phoenix query get first record
iex> Movie |> first() |> Repo.one()
SELECT m0."id", m0."title", m0."tagline" FROM "movies" AS m0 ORDER BY m0."id" LIMIT 1 []
%Friends.Movie{
__meta__: #Ecto.Schema.Metadata<:loaded, "movies">,
actors: #Ecto.Association.NotLoaded<association :actors is not loaded>,
characters: #Ecto.Association.NotLoaded<association :characters is not loaded>,
distributor: #Ecto.Association.NotLoaded<association :distributor is not loaded>,
id: 1,
tagline: "Something about video games",
title: "Ready Player One"
}