在Google App Engine数据模型中进行'OR'查询 [英] Making 'OR' Queries in Google App Engine Data Model

问题描述

我想进行这样的查询从Person where Address =OR age =选择姓名。这在GAE模型中是可行的吗？所有的东西都包括AND关闭，而不是OR。我该如何使用JDO / JPA来实现对象化。提前致谢

I want to make a query like this "Select name from Person where Address="" OR age="" ". Is that possible in the GAE model. All things include AND closure and not OR. How can i do that with JDO/JPA, Objectify. Thanks in advance

推荐答案

数据存储没有OR操作。您必须执行两个单独的查询并在您自己的代码中找到交集。

There is no "OR" operation on the datastore. You must do two separate queries and find the intersection in your own code.

http://code.google.com/appengine/docs/python/datastore/gqlreference.html

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