[#477] User trigram index adjustment.

priv/repo/migrations/20190118074940_fix_user_trigram_index.exs

@@ -0,0 +1,13 @@
+defmodule Pleroma.Repo.Migrations.FixUserTrigramIndex do
+  use Ecto.Migration
+
+  def up do
+    drop_if_exists index(:users, [], name: :users_trigram_index)
+    create index(:users, ["(trim(nickname || ' ' || name)) gist_trgm_ops"], name: :users_trigram_index, using: :gist)
+  end
+
+  def down do
+    drop_if_exists index(:users, [], name: :users_trigram_index)
+    create index(:users, ["(nickname || name) gist_trgm_ops"], name: :users_trigram_index, using: :gist)
+  end
+end