{"id":6010,"date":"2024-12-13T18:21:24","date_gmt":"2024-12-13T09:21:24","guid":{"rendered":"https:\/\/blog.since2020.jp\/?p=6010"},"modified":"2025-06-26T10:07:46","modified_gmt":"2025-06-26T01:07:46","slug":"polars_glossary","status":"publish","type":"post","link":"https:\/\/since2020.jp\/media\/polars_glossary\/","title":{"rendered":"Polars\u3068\u306f\uff1f2025\u5e74\u6700\u65b0\u60c5\u5831\u3067\u8aad\u307f\u89e3\u304f\u30c7\u30fc\u30bf\u51e6\u7406\u306e\u9769\u65b0"},"content":{"rendered":"\n<p>Polars\u306e\u57fa\u672c\u304b\u3089\u6700\u65b0\u306e\u30a2\u30c3\u30d7\u30c7\u30fc\u30c8\uff082025\u5e74\uff09\u3001\u5f37\u5316\u3055\u308c\u305fLazyFrame\u30fbStreaming\u306e\u6a5f\u80fd\u3001\u5b9f\u8df5\u6d3b\u7528\u4f8b\u307e\u3067\u7db2\u7f85\u7684\u306b\u89e3\u8aac\u3002\u4eca\u5f8c\u306e\u9032\u5316\u306b\u3082\u6ce8\u76ee\u3057\u3001Python\u30e6\u30fc\u30b6\u30fc\u3084\u30c7\u30fc\u30bf\u30a8\u30f3\u30b8\u30cb\u30a2\u306b\u3068\u3063\u3066\u306e\u4fa1\u5024\u3092\u518d\u767a\u898b\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n<h2>\u306f\u3058\u3081\u306b<\/h2>\n<p>Polars\u306f\u3001\u8fd1\u5e74\u6025\u901f\u306b\u6ce8\u76ee\u3092\u96c6\u3081\u3066\u3044\u308b\u6b21\u4e16\u4ee3\u30c7\u30fc\u30bf\u30d5\u30ec\u30fc\u30e0\u30e9\u30a4\u30d6\u30e9\u30ea\u3067\u3059\u3002\u7279\u306b2025\u5e74\u306b\u306f\u6570\u3005\u306e\u30a2\u30c3\u30d7\u30c7\u30fc\u30c8\u304c\u5b9f\u65bd\u3055\u308c\u3001\u6027\u80fd\u3068\u6a5f\u80fd\u306e\u4e21\u9762\u3067\u5927\u5e45\u306a\u9032\u5316\u3092\u9042\u3052\u307e\u3057\u305f\u3002Rust\u30d9\u30fc\u30b9\u306e\u8d85\u9ad8\u901f\u30a2\u30fc\u30ad\u30c6\u30af\u30c1\u30e3\u3068\u3001Python\u30e6\u30fc\u30b6\u30fc\u306b\u3082\u512a\u3057\u3044API\u8a2d\u8a08\u306b\u3088\u308a\u3001\u30c7\u30fc\u30bf\u5206\u6790\u3084ETL\u306e\u73fe\u5834\u3067\u5f37\u529b\u306a\u9078\u629e\u80a2\u3068\u306a\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\r\n<p>\u6700\u65b0\u7248\u3067\u306f\u3001\u30af\u30a8\u30ea\u30aa\u30d7\u30c6\u30a3\u30de\u30a4\u30b6\u306e\u5f37\u5316\u3084Streaming API\u306e\u6a5f\u80fd\u6539\u5584\u3001\u3055\u3089\u306bLazyFrame\u306b\u3088\u308b\u9ad8\u5ea6\u306a\u9045\u5ef6\u8a55\u4fa1\u6226\u7565\u306e\u9032\u5316\u306a\u3069\u304c\u542b\u307e\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\r\n<p><!