{"id":2040,"date":"2023-06-22T06:51:18","date_gmt":"2023-06-21T22:51:18","guid":{"rendered":"http:\/\/viplao.com\/?p=2040"},"modified":"2023-06-22T06:51:39","modified_gmt":"2023-06-21T22:51:39","slug":"flink-sql-%e5%9c%a8%e5%bf%ab%e6%89%8b%e7%9a%84%e6%89%a9%e5%b1%95%e5%92%8c%e5%ae%9e%e8%b7%b5","status":"publish","type":"post","link":"http:\/\/viplao.com\/index.php\/2023\/06\/22\/flink-sql-%e5%9c%a8%e5%bf%ab%e6%89%8b%e7%9a%84%e6%89%a9%e5%b1%95%e5%92%8c%e5%ae%9e%e8%b7%b5\/","title":{"rendered":"Flink SQL &#8211; \u5728\u5feb\u624b\u7684\u6269\u5c55\u548c\u5b9e\u8df5"},"content":{"rendered":"\n<ol>\n<li>Flink SQL \u5728\u5feb\u624b<\/li>\n\n\n\n<li>\u529f\u80fd\u6269\u5c55<\/li>\n\n\n\n<li>\u6027\u80fd\u4f18\u5316<\/li>\n\n\n\n<li>\u7a33\u5b9a\u6027\u63d0\u5347<\/li>\n\n\n\n<li>\u672a\u6765\u5c55\u671b<\/li>\n<\/ol>\n\n\n\n<p><strong><a href=\"https:\/\/link.zhihu.com\/?target=https%3A\/\/flink-learning.org.cn\/activity\/detail\/86f361bb9b45af31f0c24feb953fbbbb\" target=\"_blank\" rel=\"noreferrer noopener\">FFA 2021 \u76f4\u64ad\u56de\u653e &amp; \u6f14\u8bb2 PDF \u4e0b\u8f7d<\/a><\/strong><\/p>\n\n\n\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_71 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">\u6587\u7ae0\u76ee\u5f55<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" 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\u5728\u5feb\u624b<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"http:\/\/viplao.com\/index.php\/2023\/06\/22\/flink-sql-%e5%9c%a8%e5%bf%ab%e6%89%8b%e7%9a%84%e6%89%a9%e5%b1%95%e5%92%8c%e5%ae%9e%e8%b7%b5\/#%E4%BA%8C%E3%80%81%E5%8A%9F%E8%83%BD%E6%89%A9%E5%B1%95\" title=\"\u4e8c\u3001\u529f\u80fd\u6269\u5c55\">\u4e8c\u3001\u529f\u80fd\u6269\u5c55<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"http:\/\/viplao.com\/index.php\/2023\/06\/22\/flink-sql-%e5%9c%a8%e5%bf%ab%e6%89%8b%e7%9a%84%e6%89%a9%e5%b1%95%e5%92%8c%e5%ae%9e%e8%b7%b5\/#21_Group_Window_Aggregate_%E6%89%A9%E5%B1%95\" title=\"2.1 Group Window Aggregate \u6269\u5c55\">2.1 Group Window Aggregate \u6269\u5c55<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"http:\/\/viplao.com\/index.php\/2023\/06\/22\/flink-sql-%e5%9c%a8%e5%bf%ab%e6%89%8b%e7%9a%84%e6%89%a9%e5%b1%95%e5%92%8c%e5%ae%9e%e8%b7%b5\/#211_%E6%94%AF%E6%8C%81%E5%A4%9A%E7%BB%B4%E5%88%86%E6%9E%90\" title=\"2.1.1 \u652f\u6301\u591a\u7ef4\u5206\u6790\">2.1.1 \u652f\u6301\u591a\u7ef4\u5206\u6790<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"http:\/\/viplao.com\/index.php\/2023\/06\/22\/flink-sql-%e5%9c%a8%e5%bf%ab%e6%89%8b%e7%9a%84%e6%89%a9%e5%b1%95%e5%92%8c%e5%ae%9e%e8%b7%b5\/#212_%E5%BC%95%E5%85%A5%E9%AB%98%E9%98%B6%E7%AA%97%E5%8F%A3%E5%87%BD%E6%95%B0\" title=\"2.1.2 \u5f15\u5165\u9ad8\u9636\u7a97\u53e3\u51fd\u6570\">2.1.2 \u5f15\u5165\u9ad8\u9636\u7a97\u53e3\u51fd\u6570<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"http:\/\/viplao.com\/index.php\/2023\/06\/22\/flink-sql-%e5%9c%a8%e5%bf%ab%e6%89%8b%e7%9a%84%e6%89%a9%e5%b1%95%e5%92%8c%e5%ae%9e%e8%b7%b5\/#22_Window_Table-valued_Function_%E6%89%A9%E5%B1%95\" title=\"2.2 Window Table-valued Function \u6269\u5c55\">2.2 Window Table-valued Function \u6269\u5c55<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"http:\/\/viplao.com\/index.php\/2023\/06\/22\/flink-sql-%e5%9c%a8%e5%bf%ab%e6%89%8b%e7%9a%84%e6%89%a9%e5%b1%95%e5%92%8c%e5%ae%9e%e8%b7%b5\/#221_%E4%B8%B0%E5%AF%8C_Window_TVF_%E7%AE%97%E5%AD%90\" title=\"2.2.1 \u4e30\u5bcc Window TVF \u7b97\u5b50\">2.2.1 \u4e30\u5bcc Window TVF \u7b97\u5b50<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"http:\/\/viplao.com\/index.php\/2023\/06\/22\/flink-sql-%e5%9c%a8%e5%bf%ab%e6%89%8b%e7%9a%84%e6%89%a9%e5%b1%95%e5%92%8c%e5%ae%9e%e8%b7%b5\/#222_%E6%94%AF%E6%8C%81_Window_Offset\" title=\"2.2.2 \u652f\u6301 Window Offset\">2.2.2 \u652f\u6301 Window Offset<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"http:\/\/viplao.com\/index.php\/2023\/06\/22\/flink-sql-%e5%9c%a8%e5%bf%ab%e6%89%8b%e7%9a%84%e6%89%a9%e5%b1%95%e5%92%8c%e5%ae%9e%e8%b7%b5\/#223_%E6%94%AF%E6%8C%81_Batch_Mode\" title=\"2.2.3 \u652f\u6301 Batch Mode\">2.2.3 \u652f\u6301 Batch Mode<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"http:\/\/viplao.com\/index.php\/2023\/06\/22\/flink-sql-%e5%9c%a8%e5%bf%ab%e6%89%8b%e7%9a%84%e6%89%a9%e5%b1%95%e5%92%8c%e5%ae%9e%e8%b7%b5\/#%E4%B8%89%E3%80%81%E6%80%A7%E8%83%BD%E4%BC%98%E5%8C%96\" title=\"\u4e09\u3001\u6027\u80fd\u4f18\u5316\">\u4e09\u3001\u6027\u80fd\u4f18\u5316<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"http:\/\/viplao.com\/index.php\/2023\/06\/22\/flink-sql-%e5%9c%a8%e5%bf%ab%e6%89%8b%e7%9a%84%e6%89%a9%e5%b1%95%e5%92%8c%e5%ae%9e%e8%b7%b5\/#31_%E8%81%9A%E5%90%88%E4%B8%8A%E7%9A%84%E7%8A%B6%E6%80%81%E4%BC%98%E5%8C%96\" title=\"3.1 \u805a\u5408\u4e0a\u7684\u72b6\u6001\u4f18\u5316\">3.1 \u805a\u5408\u4e0a\u7684\u72b6\u6001\u4f18\u5316<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"http:\/\/viplao.com\/index.php\/2023\/06\/22\/flink-sql-%e5%9c%a8%e5%bf%ab%e6%89%8b%e7%9a%84%e6%89%a9%e5%b1%95%e5%92%8c%e5%ae%9e%e8%b7%b5\/#32_%E7%BB%B4%E8%A1%A8%E5%85%B3%E8%81%94%E7%9A%84%E6%94%92%E6%89%B9%E4%BC%98%E5%8C%96\" title=\"3.2 \u7ef4\u8868\u5173\u8054\u7684\u6512\u6279\u4f18\u5316\">3.2 \u7ef4\u8868\u5173\u8054\u7684\u6512\u6279\u4f18\u5316<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"http:\/\/viplao.com\/index.php\/2023\/06\/22\/flink-sql-%e5%9c%a8%e5%bf%ab%e6%89%8b%e7%9a%84%e6%89%a9%e5%b1%95%e5%92%8c%e5%ae%9e%e8%b7%b5\/#%E5%9B%9B%E3%80%81%E7%A8%B3%E5%AE%9A%E6%80%A7%E6%8F%90%E5%8D%87\" title=\"\u56db\u3001\u7a33\u5b9a\u6027\u63d0\u5347\">\u56db\u3001\u7a33\u5b9a\u6027\u63d0\u5347<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"http:\/\/viplao.com\/index.php\/2023\/06\/22\/flink-sql-%e5%9c%a8%e5%bf%ab%e6%89%8b%e7%9a%84%e6%89%a9%e5%b1%95%e5%92%8c%e5%ae%9e%e8%b7%b5\/#41_Group_Window_Aggregate_%E7%9A%84%E6%95%B0%E6%8D%AE%E5%80%BE%E6%96%9C\" title=\"4.1 Group Window Aggregate \u7684\u6570\u636e\u503e\u659c\">4.1 Group Window Aggregate \u7684\u6570\u636e\u503e\u659c<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"http:\/\/viplao.com\/index.php\/2023\/06\/22\/flink-sql-%e5%9c%a8%e5%bf%ab%e6%89%8b%e7%9a%84%e6%89%a9%e5%b1%95%e5%92%8c%e5%ae%9e%e8%b7%b5\/#42_Aggregate_State_%E5%85%BC%E5%AE%B9\" title=\"4.2 Aggregate State \u517c\u5bb9\">4.2 Aggregate State \u517c\u5bb9<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-16\" href=\"http:\/\/viplao.com\/index.php\/2023\/06\/22\/flink-sql-%e5%9c%a8%e5%bf%ab%e6%89%8b%e7%9a%84%e6%89%a9%e5%b1%95%e5%92%8c%e5%ae%9e%e8%b7%b5\/#%E4%BA%94%E3%80%81%E6%9C%AA%E6%9D%A5%E5%B1%95%E6%9C%9B\" title=\"\u4e94\u3001\u672a\u6765\u5c55\u671b\">\u4e94\u3001\u672a\u6765\u5c55\u671b<\/a><\/li><\/ul><\/nav><\/div>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E4%B8%80%E3%80%81Flink_SQL_%E5%9C%A8%E5%BF%AB%E6%89%8B\"><\/span>\u4e00\u3001Flink SQL \u5728\u5feb\u624b<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/pic4.zhimg.com\/80\/v2-abd9d15d2fa9186e6b1f017380c45f83_720w.webp\" alt=\"\"\/><\/figure>\n\n\n\n<p>\u7ecf\u8fc7\u4e00\u5e74\u591a\u7684\u63a8\u5e7f\uff0c\u5feb\u624b\u5185\u90e8\u7528\u6237\u5bf9 Flink SQL \u7684\u8ba4\u53ef\u5ea6\u9010\u6e10\u63d0\u9ad8\uff0c\u4eca\u5e74\u65b0\u589e\u7684 Flink \u4f5c\u4e1a\u4e2d\uff0cSQL \u4f5c\u4e1a\u8fbe\u5230\u4e86 60%\uff0c\u4e0e\u53bb\u5e74\u76f8\u6bd4\u6709\u4e86\u4e00\u500d\u7684\u63d0\u5347\uff0c\u5cf0\u503c\u541e\u5410\u8fbe\u5230\u4e86 