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SQL Statements

Manipulating tables and data in a MySQL database is acheived with the language called SQL (Structered Query Language).

Tables

Tables can be created using the CREATE TABLE statement.

CREATE TABLE products (
  id INT NOT NULL PRIMARY KEY,
  name VARCHAR(30),
  price DECIMAL(6,2),
  stock INT
)

To remove a table, you would use the DROP TABLE statement.

DROP TABLE products
Data

Data is added to a table with the INSERT statement.

INSERT INTO products (id, name, price, stock) VALUES (101, "widget", 4.75, 10)

Data can be modified with the UPDATE statement.

INSERT products SET price = 4.99 WHERE id = 101

To delete data, use the DELETE statement.

DELETE FROM products WHERE id = 101

Finally, data can be retreived using the SELECT statement.

SELECT name, price, stock FROM products WHERE id = 101

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