Installing postgresql

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My setup (recommended)

I work in the terminal on the command line

with postgresql installed and running in the background

and use psql and related postgresql command pgdump pg_restore createdb, ...

Alternative

Use a UI interface pgAdmin.

• no terminal hurdle, easier to get started
• but I can never remember where to click.

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Prerequisites

• good grasp of the terminal. On windows there's many different types of terminals. very confusing. use wsl or ??? with admin permissions.
• you should be able to set the PATH environment variable.

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all you need to know

• Install PostgresQL 16 on Local

https://www.postgresql.org/download/

https://www.enterprisedb.com/downloads/postgres-postgresql-downloads

• for mac: use brew and follow https://atlassc.net/2024/03/11/installing-postgresql-on-macos-with-homebrew
• for Windows : https://www.postgresqltutorial.com/postgresql-getting-started/install-postgresql/

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Windows

I wrote a detailled step by step guide for windows users here:

dbsql/installing_on_windows/

PgAdmin

for mac: https://www.postgresql.org/download/macosx/

or https://postgresapp.com/

Postico

for mac: https://eggerapps.at/postico/

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Goal

make sure you know how to

• start and stop postgres
  • brew services start postgresql@16
  • brew services stop postgresql@16
• check that postgres is running with
  • launchctl list | grep postgres
• connect with psql in the terminal
  • psql -U postgres | your_local_username
• list users with \du : you should see 1 or 2 users
  • postgres
  • your own name

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Meta commands

\

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list databases, tables, users etc

Postgresql has a specific syntax to list databases, tables, users etc, all start with \

\l # list databases
\c <database_name># connect to a database
\du # list users

and

\d # list all tables, views, sequences
\dt # list tables
\d <table_name> # shows columns of a specific table

\df # list functions
\dn # list schemas
\dv # list views

and most important (a bit like exiting vim):

\q # quit

https://commandprompt.com/education/postgresql-basic-psql-commands/

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Practice

take a few minutes to go through this tutorial

https://tomcam.github.io/postgres/

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Pgadmin

this seems like a good walkthrough for windows (screenshots are windows)

https://www.tpointtech.com/connect-to-a-postgresql-database-server

and this for both mac and windows

https://neon.com/postgresql/postgresql-getting-started/connect-to-postgresql-database#2-connect-to-postgresql-database-server-using-pgadmin

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EOD

• check if postgres is running with launchctl list | grep postgres or brew services list
• start | stop it with brew services start | stop postgresql@16
• create a database
  • use createdb in the terminal
  • or in pgadmin
• connect to a local database ( psql | pgadmin )

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Next

Wrapup