6 \u4ebf\u6761\/\u79d2\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E4%BA%8C%E3%80%81%E5%8A%9F%E8%83%BD%E6%89%A9%E5%B1%95\"><\/span>\u4e8c\u3001\u529f\u80fd\u6269\u5c55<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>\u4e3a\u4e86\u652f\u6301\u5185\u90e8\u7684\u4e1a\u52a1\u9700\u6c42\uff0c\u5feb\u624b\u505a\u4e86\u5f88\u591a\u529f\u80fd\u6269\u5c55\uff0c\u672c\u6587\u91cd\u70b9\u5206\u4eab\u5176\u4e2d\u7684\u4e24\u4e2a\u56f4\u7ed5\u7a97\u53e3\u7684\u6269\u5c55\uff0c\u4e00\u4e2a\u662f Group Window Aggregate \u6269\u5c55\uff0c\u4e00\u4e2a\u662f\u5728 Flip-145 \u91cc\u63d0\u51fa\u7684 Window Table-valued Function \u6269\u5c55\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/pic4.zhimg.com\/80\/v2-c071b3fab851515e7f64fa3984a12e7f_720w.webp\" alt=\"\"\/><\/figure>\n\n\n\n<p>\u89e3\u91ca\u4e00\u4e0b\u4ee5\u4e0a\u4e24\u8005\u7684\u533a\u522b\u548c\u8054\u7cfb\uff1a<\/p>\n\n\n\n<ul>\n<li>Group Window Aggregate \u662f\u5728 Flink 1.12 \u548c\u66f4\u65e9\u7684\u7248\u672c\u91cc\u7528\u6765\u505a\u7a97\u53e3\u805a\u5408\u7684\uff0c\u5b83\u6709\u4e24\u4e2a\u5c40\u9650\u6027\uff0c\u7b2c\u4e00\u4e2a\u662f\u5b83\u7684\u8bed\u6cd5\u4e0d\u7b26\u5408 SQL \u6807\u51c6\uff0c\u8981\u501f\u52a9\u7279\u6b8a\u7684\u7a97\u53e3\u51fd\u6570\uff0c\u8fd8\u8981\u914d\u5408\u7a97\u53e3\u8f85\u52a9\u51fd\u6570\u6765\u5b8c\u6210\u4f5c\u4e1a\u805a\u5408\u3002\u53e6\u5916\u5b83\u8fd8\u9650\u5236\u4e86\u7a97\u53e3\u51fd\u6570\u53ea\u80fd\u51fa\u73b0\u5728 group by \u7684\u5b50\u53e5\u91cc\u9762\uff0c\u6240\u4ee5\u53ea\u80fd\u7528\u4e8e\u805a\u5408\uff1b<\/li>\n\n\n\n<li>\u56e0\u6b64 Flink \u5728 Flip-145 \u91cc\u63d0\u51fa\u4e86 Window TVF\uff0c\u5b83\u662f\u57fa\u4e8e 2017 \u5e74\u7684 SQL \u6807\u51c6\u91cc\u63d0\u51fa\u7684\u591a\u6001\u8868\u51fd\u6570\u7684\u8bed\u6cd5\uff0c\u53e6\u5916\u5b83\u9664\u4e86\u53ef\u4ee5\u5728\u7a97\u53e3\u4e0a\u505a\u805a\u5408\uff0c\u8fd8\u53ef\u4ee5\u505a\u7a97\u53e3\u5173\u8054\uff0cTopN \u548c\u53bb\u91cd\u7b49\u64cd\u4f5c\u3002<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"21_Group_Window_Aggregate_%E6%89%A9%E5%B1%95\"><\/span>2.1 Group Window Aggregate \u6269\u5c55<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>\u5927\u5bb6\u53ef\u80fd\u4f1a\u95ee\uff0c\u65e2\u7136\u5df2\u7ecf\u6709 Window TVF \u4e86\uff0c\u4e3a\u4ec0\u4e48\u8fd8\u8981\u5728 Group Window Aggregate \u4e0a\u505a\u529f\u80fd\u6269\u5c55\u5462\uff1f\u56e0\u4e3a\u5feb\u624b\u662f\u5728\u4eca\u5e74\u4e0b\u534a\u5e74\u624d\u5f00\u59cb\u8fdb\u884c\u7248\u672c 