Execute raw sql queries conveniently
Repo.query is a convenience function that wraps the more verbose
Ecto.Adapters.SQL.query. Repo in this case is not Ecto.Repo but your application's Repo, so its more correct to say that YourApp.Repo.query is a convenience function that wraps Ecto.Adapters.SQL.query.
{:ok, result} = YourApp.Repo.query("select * from users order random()")
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