There is a full tutorial on my blog http://simoncarr.co.uk/2019/03/28/LucidQL/
If you want to replicate my demo, the Northwind data is here in a MySQL format
LucidQL is a query language wrapper for the LUCID ORM that shipped with AdonisJS. It provides a client side query language similar to GraphQL, allowing you to limit fields, filter and include related data.
The most important thing is that unlike GraphQL there is not setup or ongoing maintenance because LUCID already knows all about your database.