lib/rom/sql/gateway.rb in rom-sql-3.0.1 vs lib/rom/sql/gateway.rb in rom-sql-3.1.0

@@ -232,9 +232,12 @@
         connection.extension(*extensions)
 
         # this will be default in Sequel 5.0.0 and since we don't rely
         # on dataset mutation it is safe to enable it already
         connection.extension(:freeze_datasets) unless RUBY_ENGINE == 'rbx'
+
+        # for ROM::SQL::Relation#nullify
+        connection.extension(:null_dataset)
       end
 
       # @api private
       def transaction_runner(_)
         ROM::SQL::Transaction.new(connection)