Add GIN indexes for attributes which used to search.

priv/repo/migrations/20250427175337_add_gin_indexes.exs

@@ -0,0 +1,42 @@
+defmodule DecentralisedBookIndex.Repo.Migrations.AddGinIndexes do
+  @moduledoc """
+  Updates resources based on their most recent snapshots.
+
+  This file was autogenerated with `mix ash_postgres.generate_migrations`
+  """
+
+  use Ecto.Migration
+
+  def up do
+    execute("CREATE EXTENSION IF NOT EXISTS \"pg_trgm\"")
+
+    create index(:publishers, ["name gin_trgm_ops"],
+             name: "publisher_name_gin_index",
+             using: "GIN"
+           )
+
+    create index(:dbi_servers, ["name gin_trgm_ops"], name: "server_name_gin_index", using: "GIN")
+
+    create index(:books, ["title gin_trgm_ops"], name: "book_title_gin_index", using: "GIN")
+
+    create index(:book_ids, ["bid gin_trgm_ops"], name: "book_id_bid_gin_index", using: "GIN")
+
+    create index(:book_ids, ["type gin_trgm_ops"], name: "book_id_type_gin_index", using: "GIN")
+
+    create index(:authors, ["name gin_trgm_ops"], name: "author_name_gin_index", using: "GIN")
+  end
+
+  def down do
+    drop_if_exists index(:authors, ["name gin_trgm_ops"], name: "author_name_gin_index")
+
+    drop_if_exists index(:book_ids, ["type gin_trgm_ops"], name: "book_id_type_gin_index")
+
+    drop_if_exists index(:book_ids, ["bid gin_trgm_ops"], name: "book_id_bid_gin_index")
+
+    drop_if_exists index(:books, ["title gin_trgm_ops"], name: "book_title_gin_index")
+
+    drop_if_exists index(:dbi_servers, ["name gin_trgm_ops"], name: "server_name_gin_index")
+
+    drop_if_exists index(:publishers, ["name gin_trgm_ops"], name: "publisher_name_gin_index")
+  end
+end