1 files changed, 19 insertions, 0 deletions
diff --git a/db/migrate/20200521225337_add_foreign_key_to_user_id_on_alert_management_alert_assignees.rb b/db/migrate/20200521225337_add_foreign_key_to_user_id_on_alert_management_alert_assignees.rb
new file mode 100644
index 00000000000..9d97c68f78f
--- /dev/null
+++ b/db/migrate/20200521225337_add_foreign_key_to_user_id_on_alert_management_alert_assignees.rb
@@ -0,0 +1,19 @@
+# frozen_string_literal: true
+
+class AddForeignKeyToUserIdOnAlertManagementAlertAssignees < ActiveRecord::Migration[6.0]
+  include Gitlab::Database::MigrationHelpers
+
+  DOWNTIME = false
+
+  def up
+    with_lock_retries do
+      add_foreign_key :alert_management_alert_assignees, :users, column: :user_id, on_delete: :cascade # rubocop:disable Migration/AddConcurrentForeignKey
+    end
+  end
+
+  def down
+    with_lock_retries do
+      remove_foreign_key :alert_management_alert_assignees, column: :user_id
+    end
+  end
+end