I think Elixir ECTO does a very good job at that https://hexdocs.pm/ecto/Ecto.Query.html#module-composition https://hexdocs.pm/ecto/Ecto.Query.html#module-comp

I think Elixir ECTO does a very good job at that https://hexdocs.pm/ecto/Ecto.Query.html#module-composition https://hexdocs.pm/ecto/Ecto.Query.html#module-composition