1 files changed, 26 insertions, 0 deletions
diff --git a/db/post_migrate/20200424043515_drop_namespaces_plan_id.rb b/db/post_migrate/20200424043515_drop_namespaces_plan_id.rb
new file mode 100644
index 00000000000..16a56b16e5a
--- /dev/null
+++ b/db/post_migrate/20200424043515_drop_namespaces_plan_id.rb
@@ -0,0 +1,26 @@
+# frozen_string_literal: true
+
+class DropNamespacesPlanId < ActiveRecord::Migration[6.0]
+  include Gitlab::Database::MigrationHelpers
+
+  DOWNTIME = false
+
+  disable_ddl_transaction!
+
+  def up
+    with_lock_retries do
+      remove_column :namespaces, :plan_id
+    end
+  end
+
+  def down
+    unless column_exists?(:namespaces, :plan_id)
+      with_lock_retries do
+        add_column :namespaces, :plan_id, :integer
+      end
+    end
+
+    add_concurrent_index :namespaces, :plan_id
+    add_concurrent_foreign_key :namespaces, :plans, column: :plan_id, on_delete: :nullify
+  end
+end