CREATE TABLE location (
    location_id INTEGER PRIMARY KEY,
    city VARCHAR(50),
    state_province VARCHAR(30),
    postal_code VARCHAR(5),
    country VARCHAR(20)
);

CREATE TABLE supplier (
    supplier_id INTEGER PRIMARY KEY,
    city VARCHAR(50),
    state_province VARCHAR(30),
    postal_code VARCHAR(5),
    country VARCHAR(20),
    name VARCHAR(50)
);

CREATE TABLE vehicle (
    vehicle_id INTEGER PRIMARY KEY,
    vehicle_name VARCHAR(10),
    vin VARCHAR(50),
    make VARCHAR(50),
    model VARCHAR(50),
    year INTEGER
);

CREATE TABLE vehicle_part (
    vehicle_part_id INTEGER PRIMARY KEY,
    rfid VARCHAR(255),
    purchase_price DECIMAL(25,5),
    sold_price DECIMAL(25,5),
    vehicle_id INTEGER,
    make VARCHAR(50),
    model VARCHAR(50),
    year INTEGER,
    part_name VARCHAR(50),
    FOREIGN KEY (vehicle_id) REFERENCES vehicle(vehicle_id)
);

CREATE TABLE vehicle_part_location (
    vehicle_part_location_id INTEGER PRIMARY KEY,
    location_id INTEGER,
    vehicle_part_id INTEGER,
    arrived_timestamp TIMESTAMP,
    left_timestamp TIMESTAMP,
    FOREIGN KEY (location_id) REFERENCES location(location_id),
    FOREIGN KEY (vehicle_part_id) REFERENCES vehicle_part(vehicle_part_id)
);

CREATE TABLE vehicle_part_supplier (
    supplier_id INTEGER,
    vehicle_part_id INTEGER,
    PRIMARY KEY (supplier_id, vehicle_part_id),
    FOREIGN KEY (supplier_id) REFERENCES supplier(supplier_id),
    FOREIGN KEY (vehicle_part_id) REFERENCES vehicle_part(vehicle_part_id)
);

-- Insert corrected sample data into 'location'
INSERT INTO location (location_id, city, state_province, postal_code, country) VALUES
(1, 'Edinburgh', 'Scotland', 'EH11B', 'UK'),
(2, 'Glasgow', 'Scotland', 'G11XW', 'UK');

-- Insert corrected sample data into 'supplier'
INSERT INTO supplier (supplier_id, city, state_province, postal_code, country, name) VALUES
(1, 'Birmingham', 'England', 'B11TT', 'UK', 'AutoParts Ltd'),
(2, 'Leeds', 'England', 'LS11B', 'UK', 'CarParts Co');
-- Insert sample data into 'vehicle'
INSERT INTO vehicle (vehicle_id, vehicle_name, vin, make, model, year) VALUES
(1, 'EcoCar', '1HGCM82633A004352', 'Toyota', 'Prius', 2020),
(2, 'FamilyCar', '1HGCM82633A004353', 'Honda', 'Civic', 2021);

-- Insert sample data into 'vehicle_part'
INSERT INTO vehicle_part (vehicle_part_id, rfid, purchase_price, sold_price, vehicle_id, make, model, year, part_name) VALUES
(1, 'RFID123456', 100.00, 150.00, 1, 'Toyota', 'Prius', 2020, 'Battery'),
(2, 'RFID123457', 50.00, 75.00, 2, 'Honda', 'Civic', 2021, 'Air Filter');

-- Insert sample data into 'vehicle_part_location'
INSERT INTO vehicle_part_location (vehicle_part_location_id, location_id, vehicle_part_id, arrived_timestamp, left_timestamp) VALUES
(1, 1, 1, '2024-01-01 10:00:00', NULL),
(2, 2, 2, '2024-01-02 10:00:00', '2024-01-03 15:00:00');

-- Insert sample data into 'vehicle_part_supplier'
INSERT INTO vehicle_part_supplier (supplier_id, vehicle_part_id) VALUES
(1, 1),
(2, 2);

SELECT vp.part_name, l.city, l.state_province
FROM vehicle_part vp
JOIN vehicle_part_location vpl ON vp.vehicle_part_id = vpl.vehicle_part_id
JOIN location l ON vpl.location_id = l.location_id;


SELECT YEAR(vp.year) AS year, SUM(vp.sold_price) AS total_sales
FROM vehicle_part vp
GROUP BY YEAR(vp.year);

SELECT vp.part_name, l.city
FROM vehicle_part vp
JOIN vehicle_part_location vpl ON vp.vehicle_part_id = vpl.vehicle_part_id
JOIN location l ON vpl.location_id = l.location_id
WHERE vpl.left_timestamp IS NULL;


