DB2常用sql demo

1、查找员工的编号、姓名、部门和出生日期,如果出生日期为空值,显示日期不详,并按部门排序输出,日期格式为yyyy-mm-dd。 

select emp_no,emp_name,dept,isnull(convert(char(10),birthday,120),日期不详) birthday
from employee
order by dept
 

  2、查找与喻自强在同一个单位的员工姓名、性别、部门和职称

select emp_no,emp_name,dept,title
from employee
where emp_name<>喻自强 and dept in
(select dept from employee
where emp_name=喻自强)  

  3、按部门进行汇总,统计每个部门的总工资

select dept,sum(salary)
from employee
group by dept
 

  4、查找商品名称为14寸显示器商品的销售情况,显示该商品的编号、销售数量、单价和金额

select a.prod_id,qty,unit_price,unit_price*qty totprice
from sale_item a,product b
where a.prod_id=b.prod_id and prod_name=14寸显示器  

  5、在销售明细表中按产品编号进行汇总,统计每种产品的销售数量和金额

select prod_id,sum(qty) totqty,sum(qty*unit_price) totprice
from sale_item
group by prod_id
 

  6、使用convert函数按客户编号统计每个客户1996年的订单总金额

select cust_id,sum(tot_amt) totprice
from sales
where convert(char(4),order_date,120)=1996
group by cust_id  

  7、查找有销售记录的客户编号、名称和订单总额

select a.cust_id,cust_name,sum(tot_amt) totprice
from customer a,sales b
where a.cust_id=b.cust_id
group by a.cust_id,cust_name  

  8、查找在1997年中有销售记录的客户编号、名称和订单总额

select a.cust_id,cust_name,sum(tot_amt) totprice
from customer a,sales b
where a.cust_id=b.cust_id and convert(char(4),order_date,120)=1997
group by a.cust_id,cust_name  

  9、查找一次销售最大的销售记录

select order_no,cust_id,sale_id,tot_amt
from sales
where tot_amt=
(select max(tot_amt)
from sales)  

  10、查找至少有3次销售的业务员名单和销售日期

select emp_name,order_date
from employee a,sales b 
where emp_no=sale_id and a.emp_no in
(select sale_id
from sales
group by sale_id
having count(*)>=3)
order by emp_name  

  11、用存在量词查找没有订货记录的客户名称

select cust_name
from customer a
where not exists
(select *
from sales b
where a.cust_id=b.cust_id)  

  12、使用左外连接查找每个客户的客户编号、名称、订货日期、订单金额订货日期不要显示时间,日期格式为yyyy-mm-dd按客户编号排序,同一客户再按订单降序排序输出

select a.cust_id,cust_name,convert(char(10),order_date,120),tot_amt
from customer a left outer join sales b on a.cust_id=b.cust_id
order by a.cust_id,tot_amt desc  

  13、查找16M DRAM的销售情况,要求显示相应的销售员的姓名、性别,销售日期、销售数量和金额,其中性别用男、女表示

select emp_name 姓名, 性别= case a.sex when m then 
when f then  
else 
end,
销售日期= isnull(convert(char(10),c.order_date,120),日期不详),
qty 数量, qty*unit_price as 金额
from employee a, sales b, sale_item c,product d
where d.prod_name=16M DRAM and d.prod_id=c.prod_id and
a.emp_no=b.sale_id and b.order_no=c.order_no 

  14、查找每个人的销售记录,要求显示销售员的编号、姓名、性别、产品名称、数量、单价、金额和销售日期

select emp_no 编号,emp_name 姓名, 性别= case a.sex when m then 
when f then  
else 
end,
prod_name 产品名称,销售日期= isnull(convert(char(10),c.order_date,120),日期不详),
qty 数量, qty*unit_price as 金额
from employee a left outer join sales b on a.emp_no=b.sale_id , sale_item c,product d
where d.prod_id=c.prod_id and b.order_no=c.order_no
 

  15、查找销售金额最大的客户名称和总货款

select cust_name,d.cust_sum
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 



      

26、选取编号界于C0001C0004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=E0013and 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)  


      

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2000的所有客户编号

select cust_id
from sales
where tot_amt>2000
 

  21、统计表中员工的薪水在4000-6000之间的人数

select count(*)as 人数
from employee
where salary between 4000 and 6000  

  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 like 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=Fand 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  

 

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DB2常用sql demo

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