1 files changed, 15 insertions, 0 deletions
diff --git a/db/migrate/20211116093739_add_foreign_key_to_incident_management_timeline_events_on_updated_by_user.rb b/db/migrate/20211116093739_add_foreign_key_to_incident_management_timeline_events_on_updated_by_user.rb
new file mode 100644
index 00000000000..a35020699fc
--- /dev/null
+++ b/db/migrate/20211116093739_add_foreign_key_to_incident_management_timeline_events_on_updated_by_user.rb
@@ -0,0 +1,15 @@
+# frozen_string_literal: true
+
+class AddForeignKeyToIncidentManagementTimelineEventsOnUpdatedByUser < Gitlab::Database::Migration[1.0]
+  disable_ddl_transaction!
+
+  def up
+    add_concurrent_foreign_key :incident_management_timeline_events, :users, column: :updated_by_user_id, on_delete: :nullify
+  end
+
+  def down
+    with_lock_retries do
+      remove_foreign_key :incident_management_timeline_events, column: :updated_by_user_id
+    end
+  end
+end