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Snack-Sized Data Basics
SQL - Quick Setup Steps
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Head over to sqliteonline.com
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Select PostgreSQL from the left menu
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click Click to connect

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Create a table​​
CREATE TABLE students (
student_id SERIAL PRIMARY KEY,
first_name VARCHAR(50) NOT NULL,
last_name VARCHAR(50) NOT NULL,
date_of_birth DATE NOT NULL,
allergies VARCHAR(100) DEFAULT 'None',
absences INTEGER
);
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Add some data
INSERT INTO students (first_name, last_name, date_of_birth, allergies, absences)
VALUES
('Alice', 'Johnson', '2015-04-15', 'None', 3),
('David', 'Lee', '2014-01-30', 'Peanut', 0),
('Eva', 'Martinez', '2014-12-05', 'None', 2),
('Liam', 'Nguyen', '2015-07-22', 'None', 1),
('Sofia', 'Chen', '2013-09-10', 'Lactose', 4),
('Noah', 'Williams', '2014-03-18', 'Strawberry', 3),
('Mia', 'Robinson', '2015-11-02', 'None', 2),
('Lucas', 'Brown', '2013-06-27', 'Dairy', 0),
('Isabella', 'Garcia', '2014-08-14', 'None', 1),
('Ethan', 'Harris', '2015-01-08', 'Berry Leaf', 5),
('Ava', 'Lopez', '2013-05-19', 'None', 2),
('Benjamin', 'Davis', '2014-11-11', 'Hazelnut', 1),
('Charlotte', 'Miller', '2015-02-23', 'None', 3),
('James', 'Wilson', '2013-10-03', 'None', 0),
('Amelia', 'Moore', '2014-07-01', 'Pistachio', 4),
('Henry', 'Clark', '2014-04-09', 'Egg', 2),
('Grace', 'Hall', '2013-12-22', 'None', 1),
('Logan', 'Allen', '2015-06-11', 'Peanut', 3),
('Chloe', 'Young', '2014-09-30', 'None', 2),
('Jackson', 'King', '2013-11-17', 'Berry Leaf', 0),
('Emily', 'Scott', '2015-03-25', 'Soy', 1),
('Aiden', 'Green', '2014-10-12', 'None', 2),
('Ella', 'Adams', '2013-08-07', 'Strawberry', 4),
('Matthew', 'Baker', '2015-09-14', 'Blackberry', 1),
('Harper', 'Nelson', '2014-06-02', 'None', 2),
('Daniel', 'Carter', '2013-04-15', 'Tree nut', 3),
('Abigail', 'Mitchell', '2015-05-27', 'None', 1),
('Joseph', 'Perez', '2014-02-19', 'Wheat', 0),
('Lily', 'Roberts', '2013-07-21', 'Nutmeg', 3),
('Samuel', 'Turner', '2015-08-30', 'None', 2),
('Aria', 'Phillips', '2014-12-01', 'Cashew', 4),
('Owen', 'Campbell', '2013-03-11', 'Egg', 1),
('Zoe', 'Parker', '2015-01-20', 'None', 0),
('Wyatt', 'Evans', '2014-05-04', 'Gluten', 2),
('Natalie', 'Edwards', '2013-11-26', 'Tree nut', 1),
('Jack', 'Collins', '2015-06-06', 'None', 3),
('Hannah', 'Stewart', '2014-09-15', 'Wheat', 2),
('Elijah', 'Sanchez', '2013-10-28', 'None', 0),
('Victoria', 'Morris', '2015-02-14', 'None', 1),
('Sebastian', 'Rogers', '2014-08-03', 'Raspberry', 4),
('Leah', 'Reed', '2013-12-10', 'Soy', 3),
('Jayden', 'Cook', '2014-07-19', 'None', 2),
('Nora', 'Morgan', '2015-10-05', 'Tree nut', 1),
('Gabriel', 'Bell', '2013-06-15', 'None', 0),
('Scarlett', 'Murphy', '2014-11-23', 'Lactose', 3),
('Carter', 'Bailey', '2015-03-03', 'None', 2),
('Ellie', 'Rivera', '2013-08-18', 'Berry Leaf', 1),
('Julian', 'Cooper', '2014-09-07', 'Walnut', 4),
('Layla', 'Richardson', '2015-12-29', 'Peanut', 2),
('Isaac', 'Cox', '2013-05-02', 'None', 3);