-- notionvc: 1c2f0689-601c-4a95-b92d-6da8bd4724b9 --><\/p>\n\n<h2>Polars\u306e\u57fa\u672c\u6982\u5ff5<\/h2>\n<b>Polars\u3068\u306f\uff1f<\/b>\r\n<p>Polars\u306fRust\u88fd\u3067\u3042\u308a\u306a\u304c\u3089\u3001Python\u30d0\u30a4\u30f3\u30c7\u30a3\u30f3\u30b0\u3092\u901a\u3058\u3066\u67d4\u8edf\u306b\u64cd\u4f5c\u53ef\u80fd\u306a\u30c7\u30fc\u30bf\u5206\u6790\u30e9\u30a4\u30d6\u30e9\u30ea\u3067\u3059\u3002\u5217\u6307\u5411\u8a2d\u8a08\u306b\u3088\u308a\u3001\u5927\u898f\u6a21\u306a\u30c7\u30fc\u30bf\u30d5\u30ec\u30fc\u30e0\u306e\u64cd\u4f5c\u306b\u6700\u9069\u5316\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\r\n<ul>\r\n\t<li>\u5217\u3054\u3068\u306b\u4e26\u5217\u51e6\u7406\u3092\u884c\u3046\u3053\u3068\u3067\u9ad8\u901f\u5316<\/li>\r\n\t<li>Null\u5b89\u5168\u3001\u578b\u5b89\u5168\u306aAPI<\/li>\r\n\t<li>Pandas\u30e9\u30a4\u30af\u306a\u69cb\u6587\u3067\u3001\u5b66\u7fd2\u30b3\u30b9\u30c8\u3092\u6291\u5236<\/li>\r\n<\/ul>\r\n<b>\u306a\u305cPolars\u304c\u9078\u3070\u308c\u308b\u306e\u304b\uff1f<\/b>\r\n<p>Polars\u304c\u591a\u304f\u306e\u30c7\u30fc\u30bf\u30b5\u30a4\u30a8\u30f3\u30c6\u30a3\u30b9\u30c8\u3084\u30a8\u30f3\u30b8\u30cb\u30a2\u306b\u652f\u6301\u3055\u308c\u3066\u3044\u308b\u7406\u7531\u306f\u3001\u305d\u306e<strong>\u5727\u5012\u7684\u306a\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9<\/strong>\u306b\u3042\u308a\u307e\u3059\u3002C\u3084Rust\u3068\u3044\u3063\u305f\u4f4e\u30ec\u30a4\u30e4\u30fc\u8a00\u8a9e\u3067\u5b9f\u88c5\u3055\u308c\u3066\u3044\u308b\u305f\u3081\u3001Python\u30d9\u30fc\u30b9\u306ePandas\u3068\u6bd4\u8f03\u3057\u3066\u683c\u6bb5\u306b\u9ad8\u901f\u3067\u3001\u7279\u306b\u8a08\u7b97\u91cf\u306e\u591a\u3044\u51e6\u7406\u3084\u5927\u898f\u6a21\u306a\u30c7\u30fc\u30bf\u5206\u6790\u306e\u73fe\u5834\u3067\u306f\u305d\u306e\u5dee\u304c\u9855\u8457\u3067\u3059\u3002<\/p>\r\n<p>\u307e\u305f\u3001<strong>\u30b9\u30b1\u30fc\u30e9\u30d3\u30ea\u30c6\u30a3\u306e\u9ad8\u3055<\/strong>\u3082Polars\u306e\u5927\u304d\u306a\u9b45\u529b\u3067\u3059\u3002\u30e1\u30e2\u30ea\u306e\u4f7f\u7528\u52b9\u7387\u304c\u975e\u5e38\u306b\u512a\u308c\u3066\u304a\u308a\u3001\u6570\u5343\u4e07\u301c\u6570\u5104\u884c\u3068\u3044\u3063\u305f\u5de8\u5927\u306a\u30c7\u30fc\u30bf\u30bb\u30c3\u30c8\u3067\u3082\u3001\u4e00\u822c\u7684\u306a\u30de\u30b7\u30f3\u69cb\u6210\u3067\u30b9\u30c8\u30ec\u