💚 pgctl -D /usr/local/var/postgres start waiting for server to start. 2021-01-17 17:03:03.686 EST 13710 FATAL: database files are incompatible with server 2021-01-17 17:03:03.686 EST 13710 DETAIL: The data directory was initialized by PostgreSQL version 12, which is not compatible with this version 13.1. Postgres.app is a simple, native macOS app that runs in the menubar without the need of an installer. Open the app, and you have a PostgreSQL server ready and awaiting new connections. Close the app, and the server shuts down. PostgreSQL can also be installed on macOS using Homebrew. Please see the Homebrew documentation.

In this tutorial we will learn to install PostgreSQL database on Mac using Homebrew.

Prerequisite

It is assumed that you have Homebrew installed on your Mac.

If you don't have Homebrew installed on your Mac then open Terminal and run the following command.

You can visit Homebrew official website https://brew.sh to learn more about it.

Once you have Homebrew (a.k.a. brew) installed on your machine you can run the following command in the Terminal to check the version.

To update run the following command.

Alright, time to install PostgreSQL on Mac.

Install PostgreSQL using Homebrew

In Terminal run the following command to install PostgreSQL on Mac using Homebrew.

We can check the version of PostgreSQL using the psql command.

Start PostgreSQL

To start PostgreSQL run the following command in the Terminal.

We will get a similar output shown below.

Brew Postgresql-upgrade-database

Stop PostgreSQL

To stop PostgreSQL run the following command in the Terminal.

We will get a similar output.

Brew Postgresql Start

Restart PostgreSQL

To restart PostgreSQL run the following command in the Terminal.

We will get a similar output as shown below.

Login to PostgreSQL database

By default we will get a database by the name postgres. So, to connect to it we will run the following command.

We will see the following output.

List all the users

To list all the users we use the du command.

List all the databases

To list all the databases run the l command.

Create a database

Brew Postgresql-upgrade-database Failed

To create a database run the following command. In the given example mydb is the name of the database.

Connect to a database

To connect to a database use the c command.

List all the tables inside a database

To list all the tables inside a database we run the d command.

Note! If there is no table then we will get a prompt stating no relations found.

Let us go ahead and create a simple users table inside the mydb database and try the above command again.

Create table

In the following example we are creating a simple users table.

Brew Install Postgresql 9.6

Now if we list the tables using the d command we will get the table.

How to exit from psql?

To exit or quit from psql type the q command.

Brew Postgresql Error

Alright, this brings us to the end of this tutorial. Hope you found it useful. Please share this tutorial if it was helpful. See you in the next tutorial. Have fun developing :-)