Question

How to time SQL queries using psql?

Being able to tell how much time a query takes to run can be very useful when you’re trying to optimize your queries.

In this post, we’ll show you how to do this using the psql command-line tool.


Submit an answer

This textbox defaults to using Markdown to format your answer.

You can type !ref in this text area to quickly search our full set of tutorials, documentation & marketplace offerings and insert the link!

Sign In or Sign Up to Answer

These answers are provided by our Community. If you find them useful, show some love by clicking the heart. If you run into issues leave a comment, or add your own answer to help others.

Accepted Answer

Hello,

One of the most straightforward ways to time a query is to use the following:

  • First, connect to the database using psql:
  1. psql -h localhost -p 5432 -U postgres

Note that you would need to have the psql command installed on your machine:

https://www.digitalocean.com/community/tutorials/how-to-install-postgresql-on-ubuntu-20-04-quickstart

  • Then you can run the following statement to enable query timing:
\timing
  • Once you’ve executed the above statement, you can run the query you want to time.
SELECT * FROM users;

Output:

Time: 0.120 ms

This is going to be enabled for your current session only. Once you open a new session, the query timing will be disabled, so you will have to enable it again.

Hope that this helps!

Best,

Bobby