I want to learn a simple command to edit a value saved in data base in production

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In order to update an entry in your database, you need to use an UPDATE statement.

So let’s say that you have a table called users and a column called nickname and you want to change the entry for a user with nickname DigitalOcean to DO, you could do that with this query:

UPDATE users SET nickname = 'DO' WHERE nickname = 'DigitalOcean';

Of course, if you are unsure, always make a backup of your database first!

I would recommend having a look at this tutorial on how to install and also use a PostgreSQL database:


Also you could go through some of the PostgreSQL tutorials here:


Hope that this helps!

by Justin Ellingwood
by Mark Drake
This tutorial provides instructions on how to install the PostgreSQL database software on an Ubuntu 18.04 server. It also includes instructions for basic database management.