Integration of MyXQL with Ecto for MySQL Support

In this detailed blog post, Wojtek Mach walks through the final steps of integrating a custom MySQL adapter, MyXQL, with Ecto—Elixir’s database wrapper and query generator. The content covers several essential integration points, including supporting Ecto changesets, queries, schemas, and Mix tasks. Mach also dives into how the Ecto Adapter specifications are fulfilled, touching upon specific callback implementations like `to_constraints` for handling SQL constraint violations and `loaders` for type conversion. The article concludes with insights on how integration tests in Ecto help ensure the consistency and reliability of new adapters, and reflects on the broader architectural themes such as separation of concerns and adherence to behaviours that facilitate robust and extendable code.