SELECT s.name, s.city, vp.part_name
FROM supplier s
JOIN vehicle_part_supplier vps ON s.supplier_id = vps.supplier_id
JOIN vehicle_part vp ON vps.vehicle_part_id = vp.vehicle_part_id
WHERE vp.part_name = 'Battery';

SELECT s.name, s.city, vp.part_name
FROM supplier s
JOIN vehicle_part_supplier vps ON s.supplier_id = vps.supplier_id
JOIN vehicle_part vp ON vps.vehicle_part_id = vp.vehicle_part_id
WHERE vp.part_name = 'Battery';

SELECT vp.part_name, COUNT(*) AS total_parts, SUM(vp.purchase_price) AS total_cost
FROM vehicle_part vp
GROUP BY vp.part_name;

MySQL online editor

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About MySQL

MySQL is a open-source, free and very popular relational database management system which is developed, distributed and supported by Oracle corporation.

Key Features:

  • Open-source relational database management systems.
  • Reliable, very fast and easy to use database server.
  • Works on client-server model.
  • Highly Secure and Scalable
  • High Performance
  • High productivity as it uses stored procedures, triggers, views to write a highly productive code.
  • Supports large databases efficiently.
  • Supports many operating systems like Linux*,CentOS*, Solaris*,Ubuntu*,Windows*, MacOS*,FreeBSD* and others.

Syntax help

Commands

1. CREATE

CREATE TABLE table_name (
                column1 datatype,
                column2 datatype,
                ....);

Example

CREATE TABLE EMPLOYEE (
  empId INTEGER PRIMARY KEY,
  name TEXT NOT NULL,
  dept TEXT NOT NULL
);

2. ALTER

ALTER TABLE Table_name ADD column_name datatype;

Example

INSERT INTO EMPLOYEE VALUES (0001, 'Dave', 'Sales');

3. TRUNCATE

TRUNCATE table table_name;

4. DROP

DROP TABLE table_name;

5. RENAME

RENAME TABLE table_name1 to new_table_name1;

6. COMMENT

Single-Line Comments:

 --Line1;

Multi-Line comments:

   /* Line1,
   Line2 */

DML Commands

1. INSERT

INSERT INTO table_name (column1, column2, column3, ...) VALUES (value1, value2, value3, ...);

Note: Column names are optional.

Example

INSERT INTO EMPLOYEE VALUES (0001, 'Ava', 'Sales');

2. SELECT

SELECT column1, column2, ...
FROM table_name
[where condition];

Example

SELECT * FROM EMPLOYEE where dept ='sales';

3. UPDATE

UPDATE table_name
SET column1 = value1, column2 = value2, ...
WHERE condition;

Example

UPDATE EMPLOYEE SET dept = 'Sales' WHERE empId='0001';

4. DELETE

DELETE FROM table_name where condition;

Example

DELETE from EMPLOYEE where empId='0001';

Indexes

1. CREATE INDEX

  CREATE INDEX index_name on table_name(column_name);
  • To Create Unique index:
  CREATE UNIQUE INDEX index_name on table_name(column_name);

2. DROP INDEX

DROP INDEX index_name ON table_name;

Views

1. Create a View

Creating a View:
CREATE VIEW View_name AS 
Query;

2. How to call view

SELECT * FROM View_name;

3. Altering a View

ALTER View View_name AS 
Query;

4. Deleting a View

DROP VIEW View_name;

Triggers

1. Create a Trigger

CREATE TRIGGER trigger_name trigger_time trigger_event
    ON tbl_name FOR EACH ROW [trigger_order] trigger_body
/* where
trigger_time: { BEFORE | AFTER }
trigger_event: { INSERT | UPDATE | DELETE }
trigger_order: { FOLLOWS | PRECEDES } */

2. Drop a Trigger

DROP TRIGGER [IF EXISTS] trigger_name;

Stored Procedures

1. Create a Stored Procedure

CREATE PROCEDURE sp_name(p1 datatype)
BEGIN
/*Stored procedure code*/
END;

2. How to call Stored procedure

CALL sp_name;

3. How to delete stored procedure

DROP PROCEDURE sp_name;

Joins

1. INNER JOIN

SELECT * FROM TABLE1 INNER JOIN TABLE2 where condition;

2. LEFT JOIN

SELECT * FROM TABLE1 LEFT JOIN TABLE2 ON condition;

3. RIGHT JOIN

SELECT * FROM TABLE1 RIGHT JOIN TABLE2 ON condition;

4. CROSS JOIN

SELECT select_list from TABLE1 CROSS JOIN TABLE2;