Even if the database is newly created and still empty, system tables and views are always present, so you can use them as follows.

即使数据库是新创建且仍然为空的，也总是会带有系统表和视图，因此，您可以按以下方法使用它们。

youdao

Even if the database is newly created and still empty, system tables and views are always present, so you can use them as follows.

即使数据库是新创建且仍然为空的，也总是会带有系统表和视图，因此，您可以按以下方法使用它们。

youdao