Explore the process of creating a domain-specific query language using NimbleParsec and Ecto in this conference talk from Code BEAM Europe 2023. Learn how to design and implement a user-friendly query system that allows for complex data selection without the need for unwieldy query parameters or technical expertise. Discover how to leverage Elixir, NimbleParsec, and Ecto to parse custom language syntax into an Abstract Syntax Tree and generate valid queries using Ecto dynamic queries. Gain insights into building more intuitive and powerful API interfaces for non-technical users, enabling them to construct sophisticated queries like filtering devices based on location, connection status, and tags.