Seleccionar idstudy segun identifierfield para redirect

lib/api_web/controllers/redirect.ex

@@ -1,6 +1,8 @@
 defmodule ApiWeb.Redirect do
   use ApiWeb, :controller
   require Logger
+  alias Api.Repo
+  import Ecto.Query
 
   def index(conn, %{"accession" => accession}) do
     Envar.load(".env")
@@ -77,16 +79,12 @@ defmodule ApiWeb.Redirect do
       query =
         if studyidentifier == "IDSTUDY" do
           from s in "study",
-            join: p in "patient",
-            on: p.idpatient == s.idpatient,
             where: s.accessionnumber == ^accessionnumber,
             select: %{
               idstudy: s.idstudy
             }
         else
           from s in "study",
-            join: p in "patient",
-            on: p.idpatient == s.idpatient,
             where: s.accessionnumber == ^accessionnumber,
             select: %{
               idstudy: s.idstudy