避免默认索引但在 AppEngine 中保留显式定义的索引？
我有一些属性仅在需要复合索引的查询中引用。 AppEngine 将所有索引属性写入其自己的特殊索引，这需要每个属性进行 2 次额外的写入操作。
有没有什么方法可以指定属性不在其自己的索引中建立索引，但仍用于我的复合索引？
例如，我的实体可能是具有属性 name 和 group 的 Person。我的代码中唯一的查询是 select * from Person where group =name 上创建了一个索引，在 group 上创建了一个索引，这使得写入每个实体所需的写入操作数量增加了三倍！
我可以从文档中看到如何完全阻止属性用于索引，但我只想关闭少数索引（默认索引）的索引。
I have some properties that are only referenced in queries that require composite indices. AppEngine writes all indexed properties to their own special indexes, which requires 2 extra write operations per property.
Is there any way to specify that a property NOT be indexed in its own index, but still be used for my composite index?
For example, my entity might be a Person with properties name and group. The only query in my code is select * from Person where group = <group> and name > <name>, so the only index I really need is with group ascending and name ascending. But right now AppEngine is also creating an index on name and an index on group, which triples the number of write operations required to write each entity!
I can see from the documentation how to prevent a property from being used for indexing at all, but I want to turn off indexing only for a few indexes (the default ones).
如果你对这篇内容有疑问，欢迎到本站社区发帖提问 参与讨论，获取更多帮助，或者扫码二维码加入 Web 技术交流群。
绑定邮箱获取回复消息
由于您还没有绑定你的真实邮箱，如果其他用户或者作者回复了您的评论，将不能在第一时间通知您！
发布评论
评论（1）
据我目前的了解，您可以一起禁用属性上的索引（包括复合索引），或者您必须拥有所有索引（自动索引+来自index.yaml的复合索引）。
GAE 谷歌小组对此进行了一些讨论，并提出了一个功能请求，要求完全按照您的建议进行操作，但我无法找到它。当我回家并搜索更多内容时会更新答案。
From what I understand currently, you can either disable indexing on a property all together (which includes composite indexes) or you are stuck with having all indexes (automatic indexes + your composite indexs from index.yaml).
There was some discussion about this in the GAE google group and a feature request to do exactly what you are suggesting, but I wasn't able to find it. Will update the answer when I get home and search more.