1 files changed, 18 insertions, 0 deletions
diff --git a/db/migrate/20210223132934_add_foreign_key_to_external_approval_rules.rb b/db/migrate/20210223132934_add_foreign_key_to_external_approval_rules.rb
new file mode 100644
index 00000000000..b5f04672813
--- /dev/null
+++ b/db/migrate/20210223132934_add_foreign_key_to_external_approval_rules.rb
@@ -0,0 +1,18 @@
+# frozen_string_literal: true
+
+class AddForeignKeyToExternalApprovalRules < ActiveRecord::Migration[6.0]
+  include Gitlab::Database::MigrationHelpers
+  DOWNTIME = false
+
+  disable_ddl_transaction!
+
+  def up
+    add_concurrent_foreign_key :external_approval_rules_protected_branches, :external_approval_rules, column: :external_approval_rule_id, on_delete: :cascade
+  end
+
+  def down
+    with_lock_retries do
+      remove_foreign_key :external_approval_rules_protected_branches, column: :external_approval_rule_id
+    end
+  end
+end