mysql修改表后update_time总为null

费劲力气终于在老外网站上（第二个链接）找到了：In the MySQL "information_schema" database is a table called "TABLES" and it has a "UPDATE_TIME" column for each table in all databases on the given s MySQL server.

For MyISAM tables the "UPDATE_TIME" field is updated every time a change to the given table is made, for InnoDB tables the value for "UPDATE_TIME" is always NULL.

Maybe someone knows if there is a patch, so InnoDB tables get their "UPDATE_TIME" value updated as well.

Thanks,
David