Birthdays: users_birthday_month_day_index

Signed-off-by: marcin mikołajczak <git@mkljczk.pl>

priv/repo/migrations/20220125104429_add_birthday_month_day_index_to_users.exs

@@ -0,0 +1,11 @@
+defmodule Pleroma.Repo.Migrations.AddBirthdayMonthDayIndexToUsers do
+  use Ecto.Migration
+
+  def change do
+    create(
+      index(:users, ["date_part('month', birthday)", "date_part('day', birthday)"],
+        name: :users_birthday_month_day_index
+      )
+    )
+  end
+end