バージョンの制限
コレクションでコンテンツを整理
必要に応じて、コンテンツの保存と分類を行います。
取得する列のバージョン数を制限するフィルタを作成します。
もっと見る
このコードサンプルを含む詳細なドキュメントについては、以下をご覧ください。
コードサンプル
特に記載のない限り、このページのコンテンツはクリエイティブ・コモンズの表示 4.0 ライセンスにより使用許諾されます。コードサンプルは Apache 2.0 ライセンスにより使用許諾されます。詳しくは、Google Developers サイトのポリシーをご覧ください。Java は Oracle および関連会社の登録商標です。
[[["わかりやすい","easyToUnderstand","thumb-up"],["問題の解決に役立った","solvedMyProblem","thumb-up"],["その他","otherUp","thumb-up"]],[["わかりにくい","hardToUnderstand","thumb-down"],["情報またはサンプルコードが不正確","incorrectInformationOrSampleCode","thumb-down"],["必要な情報 / サンプルがない","missingTheInformationSamplesINeed","thumb-down"],["翻訳に関する問題","translationIssue","thumb-down"],["その他","otherDown","thumb-down"]],[],[[["\u003cp\u003eThis page provides code samples demonstrating how to filter and limit the number of versions of columns retrieved from Bigtable.\u003c/p\u003e\n"],["\u003cp\u003eCode examples are provided in C++, C#, Java, Node.js, Python, and Ruby, illustrating how to set up filters for column version retrieval.\u003c/p\u003e\n"],["\u003cp\u003eThe samples demonstrate how to limit the number of cell versions per column, typically to retrieve only the most recent cell version.\u003c/p\u003e\n"],["\u003cp\u003eInstructions are included to install and use the client libraries, as well as set up application default credentials for authenticating to Bigtable.\u003c/p\u003e\n"],["\u003cp\u003eLinks to further resources are provided, including Bigtable client libraries, setting up local authentication, and the Google Cloud sample browser.\u003c/p\u003e\n"]]],[],null,["Create a filter to limit the number of versions of columns to retrieve.\n\nExplore further\n\n\nFor detailed documentation that includes this code sample, see the following:\n\n- [C# hello world](/bigtable/docs/samples-c-sharp-hello)\n- [C++ hello world](/bigtable/docs/samples-cpp-hello)\n- [Node.js hello world](/bigtable/docs/samples-nodejs-hello)\n- [Python hello world](/bigtable/docs/samples-python-hello)\n- [Ruby hello world](/bigtable/docs/samples-ruby-hello)\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 cbt::Filter filter = cbt::Filter::ColumnRangeClosed(\"family\", \"c0\", \"c0\");\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 RowFilter filter = RowFilters.CellsPerRowLimit(1);\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 void filterLimitCellsPerCol(String tableId) {\n // A filter that matches only the most recent cell within each column\n Filter filter = FILTERS.limit().cellsPerColumn(1);\n readRowFilter(tableId, filter);\n readFilter(tableId, filter);\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 filter = [\n {\n column: {\n cellLimit: 1, // Only retrieve the most recent version of the cell.\n },\n },\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 # Create a filter to only retrieve the most recent version of the cell\n # for each column across entire row.\n row_filter = bigtable.row_filters.CellsColumnLimitFilter(1)\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 # Only retrieve the most recent version of the cell.\n filter = Google::Cloud::Bigtable::RowFilter.cells_per_column 1\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)."]]