30b9\u306a\u304f\u6271\u3046\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\r\n<p>\u3055\u3089\u306b\u3001Polars\u306f<strong>\u5b89\u5b9a\u6027<\/strong>\u306b\u3082\u5b9a\u8a55\u304c\u3042\u308a\u307e\u3059\u3002\u5305\u62ec\u7684\u306a\u30c6\u30b9\u30c8\u30b9\u30a4\u30fc\u30c8\u306b\u52a0\u3048\u3001\u6d3b\u767a\u306a\u958b\u767a\u3068\u8fc5\u901f\u306a\u30d0\u30b0\u4fee\u6b63\u306b\u3088\u308a\u3001\u5e38\u306b\u4fe1\u983c\u6027\u306e\u9ad8\u3044\u72b6\u614b\u304c\u4fdd\u305f\u308c\u3066\u3044\u307e\u3059\u3002\u3053\u3046\u3057\u305f\u7279\u5fb4\u306e\u7d44\u307f\u5408\u308f\u305b\u304c\u3001Polars\u3092\u6b21\u4e16\u4ee3\u306e\u6a19\u6e96\u7684\u306a\u30c7\u30fc\u30bf\u51e6\u7406\u30c4\u30fc\u30eb\u3068\u3057\u3066\u969b\u7acb\u305f\u305b\u3066\u3044\u308b\u306e\u3067\u3059\u3002<!-- notionvc: ff95d6c2-edfb-41d3-b7f5-4ffeb2d548c9 --><\/p>\r\n<b><!-- notionvc: a4ba5bb2-19ee-4f14-b5d4-63bcdd6842d3 --><\/b>\r\n<p><!-- notionvc: 3470bd4f-c791-435a-94b0-7ab1f97e052a --><\/p>\n\n<h2>\u6700\u65b0\u306e\u30d7\u30ed\u30bb\u30b9\u3068\u5f37\u5316\u3055\u308c\u305f\u624b\u6cd5<\/h2>\n<b>\u6539\u826f\u3055\u308c\u305fLazyFrame\uff082025\uff09<\/b>\r\n<p>Polars\u306eLazyFrame\u306f\u3001\u30af\u30a8\u30ea\u5168\u4f53\u3092\u6700\u9069\u5316\u3057\u3066\u304b\u3089\u5b9f\u884c\u3059\u308b\u3053\u3068\u3067\u3001\u4e2d\u9593\u51e6\u7406\u306e\u56de\u907f\u3084I\/O\u306e\u6700\u5c0f\u5316\u3092\u56f3\u308a\u307e\u3059\u30022025\u5e74\u306e\u30a2\u30c3\u30d7\u30c7\u30fc\u30c8\u3067\u306f\u3001\u4ee5\u4e0b\u304c\u5f37\u5316\u3055\u308c\u307e\u3057\u305f\uff1a<\/p>\r\n<ul>\r\n\t<li><strong>Predicate Pushdown\u306e\u5f37\u5316<\/strong>\uff1a\u30d5\u30a3\u30eb\u30bf\u30fc\u51e6\u7406\u3092\u3088\u308a\u65e9\u671f\u306b\u5b9f\u884c<\/li>\r\n\t<li><strong>Join\u30aa\u30d7\u30c6\u30a3\u30de\u30a4\u30bc\u30fc\u30b7\u30e7\u30f3<\/strong>\uff1a\u591a\u6bb5\u968eJoin\u306e\u81ea\u52d5\u518d\u69cb\u6210<\/li>\r\n\t<li><strong>User-defined functions (UDF)<\/strong> \u306e\u30b5\u30dd\u30fc\u30c8\u5f37\u5316<\/li>\r\n<\/ul>\r\n<b>Streaming\u30e2\u30fc\u30c9\uff08v0.39\u4ee5\u964d\uff09<\/b>\r\n<p>\u5de8\u5927\u306a\u30c7\u30fc\u30bf\u3092\u30c1\u30e3\u30f3\u30af\u3054\u3068\u306b\u51e6\u7406\u3067\u304d\u308bStreaming\u30e2\u30fc\u30c9\u306f\u30012025\u5e74\u306b\u4e0b\u8a18\u306e\u6a5f\u80fd\u304c\u8ffd\u52a0\u30fb\u6539\u5584\u3055\u308c\u307e\u3057\u305f\uff1a<\/p>\r\n<ul>\r\n\t<li><code>scan_csv<\/code> \u3084 <code>scan_parquet<\/code> \u306eStreaming\u5bfe\u5fdc<\/li>\r\n\t<li>Lazy\u30af\u30a8\u30ea\u3078\u306eStreaming\u9069\u7528\u304c\u5bb9\u6613\u306b<\/li>\r\n\t<li>\u30c7\u30fc\u30bf\u30d5\u30ed\u30fc\u306e\u53ef\u8996\u5316\u3084\u30c7\u30d0\u30c3\u30b0\u6a5f\u80fd\u306e\u8ffd\u52a0<\/li>\r\n<\/ul>\r\n<p><!-- notionvc: fa159c1c-514e-4ea1-a27c-609db2b66cca --><\/p>\n\n<h2>Polars\u306e\u5fdc\u7528\u5206\u91ce\u3068\u5b9f\u52d9\u5229\u7528<\/h2>\n<b>\u30b9\u30b1\u30fc\u30e9\u30d6\u30eb\u306aETL\u51e6\u7406<\/b>\r\n<p>Polars\u306fETL\uff08Extract, Transform, Load\uff09\u30d1\u30a4\u30d7\u30e9\u30a4\u30f3\u3067\u6d3b\u8e8d\u3057\u307e\u3059\u3002\u7279\u306b\u30c7\u30fc\u30bf\u30af\u30ec\u30f3\u30b8\u30f3\u30b0\u3084\u5909\u63db\u51e6\u7406\u3067\u306f\u3001LazyFrame\u3068Streaming\u306e\u4f75\u7528\u306b\u3088\u308a\u5287\u7684\u306a\u901f\u5ea6\u5411\u4e0a\u304c\u898b\u3089\u308c\u307e\u3059\u3002<\/p>\r\n<b>BI\u3084\u30ec\u30dd\u30fc\u30c8\u751f\u6210<\/b>\r\n<p>SQL\u30e9\u30a4\u30af\u306a\u30af\u30a8\u30ea\u69cb\u6587\u3001\u4e26\u5217GroupBy\u51e6\u7406\u3001\u5217\u9078\u629e\u306e\u6700\u9069\u5316\u306b\u3088\u308a\u3001\u5f93\u6765\u306eBI\u51e6\u7406\u3088\u308a\u3082\u6570\u500d\u901f\u3044\u51e6\u7406\u304c\u53ef\u80fd\u3067\u3059\u3002<\/p>\r\n<b>\u6a5f\u68b0\u5b66\u7fd2\u5411\u3051\u524d\u51e6\u7406<\/b>\r\n<p>\u5927\u91cf\u306e\u7279\u5fb4\u91cf\u751f\u6210\u3084\u6b20\u640d\u5024\u51e6\u7406\u3082\u52b9\u7387\u7684\u306b\u5b9f\u65bd\u53ef\u80fd\u3067\u3059\u3002\u7279\u306b\u3001\u30c7\u30fc\u30bf\u91cf\u304c\u591a\u3044\u30d9\u30fc\u30b9\u30e9\u30a4\u30f3\u51e6\u7406\u3084\u6559\u5e2b\u30c7\u30fc\u30bf\u306e\u6574\u5f62\u306b\u9069\u3057\u3066\u3044\u307e\u3059\u3002<!-- notionvc: d77f0219-cf82-48aa-a830-b23672fd1b40 --><\/p>\r\n<p><!-- notionvc: 2332660f-9f18-4e75-ab62-6bf65a50da6a --><\/p>\n\n<h2>\u30e1\u30ea\u30c3\u30c8\u30fb\u30c7\u30e1\u30ea\u30c3\u30c8<\/h2>\n<b>\u30e1\u30ea\u30c3\u30c8<\/b>\r\n<ul>\r\n\t<li><strong>\u6700\u65b0\u30aa\u30d7\u30c6\u30a3\u30de\u30a4\u30b6<\/strong>: \u8907\u96d1\u306a\u30af\u30a8\u30ea\u3082\u52b9\u7387\u7684\u306b\u518d\u69cb\u6210\u53ef\u80fd<\/li>\r\n\t<li><strong>\u62e1\u5f35\u6027<\/strong>: