Postgres cheat sheet

Postgres.md

Postgres

Installation for OSX with Homebrew

brew install postgresql

Start postgres

brew services start postgresql

Default (test) database

psql postgres

Some api ref.

• \conninfo | Connection info
• \q | Exit psql connection
• \c | Connect to a new database
• \dt | List all tables
• \du | List all roles
• \list | List databases

Creating a role in Postgres

CREATE ROLE richxcame WITH LOGIN PASSWORD 'your_password';

Give access to create database to richxcame

ALTER ROLE richxcame CREATEDB;

Login as richxcame

psql -d postgres -U richxcame

CREATE DATABASE m111;

CREATE DATABASE m111;

Create table users

CREATE TABLE users (
  ID SERIAL PRIMARY KEY,
  name VARCHAR(30),
  email VARCHAR(30)
);

Insert some mock data

INSERT INTO users (name, email)
  VALUES ('Baygeldi', '[email protected]'), ('John', '[email protected]');

Show all users

SELECT * FROM users;