43 lines
1.5 KiB
SQL
43 lines
1.5 KiB
SQL
SELECT 'CREATE DATABASE main'
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WHERE NOT EXISTS (SELECT FROM pg_database WHERE datname = 'main')\gexec
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CREATE TABLE Persons (
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PersonID SERIAL PRIMARY KEY,
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LastName varchar(255),
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FirstName varchar(255),
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Address varchar(255),
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City varchar(255) DEFAULT 'Belfast'
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);
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CREATE TABLE Tasks (
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TaskID SERIAL PRIMARY KEY,
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PersonID INT,
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TaskName varchar(255),
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CONSTRAINT fkPersons
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FOREIGN KEY(PersonID)
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REFERENCES Persons(PersonID)
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);
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CREATE TABLE Products (
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ProductID SERIAL PRIMARY KEY,
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ProductName varchar(255)
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);
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CREATE TABLE Products_Tasks (
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ProductID INT NOT NULL,
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TaskID INT NOT NULL,
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CONSTRAINT fkProducts
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FOREIGN KEY(ProductID)
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REFERENCES Products(ProductID),
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CONSTRAINT fkTasks
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FOREIGN KEY(TaskID)
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REFERENCES Tasks(TaskID),
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PRIMARY KEY (ProductID, TaskID)
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);
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INSERT INTO Persons (FirstName, LastName, Address, City) VALUES ('Mike', 'Hughes', '123 Fake Street', 'Belfast');
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INSERT INTO Tasks (PersonID, TaskName) VALUES (1, 'assembling');
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INSERT INTO Tasks (PersonID, TaskName) VALUES (1, 'processing');
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INSERT INTO Products (ProductName) VALUES ('Computers');
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INSERT INTO Products (ProductName) VALUES ('Laptops');
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INSERT INTO Products (ProductName) VALUES ('Chairs');
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INSERT INTO Products_Tasks (ProductID, TaskID) VALUES (1, 1);
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INSERT INTO Products_Tasks (ProductID, TaskID) VALUES (2, 1);
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INSERT INTO Products_Tasks (ProductID, TaskID) VALUES (3, 1);
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INSERT INTO Products_Tasks (ProductID, TaskID) VALUES (1, 2);
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