Rust\u30b3\u30fc\u30c9\u306b\u76f4\u63a5\u30a2\u30af\u30bb\u30b9\u3067\u304d\u308b\u305f\u3081\u3001\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3092\u3055\u3089\u306b\u30ab\u30b9\u30bf\u30e0\u53ef\u80fd<\/li>\r\n\t<li><strong>\u30e6\u30cb\u30d0\u30fc\u30b5\u30eb\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u5bfe\u5fdc<\/strong>: CSV, Parquet, IPC, JSON\u306a\u3069\u8c4a\u5bcc\u306a\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u3092\u9ad8\u901f\u3067\u51e6\u7406<\/li>\r\n<\/ul>\r\n<b>\u30c7\u30e1\u30ea\u30c3\u30c8<\/b>\r\n<ul>\r\n\t<li><strong>\u30b9\u30c6\u30c3\u30d7\u5b66\u7fd2<\/strong>: \u9ad8\u5ea6\u306a\u6700\u9069\u5316\u6a5f\u80fd\u3092\u6d3b\u304b\u3059\u306b\u306fPolars\u72ec\u81ea\u69cb\u6587\u306e\u7406\u89e3\u304c\u5fc5\u8981<\/li>\r\n\t<li><strong>\u30a8\u30b3\u30b7\u30b9\u30c6\u30e0\u4f9d\u5b58<\/strong>: \u30b5\u30fc\u30c9\u30d1\u30fc\u30c6\u30a3\u88fd\u3068\u306e\u7d71\u5408\u306fPandas\u306b\u6bd4\u3079\u3066\u3084\u3084\u9650\u5b9a\u7684<\/li>\r\n\t<li><strong>Visual\u5316\u6a5f\u80fd\u306e\u975e\u642d\u8f09<\/strong>: \u53ef\u8996\u5316\u306b\u306f\u5916\u90e8\u30e9\u30a4\u30d6\u30e9\u30ea\u304c\u5fc5\u9808\uff08\u4f8b\uff1aPlotly\u3001Altair\uff09<\/li>\r\n<\/ul>\r\n<p><!-- notionvc: fb78787f-e9ca-4dcb-a812-dd96b8c31e38 --><\/p>\n\n<h2>Polars\u306e\u5c06\u6765\u5c55\u671b<\/h2>\n<b>Polars\u306e\u30a8\u30b3\u30b7\u30b9\u30c6\u30e0\u9032\u5316<\/b>\r\n<ul>\r\n\t<li><strong>Polars-Notebook<\/strong>: \u958b\u767a\u4e2d\u306eJupyter\u7d71\u5408\u652f\u63f4\u30c4\u30fc\u30eb<\/li>\r\n\t<li><strong>WebAssembly\u5bfe\u5fdc\uff08\u691c\u8a0e\u4e2d\uff09<\/strong>: \u30d6\u30e9\u30a6\u30b6\u30d9\u30fc\u30b9\u306e\u30c7\u30fc\u30bf\u51e6\u7406\u304c\u53ef\u80fd\u306b\uff1f<\/li>\r\n\t<li><strong>GPU\u30b5\u30dd\u30fc\u30c8\uff08\u8b70\u8ad6\u6bb5\u968e\uff09<\/strong>: CUDA\u3084Arrow\u3068\u306e\u63a5\u7d9a\u6027\u306b\u3088\u308a\u3055\u3089\u306a\u308b\u9ad8\u901f\u5316\u304c\u671f\u5f85<\/li>\r\n<\/ul>\r\n<b>\u30c7\u30fc\u30bf\u30a8\u30f3\u30b8\u30cb\u30a2\u30ea\u30f3\u30b0\u306e\u4e2d\u5fc3\u306b<\/b>\r\n<p>2025\u5e74\u73fe\u5728\u3001Polars\u306f\u3059\u3067\u306b\u591a\u304f\u306eETL\u57fa\u76e4\u3084\u30ed\u30b0\u5206\u6790\u30b7\u30b9\u30c6\u30e0\u306b\u5c0e\u5165\u3055\u308c\u3066\u304a\u308a\u3001\u30c7\u30fc\u30bf\u57fa\u76e4\u306e\u4e3b\u8981\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3068\u3057\u3066\u6025\u6210\u9577\u4e2d\u3067\u3059\u3002<!