学习DB2数据库必须掌握的五十四条常用语句

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