1 files changed, 17 insertions, 0 deletions
diff --git a/db/post_migrate/20220310060626_optimize_null_index_media_attachments_shortcode.rb b/db/post_migrate/20220310060626_optimize_null_index_media_attachments_shortcode.rb
new file mode 100644
index 000000000..658f3e42a
--- /dev/null
+++ b/db/post_migrate/20220310060626_optimize_null_index_media_attachments_shortcode.rb
@@ -0,0 +1,17 @@
+# frozen_string_literal: true
+
+require Rails.root.join('lib', 'mastodon', 'migration_helpers')
+
+class OptimizeNullIndexMediaAttachmentsShortcode < ActiveRecord::Migration[5.2]
+  include Mastodon::MigrationHelpers
+
+  disable_ddl_transaction!
+
+  def up
+    update_index :media_attachments, 'index_media_attachments_on_shortcode', :shortcode, unique: true, where: 'shortcode IS NOT NULL', opclass: :text_pattern_ops
+  end
+
+  def down
+    update_index :media_attachments, 'index_media_attachments_on_shortcode', :shortcode, unique: true
+  end
+end