1、由sales表中查找出訂單金額大於"E0013業務員在1996/10/15這天所接每一張訂單的金額"的所有訂單
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
2、計算'P0001'產品的平均銷售單價
select avg(unit_price)
from sale_item
where prod_id='P0001'
3、找出公司女員工所接的定單
select sale_id,tot_amt
from sales
where sale_id in
(select sale_id from employee
where sex='F')
4、找出同一天進入公司服務的員工
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
5、找出目前業績超過232000元的員工編號和姓名
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)
6、查詢出employee表中所有女職工的平均工資和住址在"上海市"的所有女職工的平均工資
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%'
7、在employee表中查詢薪水超過員工平均薪水的員工信息
Select *
from employee
where salary>( select avg(salary)
from employee)
8、 找出目前銷售業績超過10000元的業務員編號及銷售業績，並按銷售業績從大到小排序
Select sale_id ,sum(tot_amt)
from sales
group by sale_id
having sum(tot_amt)>10000
order by sum(tot_amt) desc
9、 找出公司男業務員所接且訂單金額超過2000元的訂單號及訂單金額
Select order_no,tot_amt
From sales ,employee
Where sale_id=emp_no and sex='M' and tot_amt>2000
10、 查詢sales表中訂單金額最高的訂單號及訂單金額
Select order_no,tot_amt from sales
where tot_amt=(select max(tot_amt) from sales)
11、 查詢在每張訂單中訂購金額超過4000元的客戶名及其地址
Select cust_name,addr from customer a,sales b
where a.cust_id=b.cust_id and tot_amt>4000
12、 求出每位客戶的總訂購金額，顯示出客戶號及總訂購金額，並按總訂購金額降序排列
Select cust_id,sum(tot_amt) from sales
Group by cust_id
Order by sum(tot_amt) desc
