[4sem] add db final lab

4sem/db/final.sql

@@ -0,0 +1,348 @@
+use bus_routes;
+
+-- Создадим таблицы
+
+CREATE TABLE bus_routes.dbo.busses (
+	ID int IDENTITY(0,1) NOT NULL,
+	title nvarchar(100) COLLATE SQL_Latin1_General_CP1_CI_AS NOT NULL,
+	sits int NOT NULL,
+	CONSTRAINT busses_PK PRIMARY KEY (ID)
+);
+
+CREATE TABLE bus_routes.dbo.cities (
+	ID int IDENTITY(0,1) NOT NULL,
+	title nvarchar(100) COLLATE SQL_Latin1_General_CP1_CI_AS NOT NULL,
+	CONSTRAINT cities_PK PRIMARY KEY (ID)
+);
+
+CREATE TABLE bus_routes.dbo.passengers (
+	ID int IDENTITY(0,1) NOT NULL,
+	second_name nvarchar(40) COLLATE SQL_Latin1_General_CP1_CI_AS NOT NULL,
+	first_name nvarchar(40) COLLATE SQL_Latin1_General_CP1_CI_AS NOT NULL,
+	patronymic nvarchar(40) COLLATE SQL_Latin1_General_CP1_CI_AS NOT NULL,
+	CONSTRAINT passengers_PK PRIMARY KEY (ID)
+);
+
+CREATE TABLE bus_routes.dbo.cashbox (
+	ID int IDENTITY(0,1) NOT NULL,
+	city_id int NOT NULL,
+	CONSTRAINT cash_box_PK PRIMARY KEY (ID),
+	CONSTRAINT cash_box_FK FOREIGN KEY (city_id) REFERENCES bus_routes.dbo.cities(ID)
+);
+
+CREATE TABLE bus_routes.dbo.driver (
+	ID int IDENTITY(0,1) NOT NULL,
+	second_name nvarchar(40) COLLATE SQL_Latin1_General_CP1_CI_AS NOT NULL,
+	first_name nvarchar(40) COLLATE SQL_Latin1_General_CP1_CI_AS NOT NULL,
+	patronymic nvarchar(40) COLLATE SQL_Latin1_General_CP1_CI_AS NOT NULL,
+	home_city int NOT NULL,
+	CONSTRAINT driver_PK PRIMARY KEY (ID),
+	CONSTRAINT driver_FK_1 FOREIGN KEY (home_city) REFERENCES bus_routes.dbo.cities(ID)
+);
+
+CREATE TABLE bus_routes.dbo.passages (
+	ID int IDENTITY(0,1) NOT NULL,
+	city_from int NOT NULL,
+	city_to int NOT NULL,
+	price int NOT NULL,
+	passage_time time(7) NOT NULL,
+	CONSTRAINT passages_PK PRIMARY KEY (ID),
+	CONSTRAINT passages_FK FOREIGN KEY (city_from) REFERENCES bus_routes.dbo.cities(ID),
+	CONSTRAINT passages_FK_1 FOREIGN KEY (city_to) REFERENCES bus_routes.dbo.cities(ID)
+);
+
+CREATE TABLE bus_routes.dbo.runs (
+	ID int IDENTITY(0,1) NOT NULL,
+	bus_id int NOT NULL,
+	driver_id int NOT NULL,
+	passage_id int NOT NULL,
+	passage_date datetime NOT NULL,
+	CONSTRAINT runs_PK PRIMARY KEY (ID),
+	CONSTRAINT runs_FK FOREIGN KEY (bus_id) REFERENCES bus_routes.dbo.busses(ID) ON UPDATE CASCADE,
+	CONSTRAINT runs_FK_1 FOREIGN KEY (driver_id) REFERENCES bus_routes.dbo.driver(ID),
+	CONSTRAINT runs_FK_2 FOREIGN KEY (passage_id) REFERENCES bus_routes.dbo.passages(ID)
+);
+
+CREATE TABLE bus_routes.dbo.tickets (
+	ID int IDENTITY(0,1) NOT NULL,
+	run_id int NOT NULL,
+	passenger_id int NOT NULL,
+	cashbox_id int NOT NULL,
+	sold_dt datetime DEFAULT getdate() NOT NULL,
