通过定义视图而不是显式的表，可以避免垂直模式的主要缺点，即许多查询要求它与本身进行联结，而这种操作是很昂贵的。

By making a view, rather than an explicit table, we avoid the main disadvantage of a vertical schema, namely that many queries require it to be joined with itself, which can be expensive.

youdao

通过定义视图而不是显式的表，可以避免垂直模式的主要缺点，即许多查询要求它与本身进行联结，而这种操作是很昂贵的。

By making a view, rather than an explicit table, we avoid the main disadvantage of a vertical schema, namely that many queries require it to be joined with itself, which can be expensive.

youdao