使用“在数组中”过滤条件查询 Firestore 集合
使用集合让一切井井有条
根据您的偏好保存内容并对其进行分类。
使用“在数组中”过滤条件查询 Firestore 集合
深入探索
如需查看包含此代码示例的详细文档,请参阅以下内容:
代码示例
如未另行说明,那么本页面中的内容已根据知识共享署名 4.0 许可获得了许可,并且代码示例已根据 Apache 2.0 许可获得了许可。有关详情,请参阅 Google 开发者网站政策。Java 是 Oracle 和/或其关联公司的注册商标。
[[["易于理解","easyToUnderstand","thumb-up"],["解决了我的问题","solvedMyProblem","thumb-up"],["其他","otherUp","thumb-up"]],[["很难理解","hardToUnderstand","thumb-down"],["信息或示例代码不正确","incorrectInformationOrSampleCode","thumb-down"],["没有我需要的信息/示例","missingTheInformationSamplesINeed","thumb-down"],["翻译问题","translationIssue","thumb-down"],["其他","otherDown","thumb-down"]],[],[[["This page demonstrates how to query a Firestore collection using an \"in\" array filter across multiple programming languages."],["The code samples show how to filter a \"cities\" collection to find documents where the \"regions\" field matches either \"west_coast\" or \"east_coast\"."],["Each code example highlights the use of `whereIn` or its equivalent method for performing the in-array filter operation on the \"regions\" field in languages like C#, Go, Java, Node.js, PHP, Python, and Ruby."],["To authenticate and run the provided code, you must set up Application Default Credentials as detailed in the linked documentation."],["The provided links contain more detailed documentation about querying Firestore and filtering data, including how to perform these operations."]]],[]]