[lab-mysql] Aris Goulas

your-code/create.sql

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+/*Create the (empty) mySQL database*/
+SELECT CURRENT_USER();
+
+CREATE DATABASE IF NOT EXISTS lab_mysql;
+
+/*Define the database that will be used in the queries*/
+USE lab_mysql;
+
+/*Populate the database with tables*/
+CREATE TABLE IF NOT EXISTS Cars(
+								ID INT PRIMARY KEY AUTO_INCREMENT, 
+								VIN VARCHAR(17) NOT NULL,
+								Manufacturer VARCHAR(40) NOT NULL,
+								Model VARCHAR(40),
+								`Year` YEAR,
+								Color VARCHAR(30)
+                                );
+
+SELECT * FROM Cars;
+
+
+CREATE TABLE IF NOT EXISTS Customers(
+									 ID INT PRIMARY KEY AUTO_INCREMENT,
+									 `Customer ID` INT NOT NULL,
+									 `Name` VARCHAR(100) NOT NULL,
+									 Phone VARCHAR(20),
+									 Email VARCHAR(50),
+									 Address VARCHAR(100) NOT NULL,
+									 City VARCHAR(50) NOT NULL,
+									 `State/Province` VARCHAR(50),
+									 Country VARCHAR(50) NOT NULL,
+									 Postal VARCHAR(10)
+                                     );
+
+SELECT * FROM Customers;
+
+
+CREATE TABLE IF NOT EXISTS Salespersons(
+										ID INT PRIMARY KEY AUTO_INCREMENT,
+										`Staff ID` VARCHAR(5) NOT NULL,
+										`Name` VARCHAR(100),
+										Store VARCHAR(50)
+                                        );
+
+SELECT * FROM Salespersons;
+
+
+CREATE TABLE IF NOT EXISTS Invoices(
+									ID INT PRIMARY KEY AUTO_INCREMENT,
+									`Invoice Number` INT NOT NULL,
+									`Date` DATE NOT NULL,
+									Car INT,
+									Customer INT,
+									`Sales Person` INT,
+                                    FOREIGN KEY (Car) REFERENCES Cars(ID),
+                                    FOREIGN KEY (Customer) REFERENCES Customers(ID),
+                                    FOREIGN KEY (`Sales Person`) REFERENCES Salespersons(ID)
+                                    );
+
+SELECT * FROM Invoices;

your-code/delete.sql

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+USE lab_mysql;
+
+/*To find duplicate entries*/
+
+SELECT VIN, COUNT(*) as count
+FROM Cars
+GROUP BY VIN
+HAVING count > 1;
+
+
+/*Delete*/
+SET SQL_SAFE_UPDATES = 0;
+
+SELECT * FROM Cars;
+
+DELETE FROM Cars
+WHERE (ID = 4);
+
+SET SQL_SAFE_UPDATES = 1;

your-code/seeding.sql

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+/*In order to start the auto-increment attribute in mySQL starting from 0 instead of (default) 1*/
+SET sql_mode = "NO_AUTO_VALUE_ON_ZERO";
+
+USE lab_mysql;
+
+INSERT INTO Cars
+VALUES 
+(0, '3K096I98581DHSNUP', 'Volkswagen', 'Tiguan', 2019, 'Blue'),
+(1, 'ZM8G7BEUQZ97IH46V', 'Peugeot',	'Rifter', 2019,	'Red'),
+(2, 'RKXVNNIHLVVZOUB4M', 'Ford', 'Fusion', 2018, 'White'),
+(3, 'HKNDGS7CU31E9Z7JW', 'Toyota', 'RAV4', 2018, 'Silver'),
+(4, 'DAM41UDN3CHU2WVF6', 'Volvo', 'V60', 2019, 'Gray'),
+(5, 'DAM41UDN3CHU2WVF6', 'Volvo', 'V60 Cross Country', 2019, 'Gray');
+
+SELECT * FROM Cars;
+
+
+INSERT INTO Customers
+VALUES 
+(0,	10001, 'Pablo Picasso', '+34 636 17 63 82', '-', 'Paseo de la Chopera, 14',	'Madrid', 'Madrid',	'Spain', '28045'),
+(1,	20001, 'Abraham Lincoln', '+1 305 907 7086', '-', '120 SW 8th St', 'Miami',	'Florida', 'United States',	'33130'),
+(2,	30001, 'Napoléon Bonaparte', '+33 1 79 75 40 00', '-', '40 Rue du Colisée',	'Paris', 'Île-de-France', 'France',	'75008');
+
+SELECT * FROM Customers;
+
+
+INSERT INTO Salespersons
+VALUES 
+(0,	'00001', 'Petey Cruiser', 'Madrid'),
+(1,	'00002', 'Anna Sthesia', 'Barcelona'),
+(2,	'00003', 'Paul Molive', 'Berlin'),
+(3,	'00004', 'Gail Forcewind', 'Paris'),
+(4,	'00005', 'Paige Turner', 'Mimia'),
+(5,	'00006', 'Bob Frapples', 'Mexico City'),
+(6,	'00007', 'Walter Melon', 'Amsterdam'),
+(7,	'00008', 'Shonda Leer', 'São Paulo');
+
+SELECT * FROM Salespersons;
+
+
+INSERT INTO Invoices
+VALUES
+(0,	'852399038', STR_TO_DATE('22-08-2018', '%d-%m-%Y'), 0, 1, 3),
+(1,	'731166526', STR_TO_DATE('31-12-2018', '%d-%m-%Y'), 3, 0, 5),
+(2,	'271135104', STR_TO_DATE('22-01-2019', '%d-%m-%Y'), 2, 2, 7);
+
+SELECT * FROM Invoices;

your-code/update.sql

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+USE lab_mysql;
+
+/*Deactivate safe updates on mySQL*/
+SET SQL_SAFE_UPDATES = 0;
+
+/*Update*/
+SELECT * FROM Salespersons;
+
+UPDATE Salespersons
+SET store = 'Miami'
+WHERE (ID = 4);
+
+SELECT * FROM Customers;
+
+UPDATE Customers
+SET Email = 'ppicasso@gmail.com'
+WHERE (ID = 0);
+
+UPDATE Customers
+SET Email = 'lincoln@us.gov'
+WHERE (ID = 1);
+
+UPDATE Customers
+SET Email = 'hello@napoleon.me'
+WHERE (ID = 2);
+
+
+/*Activate safe updates on mySQL*/
+SET SQL_SAFE_UPDATES = 1;