    # File lib/active_record/connection_adapters/sqlserver_adapter.rb, line 448
          def add_column(table_name, column_name, type, options = {})
            add_column_sql = "ALTER TABLE #{table_name} ADD #{quote_column_name(column_name)} #{type_to_sql(type, options[:limit], options[:precision], options[:scale])}"
            add_column_options!(add_column_sql, options)
            # TODO: Add support to mimic date columns, using constraints to mark them as such in the database
            # add_column_sql << " CONSTRAINT ck__#{table_name}__#{column_name}__date_only CHECK ( CONVERT(CHAR(12), #{quote_column_name(column_name)}, 14)='00:00:00:000' )" if type == :date
            execute(add_column_sql)
          end