Programming Ecto

Starting Your App

To test our app, we need to fetch dependencies and compile the application:

> mix do deps.get, compile
Running dependency resolution...
...

If your database already exists, you can start working with Ecto right away. Test it out by running a simple query, like getting the row count of one of your tables:

MyApp.Repo.aggregate("some_table", :count, :some_column)

If don’t have a database yet, you can create it using the ecto.create mix task:

> mix ecto.create
The database for MyApp.Repo has been created

If that succeeds, then your configuration is working and Ecto is able to communicate with your database.