School Commit Init

2024-08-31 12:07:21 +03:00
commit 0b130ee18c
2801 changed files with 4720552 additions and 0 deletions
@@ -0,0 +1,144 @@
+--- 1.
+CREATE DATABASE Airbnb
+
+CREATE TABLE Customers(
+	id int primary key,
+	username VARCHAR(100),
+	nationality VARCHAR(100),
+	dateofbirth DATE,
+)
+ALTER TABLE Customers
+ADD UNIQUE (username);
+
+CREATE TABLE Emails(
+	id int primary key,
+	email VARCHAR(256),
+	userid int FOREIGN key  REFERENCES Customers(id)
+)
+
+CREATE TABLE Properties(
+	id int primary key,
+	name varchar(100),
+	decription varchar(100),
+	checkin Time,
+	checkout Time,
+	numberofpeople int,
+	price decimal(18,2),
+	freecancellation bit
+)
+
+CREATE TABLE Bookings(
+	id int primary key,
+	client int FOREIGN key  REFERENCES Customers(id),
+	property int FOREIGN key  REFERENCES Properties(id),
+	startdate DATE,
+	enddate DATE,
+)
+
+CREATE TABLE Payments(
+	id int primary key,
+	amount decimal(18,2),
+	dateofpayment DATETIME,
+	typeofpayment VARCHAR(100),
+	booking int FOREIGN key  REFERENCES Bookings(id)
+)
+
+--- 2.
+GO
+
+CREATE OR ALTER PROCEDURE addPayment @amount int, @typeofpay VARCHAR(100), @booking int
+AS
+BEGIN
+	IF NOT EXISTS(SELECT 1 FROM Bookings where id=@booking)
+	begin
+		RAISERROR('Invalid Booking',17,1);
+	end
+	DECLARE @TOTAL DECIMAL(18,2);
+	SET @TOTAL=(SELECT SUM(amount) FROM Payments p WHERE p.booking= @booking);
+	DECLARE @Totaltopay DECIMAL(18,2)
+	SET @Totaltopay= (SELECT price*DATEDIFF(DAY,b.startdate,b.enddate) FROM Properties p join Bookings b on p.id=b.property WHERE b.id=@booking)
+	IF @TOTAL < @Totaltopay
+	BEGIN
+		INSERT INTO Payments (id, amount, dateofpayment, typeofpayment, booking)
+		VALUES
+		(
+			(SELECT MAX(id)+1 FROM Payments),
+			@amount,
+			GETDATE(),
+			@typeofpay,
+			@booking
+		)
+	END
+END
+
+--- 3.
+GO
+
+CREATE VIEW maxBookers
+AS
+SELECT username FROM Customers c join Bookings b on c.id=b.client
+GROUP BY username
+HAVING COUNT(b.id) = (SELECT TOP 1 COUNT(b.id) FROM Customers c join Bookings b on c.id=b.client
+GROUP BY username ORDER BY COUNT(b.id) DESC) 
+
+GO
+--- 4.
+
+CREATE OR ALTER FUNCTION lessThanR (@r int)
+RETURNS int AS
+BEGIN
+	DECLARE @res int;
+	SET @res = (SELECT COUNT(*) FROM Customers c Join Bookings b on c.id=b.client JOIN Payments p ON p.booking=b.id 
+	WHERE EXISTS(SELECT * FROM Bookings b2 INNER JOIN Payments p2 on p2.booking=b2.id WHERE p2.typeofpayment='PayPal' and b2.id=b.id)
+	GROUP BY c.username HAVING COUNT(b.id)<@r);
+	IF ISNULL(@res, 0)=0
+	BEGIN
+		return 0
+	END
+	RETURN @res
+END
+
+GO
+--- inserts
+
+INSERT INTO Customers (id,
+	username ,
+	nationality ,
+	dateofbirth)
+VALUES 
+(1,'Andrei','Romania', '2001-01-01'),
+(2,'Mircea','Grecia', '2002-02-02'),
+(3,'Vlad','Danemarca', '2003-03-03')
+
+INSERT INTO Emails (id, email, userid)
+VALUES
+(1,'andrei@yahoo.com',1),
+(2,'andrei2@yahoo.com',1),
+(3,'mircea@yahoo.com',2),
+(4,'vlad@yahoo.com',3)
+
+
+INSERT INTO Properties (
+id,
+	name ,
+	decription ,
+	checkin,
+	checkout,
+	numberofpeople,
+	price,
+	freecancellation
+)
+VALUES
+(1,'Pensiune','Descrierre','10:30:00', '09:00:00', 10, 400.50, 1),
+(2,'Hotel','Descrierre','10:30:00', '09:00:00', 5, 1000.50, 0)
+
+
+INSERT INTO Bookings (id, client, property, startdate, enddate)
+VALUES
+(1,1,1,'2023-11-11','2023-11-12'),
+(2,3,2,'2023-10-10','2023-10-12')
+
+
+DECLARE @ret int
+EXEC @ret = lessThanR @r=100
+SELECT @ret