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程式碼範例
C++
如要瞭解如何安裝及使用 Bigtable 的用戶端程式庫,請參閱這篇文章。
如要向 Bigtable 進行驗證,請設定應用程式預設憑證。
詳情請參閱「為本機開發環境設定驗證」。
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[[["容易理解","easyToUnderstand","thumb-up"],["確實解決了我的問題","solvedMyProblem","thumb-up"],["其他","otherUp","thumb-up"]],[["難以理解","hardToUnderstand","thumb-down"],["資訊或程式碼範例有誤","incorrectInformationOrSampleCode","thumb-down"],["缺少我需要的資訊/範例","missingTheInformationSamplesINeed","thumb-down"],["翻譯問題","translationIssue","thumb-down"],["其他","otherDown","thumb-down"]],[],[[["\u003cp\u003eThis content demonstrates how to retrieve table details from Bigtable if the table exists.\u003c/p\u003e\n"],["\u003cp\u003eIt outlines the process of automatically creating a table in Bigtable if it does not already exist.\u003c/p\u003e\n"],["\u003cp\u003eThe content includes code examples in C++ that showcase the table retrieval and creation process using the Bigtable client library.\u003c/p\u003e\n"],["\u003cp\u003eThe code provided can be used to authenticate to Bigtable.\u003c/p\u003e\n"],["\u003cp\u003eIt also mentions the use of the Google Cloud sample browser to search for additional code examples.\u003c/p\u003e\n"]]],[],null,["Get table details if it exists, or autocreate a table if it does not exist.\n\nCode sample \n\nC++\n\n\nTo learn how to install and use the client library for Bigtable, see\n[Bigtable client libraries](/bigtable/docs/reference/libraries).\n\n\nTo authenticate to Bigtable, set up Application Default Credentials.\nFor more information, see\n\n[Set up authentication for a local development environment](/docs/authentication/set-up-adc-local-dev-environment).\n\n namespace cbt = ::google::cloud::bigtable;\n namespace cbta = ::google::cloud::bigtable_admin;\n using ::google::cloud::StatusOr;\n [](cbta::BigtableTableAdminClient admin, std::string const& project_id,\n std::string const& instance_id, std::string const& table_id) {\n std::string instance_name = cbt::InstanceName(project_id, instance_id);\n std::string table_name = cbt::TableName(project_id, instance_id, table_id);\n\n google::bigtable::admin::v2::GetTableRequest r;\n r.set_name(table_name);\n r.set_view(google::bigtable::admin::v2::Table::FULL);\n\n StatusOr\u003cgoogle::bigtable::admin::v2::Table\u003e table = admin.GetTable(r);\n if (!table &&\n table.status().code() == google::cloud::StatusCode::kNotFound) {\n // The table does not exist, try to create the table.\n table = admin.CreateTable(instance_name, table_id, {});\n if (!table) throw std::move(table).status();\n // The schema returned by a `CreateTable()` request does not include all\n // the metadata for a table, we need to explicitly request the rest:\n table = admin.GetTable(std::move(r));\n }\n if (!table) throw std::move(table).status();\n std::cout \u003c\u003c \"Table metadata: \" \u003c\u003c table-\u003eDebugString() \u003c\u003c \"\\n\";\n }\n\nWhat's next\n\n\nTo search and filter code samples for other Google Cloud products, see the\n[Google Cloud sample browser](/docs/samples?product=bigtable)."]]