+	CONSTRAINT tickets_PK PRIMARY KEY (ID),
+	CONSTRAINT tickets_FK FOREIGN KEY (run_id) REFERENCES bus_routes.dbo.runs(ID),
+	CONSTRAINT tickets_FK_1 FOREIGN KEY (passenger_id) REFERENCES bus_routes.dbo.passengers(ID),
+	CONSTRAINT tickets_FK_2 FOREIGN KEY (cashbox_id) REFERENCES bus_routes.dbo.cashbox(ID)
+);
+
+-- Создадим нужные функции
+
+CREATE OR ALTER PROCEDURE dbo.SetRunDriver(@driverID INT, @runID INT) AS BEGIN
+	DECLARE @driverCity INT = (SELECT TOP 1 home_city FROM driver WHERE ID = @driverID); 
+	DECLARE @runCity INT = (SELECT TOP 1 home_city FROM driver WHERE ID = @driverID); 
+	IF @driverCity = @runCity BEGIN
+		UPDATE runs 
+		SET runs.driver_id = @driverID
+		WHERE runs.ID = @runID;
+	END
+	ELSE 
+		RAISERROR ('Driver cannot drive from this city', 16, 1);
+END
+
+CREATE OR ALTER PROCEDURE dbo.BuyTicket(@runID INT, @passengerID INT, @cashboxID INT) AS BEGIN 
+	DECLARE @sitsTaken INT = (SELECT COUNT(*) FROM tickets WHERE tickets.run_id = @runID);
+	DECLARE @busSits INT = (SELECT B.sits 
+							FROM runs 
+								INNER JOIN busses AS B ON B.ID = runs.bus_id
+							WHERE runs.ID = @runID);
+	
+	IF @sitsTaken < @busSits BEGIN
+		INSERT INTO tickets(run_id,passenger_id,cashbox_id) VALUES (@runID, @passengerID, @cashboxID);
+	END
+	ELSE
+		RAISERROR ('No free sits!', 16, 1);
+END
+
+CREATE OR ALTER PROCEDURE dbo.ReturnTicket(@runID INT, @passengerID INT, @ticketID INT) AS BEGIN 
+	DELETE FROM tickets
+	WHERE run_id = @runID AND passenger_id = @passengerID AND ID = @ticketID;
+
+	IF (SELECT @@ROWCOUNT) = 0 BEGIN
+		RAISERROR ('Ticket not found!', 16, 1);
+	END
+END
+
+CREATE OR ALTER PROCEDURE dbo.SetRunBus(@runID INT, @busId INT) AS BEGIN 
+	DECLARE @sitsTaken INT = (SELECT COUNT(*) FROM tickets WHERE tickets.run_id = @runID);
+	DECLARE @newBusSits INT = (SELECT sits FROM busses WHERE busses.ID = @busId);
+
+	IF @newBusSits < @sitsTaken BEGIN
+		RAISERROR ('This bus couldn`t care all the passengers', 16, 1);
+	END
+	ELSE BEGIN
+		UPDATE runs 
+		SET runs.bus_id = @busId
+		WHERE runs.ID = @runID;
+	END
+END
+
+BEGIN TRANSACTION
+-- 1. Получить данные (время, цену на билет) о рейсах в город Томск из города Новосибирск.
+
+DECLARE @tomskID INT = (SELECT TOP 1 ID FROM cities WHERE title = 'Tomsk');
+DECLARE @novosibirskID INT = (SELECT TOP 1 ID FROM cities WHERE title = 'Novosibirsk');
+
+SELECT R.passage_date, 
+	   PSGS.price
+FROM runs as R 
+	JOIN passages as PSGS ON PSGS.ID = R.passage_id 
+	WHERE PSGS.city_from  = @novosibirskID and PSGS.city_to = @tomskID;
+
+COMMIT TRANSACTION
+
+
+BEGIN TRANSACTION
+-- 2. Получить суммарный доход какой-либо кассы.
