一些sql精华语句

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)