Add migration

priv/repo/migrations/20191026190712_set_not_null_for_conversation_participation_recipient_ships.exs

@@ -0,0 +1,17 @@
+defmodule Pleroma.Repo.Migrations.SetNotNullForConversationParticipationRecipientShips do
+  use Ecto.Migration
+
+  # modify/3 function will require index recreation, so using execute/1 instead
+
+  def up do
+    execute("ALTER TABLE conversation_participation_recipient_ships
+    ALTER COLUMN user_id SET NOT NULL,
+    ALTER COLUMN participation_id SET NOT NULL")
+  end
+
+  def down do
+    execute("ALTER TABLE conversation_participation_recipient_ships
+    ALTER COLUMN user_id DROP NOT NULL,
+    ALTER COLUMN participation_id DROP NOT NULL")
+  end
+end