srinivasdamam / MySQL-Learning

Notes on MySQL

MySQL Learnings

Database

Create Database

CREATE DATABSE <name>;

E.g

CREATE DATABSE pet_store;

Note: Enclose the database name in quotes if name demands space character.

CREATE DATABSE `Pet Store`;

Drop Database

DROP DATABASE <name>;

Use Database

USE <database name>;

To know what database is currently used check the below command.

SELECT database();

Tables

Show Tables

SHOW TABLES;

Create Table

CREATE TABLE tablename
  (
    column_name data_type,
    column_name data_type
  );

E.g

CREATE TABLE cats
  (
    name VARCHAR(100),
    age INT
  );

Inspect Table

SHOW COLUMNS from <tablename>

DESC <tablename>;

Drop Table

DROP TABLE <tablename>

E.g

DROP TABLE cats;

Insert Into Table

INSERT INTO tablename 
            (column_name, column_name) VALUES (value, value), 
            (value, value), 
            (value, value);

E.g

INSERT INTO cats (name, age) VALUES ('Dave', 8);

Multiple insert

INSERT INTO cats (name, age) VALUES ('Dave', 8), ('Grey', 11), ('Blue', 1);