# Extending Ibis¶

Users typically want to extend ibis in one of two ways:

Below we provide notebooks showing how to extend ibis in each of these ways.

Note

Make sure you’ve run the following commands before executing the notebook

docker-compose up -d --no-build postgres dns
docker-compose run waiter

Here we show how to add a sha1 method to the PostgreSQL backend as well as how to add a new bitwise_and reduction operation: