Teilzeile lesen
Mit Sammlungen den Überblick behalten
Sie können Inhalte basierend auf Ihren Einstellungen speichern und kategorisieren.
Zeile mit einem angegebenen Filter lesen
Weitere Informationen
Eine ausführliche Dokumentation, die dieses Codebeispiel enthält, finden Sie hier:
Codebeispiel
Nächste Schritte
Wenn Sie nach Codebeispielen für andere Google Cloud -Produkte suchen und filtern möchten, können Sie den Google Cloud -Beispielbrowser verwenden.
Sofern nicht anders angegeben, sind die Inhalte dieser Seite unter der Creative Commons Attribution 4.0 License und Codebeispiele unter der Apache 2.0 License lizenziert. Weitere Informationen finden Sie in den Websiterichtlinien von Google Developers. Java ist eine eingetragene Marke von Oracle und/oder seinen Partnern.
[[["Leicht verständlich","easyToUnderstand","thumb-up"],["Mein Problem wurde gelöst","solvedMyProblem","thumb-up"],["Sonstiges","otherUp","thumb-up"]],[["Schwer verständlich","hardToUnderstand","thumb-down"],["Informationen oder Beispielcode falsch","incorrectInformationOrSampleCode","thumb-down"],["Benötigte Informationen/Beispiele nicht gefunden","missingTheInformationSamplesINeed","thumb-down"],["Problem mit der Übersetzung","translationIssue","thumb-down"],["Sonstiges","otherDown","thumb-down"]],[],[],[],null,["Read a row with a specified filter.\n\nExplore further\n\n\nFor detailed documentation that includes this code sample, see the following:\n\n- [Read examples](/bigtable/docs/reading-data)\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 using ::google::cloud::StatusOr;\n [](google::cloud::bigtable::Table table, std::string const& row_key) {\n StatusOr\u003cstd::pair\u003cbool, cbt::Row\u003e\u003e tuple = table.ReadRow(\n row_key, cbt::Filter::ColumnName(\"stats_summary\", \"os_build\"));\n if (!tuple) throw std::move(tuple).status();\n if (!tuple-\u003efirst) {\n std::cout \u003c\u003c \"Row \" \u003c\u003c row_key \u003c\u003c \" not found\\n\";\n return;\n }\n PrintRow(tuple-\u003esecond);\n }\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\n /// \u003csummary\u003e\n /// /// Reads part of one row from an existing table.\n ///\u003c/summary\u003e\n /// \u003cparam name=\"projectId\"\u003eYour Google Cloud Project ID.\u003c/param\u003e\n /// \u003cparam name=\"instanceId\"\u003eYour Google Cloud Bigtable Instance ID.\u003c/param\u003e\n /// \u003cparam name=\"tableId\"\u003eYour Google Cloud Bigtable table ID.\u003c/param\u003e\n\n public string ReadRowPartial(string projectId = \"YOUR-PROJECT-ID\", string instanceId = \"YOUR-INSTANCE-ID\", string tableId = \"YOUR-TABLE-ID\")\n {\n BigtableClient bigtableClient = BigtableClient.Create();\n TableName tableName = new TableName(projectId, instanceId, tableId);\n string rowkey = \"phone#4c410523#20190501\";\n RowFilter filter = RowFilters.ColumnQualifierExact(\"os_build\");\n Row row = bigtableClient.ReadRow(tableName, rowkey, filter);\n return PrintRow(row);\n }\n\nGo\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 func readRowPartial(w io.Writer, projectID, instanceID string, tableName string) error {\n \t// projectID := \"my-project-id\"\n \t// instanceID := \"my-instance-id\"\n \t// tableName := \"mobile-time-series\"\n\n \tctx := context.Background()\n \tclient, err := bigtable.NewClient(ctx, projectID, instanceID)\n \tif err != nil {\n \t\treturn fmt.Errorf(\"bigtable.NewClient: %w\", err)\n \t}\n \tdefer client.Close()\n\n \ttbl := client.Open(tableName)\n \trowKey := \"phone#4c410523#20190501\"\n \trow, err := tbl.ReadRow(ctx, rowKey, bigtable.RowFilter(bigtable.ColumnFilter(\"os_build\")))\n \tif err != nil {\n \t\treturn fmt.Errorf(\"could not read row with key %s: %w\", rowKey, err)\n \t}\n\n \tprintRow(w, row)\n\n \treturn nil\n }\n\nJava\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 public static void readRowPartial() {\n // TODO(developer): Replace these variables before running the sample.\n String projectId = \"my-project-id\";\n String instanceId = \"my-instance-id\";\n String tableId = \"mobile-time-series\";\n readRowPartial(projectId, instanceId, tableId);\n }\n\n public static void readRowPartial(String projectId, String instanceId, String tableId) {\n // Initialize client that will be used to send requests. This client only needs to be created\n // once, and can be reused for multiple requests. After completing all of your requests, call\n // the \"close\" method on the client to safely clean up any remaining background resources.\n try (BigtableDataClient dataClient = BigtableDataClient.create(projectId, instanceId)) {\n String rowkey = \"phone#4c410523#20190501\";\n Filters.Filter filter =\n FILTERS\n .chain()\n .filter(FILTERS.family().exactMatch(\"stats_summary\"))\n .filter(FILTERS.qualifier().exactMatch(\"os_build\"));\n\n Row row = dataClient.readRow(TableId.of(tableId), rowkey, filter);\n printRow(row);\n\n } catch (IOException e) {\n System.out.println(\n \"Unable to initialize service client, as a network error occurred: \\n\" + e.toString());\n }\n }\n\nNode.js\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 const COLUMN_FAMILY = 'stats_summary';\n const COLUMN_QUALIFIER = 'os_build';\n const rowkey = 'phone#4c410523#20190501';\n\n const [row] = await table\n .row(rowkey)\n .get([`${COLUMN_FAMILY}:${COLUMN_QUALIFIER}`]);\n\n printRow(rowkey, row);\n\nPHP\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 use Google\\Cloud\\Bigtable\\BigtableClient;\n use Google\\Cloud\\Bigtable\\Filter;\n\n /**\n * Read partial row data\n *\n * @param string $projectId The Google Cloud project ID\n * @param string $instanceId The ID of the Bigtable instance\n * @param string $tableId The ID of the table to read from\n */\n function read_row_partial(\n string $projectId,\n string $instanceId,\n string $tableId\n ): void {\n // Connect to an existing table with an existing instance.\n $dataClient = new BigtableClient([\n 'projectId' =\u003e $projectId,\n ]);\n $table = $dataClient-\u003etable($instanceId, $tableId);\n\n $rowkey = 'phone#4c410523#20190501';\n $rowFilter = Filter::qualifier()-\u003eregex('os_build');\n $row = $table-\u003ereadRow($rowkey, ['filter' =\u003e $rowFilter]);\n\n print_row($rowkey, $row);\n }\n\nPython\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 def read_row_partial(project_id, instance_id, table_id):\n from google.cloud import https://cloud.google.com/python/docs/reference/bigtable/latest/\n from google.cloud.bigtable import row_filters\n\n client = https://cloud.google.com/python/docs/reference/bigtable/latest/.https://cloud.google.com/python/docs/reference/bigtable/latest/google.cloud.bigtable.client.Client.html(project=project_id, admin=True)\n instance = https://cloud.google.com/python/docs/reference/bigtable/latest/google.cloud.bigtable.client.html.https://cloud.google.com/python/docs/reference/bigtable/latest/google.cloud.bigtable.client.Client.html#google_cloud_bigtable_client_Client_instance(instance_id)\n table = instance.table(table_id)\n\n row_key = \"phone#4c410523#20190501\"\n col_filter = row_filters.ColumnQualifierRegexFilter(b\"os_build\")\n\n row = table.read_row(row_key, filter_=col_filter)\n print_row(row)\n\nRuby\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 # instance_id = \"my-instance\"\n # table_id = \"my-table\"\n bigtable = Google::Cloud::https://cloud.google.com/ruby/docs/reference/google-cloud-bigtable-admin-v2/latest/Google-Cloud-Bigtable.html.https://cloud.google.com/ruby/docs/reference/google-cloud-bigtable/latest/Google-Cloud-Bigtable.html\n table = bigtable.table instance_id, table_id\n filter = Google::Cloud::https://cloud.google.com/ruby/docs/reference/google-cloud-bigtable-admin-v2/latest/Google-Cloud-Bigtable.html::https://cloud.google.com/ruby/docs/reference/google-cloud-bigtable/latest/Google-Cloud-Bigtable-RowFilter.html.qualifier \"os_build\"\n\n row = table.https://cloud.google.com/ruby/docs/reference/google-cloud-bigtable/latest/Google-Cloud-Bigtable-ReadOperations.html \"phone#4c410523#20190501\", filter: filter\n print_row row\n end\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)."]]