此内容没有您所选择的语言版本。

14.17. Components


Components can be used similarly to the simple value types that are used in HQL queries. They can appear in the select clause as follows:
select p.name from Person p
Copy to Clipboard Toggle word wrap
select p.name.first from Person p
Copy to Clipboard Toggle word wrap
where the Person's name property is a component. Components can also be used in the where clause:
from Person p where p.name = :name
Copy to Clipboard Toggle word wrap
from Person p where p.name.first = :firstName
Copy to Clipboard Toggle word wrap
Components can also be used in the order by clause:
from Person p order by p.name
Copy to Clipboard Toggle word wrap
from Person p order by p.name.first
Copy to Clipboard Toggle word wrap
Another common use of components is in Section 14.18, “Row value constructor syntax”.
返回顶部
Red Hat logoGithubredditYoutubeTwitter

学习

尝试、购买和销售

社区

关于红帽文档

通过我们的产品和服务,以及可以信赖的内容,帮助红帽用户创新并实现他们的目标。 了解我们当前的更新.

让开源更具包容性

红帽致力于替换我们的代码、文档和 Web 属性中存在问题的语言。欲了解更多详情,请参阅红帽博客.

關於紅帽

我们提供强化的解决方案,使企业能够更轻松地跨平台和环境(从核心数据中心到网络边缘)工作。

Theme

© 2025 Red Hat