+
+DECLARE @randomCashboxID INT = (SELECT TOP 1 ID FROM cashbox ORDER BY NEWID());
+
+SELECT @randomCashboxID AS cashbox_id,
+	   COALESCE(sum(P.price), 0) AS profit
+FROM tickets AS T
+	INNER JOIN runs AS R ON R.ID = T.run_id 
+	INNER JOIN passages AS P ON P.ID = R.passage_id 
+	WHERE T.cashbox_id = @randomCashboxID;
+
+COMMIT TRANSACTION
+
+
+BEGIN TRANSACTION
+-- 3. Получить суммарные доходы касс в городе Томске.
+
+SELECT T.cashbox_id AS cashbox_id,
+	   COALESCE(sum(P.price), 0) AS profit
+FROM tickets AS T
+	INNER JOIN cashbox AS C ON C.ID = T.cashbox_id 
+	INNER JOIN runs AS R ON R.ID = T.run_id 
+	INNER JOIN passages AS P ON P.ID = R.passage_id 
+	WHERE C.city_id = 0 -- Tomsk ID
+	GROUP BY T.cashbox_id;
+
+COMMIT TRANSACTION
+
+
+BEGIN TRANSACTION
+-- 4. Получить число рейсов, совершѐнных данным водителем за год.
+
+SELECT COUNT(D.ID)
+FROM runs AS R
+	INNER JOIN driver AS D ON D.ID = R.driver_id
+	WHERE DATEPART(YEAR, R.passage_date) = '2021' AND D.ID = 1;
+
+COMMIT TRANSACTION
+
+
+BEGIN TRANSACTION
+-- 5. Назначить водителя на рейс.
+
+-- not working
+EXECUTE dbo.SetRunDriver 5, 4; -- driverID, runID
+
+-- working
+EXECUTE dbo.SetRunDriver 4, 24;
+
+ROLLBACK TRANSACTION
+
+
+BEGIN TRANSACTION
+-- 6. Оформить билет для клиента в город Новосибирск из Томска, с учѐтом занятых мест в автобусе.
+
+EXECUTE dbo.BuyTicket 4,0,0
+
+COMMIT TRANSACTION
+
+
+BEGIN TRANSACTION
+-- 7. Получить число рейсов, совершѐнных автобусами «Икарус» и «ПАЗ».
+
+SELECT COUNT(*) AS IKARUS_ROUTES FROM tickets AS T
+	INNER JOIN runs AS R ON R.ID = T.run_id
+	INNER JOIN busses AS B ON B.ID = R.bus_id
+	WHERE B.title = 'Ikarus'
+
+SELECT COUNT(*) AS PAZ_ROUTES FROM tickets AS T
+	INNER JOIN runs AS R ON R.ID = T.run_id
+	INNER JOIN busses AS B ON B.ID = R.bus_id
+	WHERE B.title = 'PAZ'
+
+COMMIT TRANSACTION
+
+
+BEGIN TRANSACTION
+-- 8. Проверить все свободные места на рейс.
+
+	DECLARE @runID INT = 4;
+	SELECT 	((SELECT B.sits FROM runs INNER JOIN busses AS B ON B.ID = runs.bus_id WHERE runs.ID = @runID) -
+			 (SELECT COUNT(*) FROM tickets WHERE tickets.run_id = @runID)) AS FREE_SITS
+
+COMMIT TRANSACTION
+
+
+BEGIN TRANSACTION
+-- 9. Показать число билетов, проданных кассами.
+
+SELECT T.cashbox_id AS cashbox_id,
+	   COUNT(T.ID) AS TICKETS_SOLD
+FROM tickets AS T
+	INNER JOIN cashbox AS C ON C.ID = T.cashbox_id 
+	INNER JOIN runs AS R ON R.ID = T.run_id 
+	INNER JOIN passages AS P ON P.ID = R.passage_id
+	GROUP BY T.cashbox_id;
+
+COMMIT TRANSACTION
+
+
+BEGIN TRANSACTION
+-- 10. Показать среднюю цену билетов.
