 select emp_no,emp_name,dept from employee
where sex='F'and dept in ('业务','会计')
25、显示每种产品的销售金额总和，并依销售金额由大到小输出。 select prod_id ,sum(qty*unit_price) from sale_item group by prod_id
order by sum(qty*unit_price) desc
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40000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)>40000 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 40、 查询sales表中订单金额最高的订单号及订单金额。
Select order_no, tot_amt from sales
where tot_amt = (select max(tot_amt) from sales) 41、 查询在每张订单中订购金额超过24000元的客户名及其地址。
Select cust_name,addr from customer a,sales b where a.cust_id=b.cust_id and tot_amt>24000
42、 求出每位客户的总订购金额，显示出客户号及总订购金额，并按总订购金额降序排
列。
Select cust_id,sum(tot_amt) from sales
Group by cust_id
Order by sum(tot_amt) desc 43、 求每位客户订购的每种产品的总数量及平均单价，并按客户号，产品号从小到大排
列。
Select cust_id,prod_id,sum(qty),sum(qty*unit_price)/sum(qty)
From sales a, sale_item b Where a.order_no=b.order_no Group by cust_id,prod_id Order by cust_id,prod_id 44、 查询订购了三种以上产品的订单号。 Select order_no from sale_item
Group by order_no Having count(*)>3 45、 查询订购的产品至少包含了订单10003中所订购产品的订单。 Select distinct order_no
From sale_item a
Where order_no<>'10003'and not exists (
Select * from sale_item b where order_no ='10003' and not exists
(select * from sale_item c where c.order_no=a.order_no and c.prod_id=b.prod_id)) 46、 在sales表中查找出订单金额大于“E0013业务员在1996/11/10这天所接每一张订
单的金额”的所有订单，并显示承接这些订单的业务员和该订单的金额。 Select sale_id,tot_amt from sales
where tot_amt>all(select tot_amt from sales where sale_id='E0013' and
order_date='1996/11/10')
47、 查询末承接业务的员工的信息。 Select *
From employee a
Where not exists
(select * from sales b where a.emp_no=b.sale_id) 48、 查询来自上海市的客户的姓名，电话、订单号及订单金额。 Select cust_name,tel_no,order_no,tot_amt
From customer a ,sales b
Where a.cust_id=b.cust_id and addr='上海市' 49、 查询每位业务员各个月的业绩，并按业务员编号、月份降序排序。 Select sale_id,month(order_date), sum(tot_amt) from sales
group by sale_id,month(order_date) order by sale_id,month(order_date) desc 50、 求每种产品的总销售数量及总销售金额，要求显示出产品编号、产品名称，总数量
及总金额，并按产品号从小到大排列。
Select a.prod_id,prod_name,sum(qty),sum(qty*unit_price)
From sale_item a,product b Where a.prod_id=b.prod_id Group by a.prod_id,prod_name Order by a.prod_id 51、 查询总订购金额超过’C0002’客户的总订购金额的客户号，客户名及其住址。 Select cust_id, cust_name,addr
From customer
Where cust_id in (select cust_id from sales Group by cust_id
Having sum(tot_amt)>
(Select sum(tot_amt) from sales where cust_id='C0002')) 52、 查询业绩最好的的业务员号、业务员名及其总销售金额。
select emp_no, emp_name, sum(tot_amt)
from employee a, sales b where a.emp_no=b.sale_id group by emp_no,emp_name having sum(tot_amt)= (select max(totamt)
from (select sale_id,sum(tot_amt) totamt from sales
group by sale_id) c) 53、 查询每位客户所订购的每种产品的详细清单，要求显示出客户号，客户名，产品号，
产品名，数量及单价。
select a.cust_id, cust_name, c.prod_id, prod_name,qty, unit_price
from customer a,sales b, sale_item c, product d
where a.cust_id=b.cust_id and b.order_no=c.order_no and c.prod_id=d.prod_id 54、 求各部门的平均薪水，要求按平均薪水从小到大排序。 select dept, avg(salary) from employee group by dept
order by avg(salary)