1 files changed, 19 insertions, 0 deletions
diff --git a/db/migrate/20200406135648_add_index_to_created_at_on_resource_milestone_events.rb b/db/migrate/20200406135648_add_index_to_created_at_on_resource_milestone_events.rb
new file mode 100644
index 00000000000..6b8b981990d
--- /dev/null
+++ b/db/migrate/20200406135648_add_index_to_created_at_on_resource_milestone_events.rb
@@ -0,0 +1,19 @@
+# frozen_string_literal: true
+
+class AddIndexToCreatedAtOnResourceMilestoneEvents < ActiveRecord::Migration[6.0]
+  include Gitlab::Database::MigrationHelpers
+
+  INDEX_NAME = 'index_resource_milestone_events_created_at'
+
+  DOWNTIME = false
+
+  disable_ddl_transaction!
+
+  def up
+    add_concurrent_index :resource_milestone_events, :created_at, name: INDEX_NAME
+  end
+
+  def down
+    remove_concurrent_index_by_name :resource_milestone_events, INDEX_NAME
+  end
+end