+
+SELECT AVG(CAST(P.price AS FLOAT))
+FROM runs AS R
+	INNER JOIN passages AS P ON P.ID = R.passage_id;
+
+COMMIT TRANSACTION
+
+
+BEGIN TRANSACTION
+-- 11. Показать рейсы, цена на которые выше средней цены на билеты.
+
+DECLARE @avgTicketPrice FLOAT = (SELECT AVG(CAST(P.price AS FLOAT)) FROM runs AS R INNER JOIN passages AS P ON P.ID = R.passage_id);
+SELECT *
+FROM passages AS P 
+WHERE P.price > @avgTicketPrice;
+
+COMMIT TRANSACTION
+
+
+BEGIN TRANSACTION
+-- 12. Отменить клиенту билет, после того как он его вернул.
+
+-- working
+EXECUTE dbo.ReturnTicket 4,0,53; -- run, passenger, ticket
+
+-- not working
+EXECUTE dbo.ReturnTicket 4,0,88;
+
+ROLLBACK TRANSACTION
+
+
+BEGIN TRANSACTION
+-- 13. Показать информацию о рейсах из города Томск (включая цену на билет, время рейса).
+
+SELECT  B.title,
+		D.second_name, D.first_name, D.patronymic,
+		C.title, R.passage_date 
+FROM runs AS R 
+	INNER JOIN passages AS P ON P.ID = R.passage_id 
+	INNER JOIN busses AS B ON B.ID = R.bus_id 
+	INNER JOIN driver AS D ON D.ID = R.driver_id
+	INNER JOIN cities AS C ON C.ID = P.city_to 
+WHERE P.city_from = 0 -- Tomsk ID
+
+COMMIT TRANSACTION
+
+
+BEGIN TRANSACTION
+-- 14. Посчитать количество билетов, проданных по рейсам Томск – Новосибирск за 2020-2021.
+
+SELECT COUNT(T.ID)
+FROM tickets AS T 
+	INNER JOIN runs AS R ON R.ID = T.run_id
+	INNER JOIN passages AS P ON P.ID = R.passage_id 
+WHERE DATEPART(YEAR, R.passage_date) BETWEEN '2019' AND '2020' AND P.city_from = 0 AND P.city_to = 1 -- Tomsk ID
+
+COMMIT TRANSACTION
+
+
+BEGIN TRANSACTION
+-- 15. Назначить автобус на рейс.
+
+-- working
+EXECUTE dbo.SetRunBus 11,1;
+
+-- not working
+EXECUTE dbo.SetRunBus 4,1
+
+
+COMMIT TRANSACTION
+
+
+BEGIN TRANSACTION
+-- 16. Получить список рейсов, на которые может быть назначен данный водитель и данный автобус с числом мест, равным 30.
+
+DECLARE @driverID INT = 1;
+DECLARE @busID INT = 0;
+
+DECLARE @driverCity INT = (SELECT home_city FROM driver WHERE driver.ID = @driverID);
+DECLARE @busSits INT = (SELECT sits FROM busses WHERE busses.ID = @busId);
+
+SELECT R.ID, P.city_from, COUNT(T.ID) AS SITS_TAKEN
+FROM runs AS R 
+	INNER JOIN busses AS B ON B.ID = R.bus_id 
+	RIGHT JOIN tickets AS T ON T.run_id = R.ID 
+	INNER JOIN passages AS P ON P.ID = R.passage_id 
+WHERE P.city_from = @driverCity
+GROUP BY R.ID, P.city_from
+HAVING COUNT(T.ID) <= @busSits;
+
+COMMIT TRANSACTION
+
+
+BEGIN TRANSACTION
+-- 17. После ремонта в автобусе добавили 3 места, добавить эти места и в БД.
+
+DECLARE @busID INT = 0; -- Ikarus ID
+UPDATE busses 
+SET busses.sits = busses.sits+3
+WHERE busses.ID = @busID;
+
+ROLLBACK TRANSACTION