-- notionvc: ed08fe3d-a7d3-467e-b731-c466b31eba61 --><\/p>\r\n<p><!-- notionvc: 5dc9f376-c912-44ab-89aa-8afcd4355f5a 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\/>\r\n<!-- notionvc: bc455dc9-b2d4-4fae-b816-19f9b7d7dbeb --><\/p>","protected":false},"excerpt":{"rendered":"<p>Polars\u306e\u57fa\u672c\u304b\u3089\u6700\u65b0\u306e\u30a2\u30c3\u30d7\u30c7\u30fc\u30c8\uff082025\u5e74\uff09\u3001\u5f37\u5316\u3055\u308c\u305fLazyFrame\u30fbStreaming\u306e\u6a5f\u80fd\u3001\u5b9f\u8df5\u6d3b\u7528\u4f8b\u307e\u3067\u7db2\u7f85\u7684\u306b\u89e3\u8aac\u3002\u4eca\u5f8c\u306e\u9032\u5316\u306b\u3082\u6ce8\u76ee\u3057\u3001Python\u30e6\u30fc\u30b6\u30fc\u3084\u30c7\u30fc\u30bf\u30a8\u30f3\u30b8\u30cb\u30a2\u306b\u3068\u3063\u3066\u306e\u4fa1\u5024\u3092\u518d\u767a [&hellip;]<\/p>\n","protected":false},"author":22,"featured_media":6014,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"content-type":"","swell_btn_cv_data":"","footnotes":"","_wp_rev_ctl_limit":""},"categories":[1249],"tags":[1008,813,1005,1007,1006],"class_list":["post-6010","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-knowledge","tag-lazyframe","tag-polars","tag-python","tag-rust","tag-1006"],"_links":{"self":[{"href":"https:\/\/since2020.jp\/media\/wp-json\/wp\/v2\/posts\/6010","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/since2020.jp\/media\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/since2020.jp\/media\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/since2020.jp\/media\/wp-json\/wp\/v2\/users\/22"}],"replies":[{"embeddable":true,"href":"https:\/\/since2020.jp\/media\/wp-json\/wp\/v2\/comments?post=6010"}],"version-history":[{"count":0,"href":"https:\/\/since2020.jp\/media\/wp-json\/wp\/v2\/posts\/6010\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/since2020.jp\/media\/wp-json\/wp\/v2\/media\/6014"}],"wp:attachment":[{"href":"https:\/\/since2020.jp\/media\/wp-json\/wp\/v2\/media?parent=6010"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/since2020.jp\/media\/wp-json\/wp\/v2\/categories?post=6010"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/since2020.jp\/media\/wp-json\/wp\/v2\/tags?post=6010"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}