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CREATE DATABASE CUS
create table Customer(
	cusID int identity (1,1) primary key,
	name varchar (50) not null,
	Age int not null check (Age>=18),
	Adress varchar (200) null,
	salary decimal (18,2) null
)
Insert into Customer(name,Age,Adress,salary)
values  ('Nahid', 21, 'Gulshan', 2000.00),
		('Jahid', 22, 'Mirpur', 2000.00),
		('Tonmoy', 21, 'Banani', 2000.00),
		('Jui', 20, 'Footpath', 2000.00),
		('Jannat', 24, 'Lalbagh', 2000.00),
		('Rudra', 27, 'Dhanmondi', 2000.00);
create table orders(
OrderId int identity (11,1) primary key,
CustomerID int not null foreign key references Customer(cusID),
Date date null,
Amount money null

)
insert into orders(CustomerID,Date,Amount)
values  (1,'2021-02-11',2000),
		(1,'2021-03-11',2000),
		(1,'2021-04-11',2000),
		(1,'2021-05-11',2000)
select * from orders

select * from Customer where cusID in (select cusID from Customer where salary>4500)

select CustomerID from orders where Amount>1200

select name, Adress from Customer where cusID in (select CustomerID from orders where Amount >1200)

select Customer.name,Customer.Adress from Customer inner join orders on Customer.cusID= orders.CustomerID and Amount>1200;