Programming/PostgreSQL

PostgreSQL is an open source object-relational database.

It acts as an alternative to the common database MySQL.

Setup

• Setup

Syntax

• Databases
• Table Queries
• Record Queries

Basics

Accessing the PostgreSQL Shell

Access the PostgreSQL shell with:

psql -U <user_name> -d <database_name>

Exit the shell with:

\q

To access the PostgreSQL shell for the first time (prior to creating any additional users), invoke the postgres user:

sudo -u postgres psql

Accessing the Linux PostgreSQL Account

Sometimes (rarely), you'll want to access the actual Linux account made for PostgreSQL, rather than just the database user.
To do this, use:

sudo -i -u postgres

This is required for some commands, such as the createuser linux terminal command.