jayviannay / sql-cheat-basic

SQL CHEAT

Create & use DATABASE

CREATE DATABASE nom_de_la_bdd;
USE nom_de_la_bdd;

List all Databases

SHOW DATABASES;

Delete Database

DROP DATABASE nom_de_la_bdd;

TABLES

Create table

CREATE TABLE nom_de_la_table (
    id INT PRIMARY KEY AUTO_INCREMENT NOT NULL,
    name VARCHAR(150) NOT NULL,
    age INT NOT NULL,
    is_visible BOOL NULL,
    address TEXT NULL,
    birthday DATE NULL
);

Display structure table

DESCRIBE nom_de_la_table;

Display values from table

SELECT * FROM nom_de_la_table;

List all Tables

SHOW TABLES;

Insert value(s)

INSERT INTO nom_de_la_table (name, age, is_visible, address, birthday) VALUES ('plop', 15, 1, 'la fayette 75010', '1985-01-01'), (Other values) , (Other values);

Change structure of table

ALTER TABLE nom_de_la_table ADD nom_colomn TYPE OPTION;
Exemple pour ajouter une colonne :
ALTER TABLE nom_de_la_table ADD zipcode INT NOT NULL;

Update value

UPDATE nom_de_la_table SET nom_colomn='value';
UPDATE nom_de_la_table SET nom_colomn='value' WHERE id=1;

Delete value

DELETE FROM nom_de_la_table WHERE *condition*;
DELETE FROM nom_de_la_table WHERE id=1;

Delete all values from table

TRUNCATE TABLE nom_de_la_table;

Delete table

DROP TABLE nom_de_la_table;