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

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

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

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寸顯示器'

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

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

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

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

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

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

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

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

select emp_name 姓名, 性別= case a.sex when 'm' then '男'
when 'f' then '女'
else '未'
end,
銷售日期= isnull(convert(char(10),c.order_date,120),'日期不詳'),
qty 數量, qty*unit_price as 金額
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

select emp_no 編號,emp_name 姓名, 性別= case a.sex when 'm' then '男'
when 'f' then '女'
else '未'
end,
prod_name 產品名稱,銷售日期= isnull(convert(char(10),c.order_date,120),'日期不詳'),
qty 數量, qty*unit_price as 金額
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

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

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

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 )

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='世界技術開發公司' 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)
)

select emp_no,emp_name,dept,salary
from employee
where emp_name like '劉%'

select cust_id
from sales
where tot_amt>2000

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

select avg(salary) avg_sal,dept
from employee
where addr like '上海市%'
group by dept

update employee
set addr like '北京市'
where addr like '上海市'

select emp_no,emp_name,dept
from employee
where sex='F'and dept in ('業務','會計')

select prod_id ,sum(qty*unit_price)
from sale_item
group by prod_id
order by sum(qty*unit_price) desc

select CUST_ID,cust_name,addr
from customer
where cust_id between 'C0001' AND 'C0004'

select count(distinct prod_id) as '共銷售產品數'
from sale_item

update employee
set salary=salary*1.03
where dept='業務'

select *
from employee
where salary=
(select min(salary )
from employee )

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 '客戶丙'

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

select avg(unit_price)
from sale_item
where prod_id='P0001'

select sale_id,tot_amt
from sales
where sale_id in
(select sale_id from employee
where sex='F')

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

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)