1.10 \u5230 1.13 \u7684\u5347\u7ea7\uff0c\u5927\u90e8\u5206\u4e1a\u52a1\u8fd8\u662f\u5728\u4f7f\u7528 1.10 \u7248\u672c\u3002<\/p>\n\n\n\n<p>\u5728 Group Window Aggregate \u4e0a\u5feb\u624b\u505a\u4e86\u4e24\u4e2a\u6269\u5c55\uff0c\u4e00\u4e2a\u662f\u652f\u6301\u591a\u7ef4\u805a\u5408\uff0c\u4e00\u4e2a\u662f\u5f15\u5165\u9ad8\u9636\u7a97\u53e3\u51fd\u6570\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"211_%E6%94%AF%E6%8C%81%E5%A4%9A%E7%BB%B4%E5%88%86%E6%9E%90\"><\/span>2.1.1 \u652f\u6301\u591a\u7ef4\u5206\u6790<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/pic2.zhimg.com\/80\/v2-8cbc41664b63f18082aa8621c2645135_720w.webp\" alt=\"\"\/><\/figure>\n\n\n\n<p>Flink SQL \u5f88\u65e9\u5c31\u652f\u6301\u65e0\u9650\u6d41\u4e0a\u7684\u591a\u7ef4\u805a\u5408\uff0c\u5feb\u624b\u5728 Group Window Aggregate \u4e0a\u4e5f\u589e\u52a0\u4e86\u591a\u7ef4\u5206\u6790\u7684\u529f\u80fd\uff0c\u652f\u6301\u6807\u51c6\u7684 Grouping Sets\u3001Rollup \u548c CUBE \u5b50\u53e5\uff0c\u53e6\u5916\u8fd8\u652f\u6301\u5404\u79cd\u7a97\u53e3\u7c7b\u578b\uff0c\u6bd4\u5982\u6eda\u52a8\u3001\u6ed1\u52a8\u3001\u4f1a\u8bdd\u7a97\u53e3\u7b49\u3002<\/p>\n\n\n\n<p>\u6bd4\u5982\u4e0a\u56fe\u5b9e\u4f8b\uff0c\u9700\u8981\u7edf\u8ba1\u4e3b\u9898\u7ef4\u5ea6\u548c\u603b\u7ef4\u5ea6\u4e0b\u7684\u7d2f\u8ba1 UV\uff0cSQL \u7684 group by \u5b50\u53e5\u91cc\u5305\u542b\u4e24\u90e8\u5206\uff1a\u4e00\u4e2a\u662f CUMULATE \u7a97\u53e3\u51fd\u6570\uff0c\u4e00\u4e2a\u662f Grouping Sets \u5b50\u53e5\u3002\u62ec\u53f7\u91cc\u6709\u4e24\u4e2a\u5143\u7d20\uff1a\u4e00\u4e2a\u8868\u793a\u603b\u7ef4\u5ea6\uff0c\u4e00\u4e2a\u8868\u793a\u4e3b\u9898\u7ef4\u5ea6\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"212_%E5%BC%95%E5%85%A5%E9%AB%98%E9%98%B6%E7%AA%97%E5%8F%A3%E5%87%BD%E6%95%B0\"><\/span>2.1.2 \u5f15\u5165\u9ad8\u9636\u7a97\u53e3\u51fd\u6570<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/pic2.zhimg.com\/80\/v2-5d5dbe0e52097833bc04fab30962cf55_720w.webp\" alt=\"\"\/><\/figure>\n\n\n\n<p>\u6570\u636e\u5206\u6790\u7684\u5f00\u53d1\u8005\u7ecf\u5e38\u4f1a\u9047\u5230\u8fd9\u6837\u7684\u9700\u6c42\uff0c\u7ed8\u5236\u4e00\u6761\u66f2\u7ebf\uff0c\u6bcf\u4e2a\u70b9\u7684\u542b\u4e49\u662f\u5f53\u5929 0 \u70b9\u5230\u5f53\u524d\u65f6\u95f4\u70b9\u7684\u7d2f\u8ba1\u6307\u6807\uff0c\u6a2a\u5750\u6807\u8868\u793a\u65f6\u95f4\uff0c\u7eb5\u5750\u6807\u662f\u8868\u793a\u7d2f\u8ba1\u7684\u6307\u6807\u3002\u5bf9\u8fd9\u6837\u7684\u9700\u6c42\u53ef\u4ee5\u6709\u4e24\u4e2a\u89e3\u51b3\u65b9\u6848\uff1a<\/p>\n\n\n\n<ul>\n<li>\u7b2c\u4e00\u4e2a\u65b9\u6848\u662f\u4f7f\u7528\u65e0\u9650\u6d41\u805a\u5408\uff0c\u628a\u65f6\u95f4\u5f52\u4e00\u5230\u5206\u949f\u7c92\u5ea6\u4ee5\u540e\u4f5c\u4e3a group key \u7684\u4e00\u5217\uff0c\u4f46\u662f\u4e1a\u52a1\u4e0a\u8981\u6c42\u8f93\u51fa\u5230\u5c4f\u5e55\u4e0a\u7684\u66f2\u7ebf\u4e0d\u518d\u53d8\u5316\uff0c\u800c\u65e0\u9650\u6d41\u805a\u5408\u7684\u8f93\u51fa\u7ed3\u679c\u662f\u4e00\u4e2a\u66f4\u65b0\u6d41\uff0c\u6240\u4ee5\u4e0d\u7b26\u5408\u8981\u6c42\u3002<\/li>\n\n\n\n<li>\u7b2c\u4e8c\u4e2a\u65b9\u6848\u662f\u4f7f\u7528\u4e00\u5929\u7684\u6eda\u52a8\u7a97\u53e3\u51fd\u6570\u3002\u4e3a\u4e86\u63d0\u524d\u8f93\u51fa\u7ed3\u679c\uff0c\u8fd8\u662f\u8981\u8bbe\u7f6e\u63d0\u524d\u89e6\u53d1\uff0c\u65f6\u95f4\u70b9\u9009\u7528\u5f53\u524d\u673a\u5668\u7684\u65f6\u95f4\u6216\u8005\u662f\u5386\u53f2\u8f93\u5165\u6570\u636e\u91cc\u6700\u5927\u7684\u65f6\u95f4\u6233\u3002\u8fd9\u4e2a\u65b9\u6848\u7684\u7f3a\u70b9\uff0c\u9996\u5148\u662f\u6bcf\u4e2a\u70b9\u7684\u7eb5\u5750\u6807\u7684\u503c\u5e76\u4e0d\u662f\u8fd9\u4e2a\u65f6\u95f4\u70b9\u4e0a\u7684\u7d2f\u8ba1\u503c\u3002\u8fd9\u4f1a\u5bfc\u81f4\u51e0\u4e2a\u5f02\u5e38\u73b0\u8c61\uff0c\u6bd4\u5982\u4f5c\u4e1a\u5931\u8d25\u91cd\u542f\u6216\u8005\u662f\u4e1a\u52a1\u4e3b\u52a8\u56de\u6eaf\u5386\u53f2\u7684\u65f6\u5019\uff0c\u4e0d\u80fd\u5b8c\u5168\u8fd8\u539f\u5f53\u65f6\u7684\u5386\u53f2\u66f2\u7ebf\u3002\u800c\u4e14\u5404\u4e2a\u70b9\u4e0a\u5206\u7ef4\u5ea6\u7684\u7d2f\u8ba1\u503c\u52a0\u8d77\u6765\u4e5f\u4e0d\u7b49\u4e8e\u603b\u7ef4\u5ea6\u7684\u503c\u3002\u8fd8\u6709\u4e00\u4e2a\u7f3a\u70b9\uff0c\u7edf\u8ba1 UV \u7684\u65f6\u5019\uff0c\u6211\u4eec\u7ecf\u5e38\u4f1a\u4f7f\u7528\u4e24\u9636\u6bb5\u7684\u805a\u5408\u6765\u907f\u514d distinct key \u7684\u503e\u659c\uff0c\u4f46\u662f\u4f7f\u7528\u8fd9\u4e2a\u65b9\u6848\u7684\u65f6\u5019\uff0c\u539f\u672c\u81ea\u8eab\u7684\u66f2\u7ebf\u4e0a\u53ef\u80fd\u4f1a\u51fa\u73b0\u51f9\u5751\u3002<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/pic1.zhimg.com\/80\/v2-fb107a028594a7c39ad090681c0706f4_720w.webp\" alt=\"\"\/><\/figure>\n\n\n\n<p>\u4e0a\u56fe\u662f\u65b9\u6848\u4e8c\u5bfc\u81f4\u7684\u4e00\u4e9b\u5f02\u5e38\u66f2\u7ebf\uff1a<\/p>\n\n\n\n<ul>\n<li>\u7b2c\u4e00\u4e2a\u66f2\u7ebf\u662f\u8fdb\u884c\u5386\u53f2\u56de\u6eaf\uff0c lag \u6d88\u9664\u4ee5\u540e\u66f2\u7ebf\u624d\u5f00\u59cb\u6b63\u5e38\uff0c\u5728\u6ca1\u6709\u5b8c\u5168\u6d88\u9664 lag \u7684\u65f6\u5019\uff0c\u66f2\u7ebf\u662f\u4e0d\u5e73\u6ed1\u7684\uff0c\u800c\u4e14\u4e0d\u80fd\u8fd8\u539f\u5386\u53f2\u66f2\u7ebf\u3002<\/li>\n\n\n\n<li>\u7b2c\u4e8c\u4e2a\u66f2\u7ebf\u662f\u81ea\u589e\u66f2\u7ebf\u4e0a\u51fa\u73b0\u51f9\u5751\u3002<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/pic4.zhimg.com\/80\/v2-21fd9d03696a058435a5cc0bfa932577_720w.webp\" alt=\"\"\/><\/figure>\n\n\n\n<p>\u56e0\u4e3a\u7b2c\u4e00\u7ea7\u805a\u5408\u7684\u8f93\u51fa\u6d41\u662f\u4e00\u4e2a\u66f4\u65b0\u6d41\uff0cFlink \u76ee\u524d\u7684\u66f4\u65b0\u673a\u5236\u662f\u53d1\u9001\u64a4\u56de\u548c\u66f4\u65b0\u4e24\u6761\u72ec\u7acb\u7684\u6d88\u606f\uff0c\u800c\u4e0d\u662f\u4e00\u4e2a\u539f\u5b50\u6d88\u606f\uff0c\u6240\u4ee5\u7b2c\u4e8c\u4e2a\u805a\u5408\u53ef\u80fd\u4f1a\u5148\u6536\u5230\u4e0a\u6e38\u591a\u4e2a\u5e76\u53d1\u4e0a\u53d1\u4e0b\u6765\u7684\u64a4\u56de\u6d88\u606f\uff0c\u8fd9\u5c31\u4f1a\u5bfc\u81f4\u7d2f\u8ba1\u503c\u5148\u4e0b\u964d\u518d\u4e0a\u5347\uff0c\u6240\u4ee5\u5f62\u6210\u4e86\u51f9\u5751\u3002<\/p>\n\n\n\n<p>\u6211\u4eec\u5f15\u5165 CUMULATE \u7a97\u53e3\u6765\u89e3\u51b3\u8fd9\u4e9b\u95ee\u9898\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/pic2.zhimg.com\/80\/v2-f6faaa1bcab28ab9eef201ee91ae350d_720w.webp\" alt=\"\"\/><\/figure>\n\n\n\n<p>\u8fd9\u4e2a\u7a97\u53e3\u51fd\u6570\u548c Flip-145 \u91cc\u63d0\u51fa\u7684 CUMULATE \u7a97\u53e3\u662f\u4e0d\u8c0b\u800c\u5408\u7684\uff0c\u53ea\u662f\u8bed\u6cd5\u4e0a\u5728 Group Window Aggregate \u4e0a\u5f15\u5165\u8fd9\u4e2a\u7a97\u53e3\u7c7b\u578b\u3002\u5b83\u6709\u4e09\u4e2a\u5fc5\u9009\u53c2\u6570\uff1a\u65f6\u95f4\u5c5e\u6027\u5217\u3001\u7a97\u53e3\u7684\u6b65\u957f\u548c max size\uff0c\u8fd8\u6709\u4e00\u4e2a\u53ef\u9009\u53c2\u6570\uff0c\u7528\u6765\u6307\u5b9a\u7a97\u53e3\u5f00\u59cb\u7684\u504f\u79fb\u91cf\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/pic1.zhimg.com\/80\/v2-e2dba9796f71f8039b4d8c15f3623e20_720w.webp\" alt=\"\"\/><\/figure>\n\n\n\n<p>\u5173\u4e8e CUMULATE \u7a97\u53e3\u7684\u5212\u5206\u903b\u8f91\uff0c\u5047\u8bbe CUMULATE \u7a97\u53e3\u7684\u6b65\u957f\u662f\u4e00\u5206\u949f\uff0cmax size \u662f\u4e09\u5206\u949f\uff0cwindow1 \u7684\u533a\u95f4\u662f 0~1 \u5206\uff0cwindow2 \u662f 0~2 \u5206\uff0cwindow3 \u662f 0~3 \u5206\uff0cwindow4 \u5f00\u59cb\u662f 3~4 \u5206\uff0cwindow5 \u662f 3~5 \u5206\uff0c\u4ee5\u6b64\u7c7b\u63a8\uff0c\u800c\u4e00\u6761\u65f6\u95f4\u6233\u662f 0 \u5206 30 \u79d2\u7684\u6570\u636e\uff0c\u4f1a\u88ab\u5212\u5206\u5230 window1\u3001window2 \u548c window3 \u4e09\u4e2a\u7a97\u53e3\u91cc\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/pic4.zhimg.com\/80\/v2-2d921b853912ced1c1b21ecb2b90ac1b_720w.webp\" alt=\"\"\/><\/figure>\n\n\n\n<p>\u6bd4\u5982\u9700\u8981\u7ed8\u5236\u4e00\u6761\u6570\u636e\u66f2\u7ebf\uff0c\u4e00\u5206\u949f\u6253\u4e00\u4e2a\u70b9\uff0c\u6bcf\u4e2a\u70b9\u8868\u793a\u5404\u4e2a\u5b50\u9875\u9762\u5f53\u5929\u7d2f\u8ba1 UV\u3002\u67e5\u8be2\u8bed\u53e5\u91c7\u7528\u4e8b\u4ef6\u65f6\u95f4\uff0cCUMULATE \u7a97\u53e3\u51fd\u6570\u7684\u6b65\u957f\u662f\u4e00\u5206\u949f\uff0cmax size \u662f\u4e00\u5929\uff0c\u4e1a\u52a1\u7684 group key \u662f\u5b50\u9875\u9762\u7684 ID\uff0c\u65f6\u95f4\u6233\u662f\u7a97\u53e3\u7684\u7ed3\u675f\u65f6\u95f4\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/pic2.zhimg.com\/80\/v2-0731a5cc79c5f099b351b2f59ffcb8cd_720w.webp\" alt=\"\"\/><\/figure>\n\n\n\n<p>\u4e0a\u56fe\u53ef\u4ee5\u770b\u5230\uff0c\u4f7f\u7528 CUMULATE \u65b9\u6848\u7ed8\u5236\u51fa\u6765\u7684\u66f2\u7ebf\u4e0d\u7ba1\u662f\u6b63\u5e38\u6d88\u8d39\u8fd8\u662f\u5386\u53f2\u56de\u6eaf\u90fd\u5f88\u5e73\u6ed1\u3002<\/p>\n\n\n\n<p><strong>CUMULATE \u7a97\u53e3\u7684\u4f18\u70b9<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/pic2.zhimg.com\/80\/v2-4b30626017e66e550b6c03de35c90069_720w.webp\" alt=\"\"\/><\/figure>\n\n\n\n<ul>\n<li>\u7b2c\u4e00\u4e2a\u4f18\u70b9\u662f\u4f7f\u7528\u7a97\u53e3\u7684\u7ed3\u675f\u65f6\u95f4\u4f5c\u4e3a\u6bcf\u4e2a\u70b9\u7684\u6a2a\u5750\u6807\uff0c\u66f2\u7ebf\u4e0a\u6bcf\u4e2a\u70b9\u7684\u7eb5\u5750\u6807\u5c31\u662f\u5728\u6a2a\u5750\u6807\u5bf9\u5e94\u65f6\u95f4\u70b9\u4e0a\u7684\u7d2f\u8ba1\u503c\uff0c\u6240\u4ee5\u65e0\u8bba\u5728\u56de\u6eaf\u5386\u53f2\u6216\u8005\u662f\u4f5c\u4e1a\u53d1\u751f failover \u7684\u60c5\u51b5\u4e0b\uff0c\u66f2\u7ebf\u90fd\u53ef\u4ee5\u5b8c\u5168\u8fd8\u539f\uff0c\u800c\u4e14\u5404\u4e2a\u65f6\u95f4\u70b9\u4e0a\u5206\u7ef4\u5ea6\u7684\u503c\u52a0\u8d77\u6765\u603b\u662f\u7b49\u4e8e\u603b\u7ef4\u5ea6\u7684\u503c\u3002<\/li>\n\n\n\n<li>\u7b2c\u4e8c\u4e2a\u4f18\u70b9\u662f\u4f7f\u7528\u4e24\u9636\u6bb5\u805a\u5408\uff0c\u80fd\u591f\u9632\u6b62 distinct key \u503e\u659c\u3002\u7531\u4e8e\u6570\u636e\u662f\u5728\u7a97\u53e3\u7ed3\u675f\u7684\u65f6\u5019\u624d\u53d1\u9001\uff0c\u6240\u4ee5\u4e0d\u5b58\u5728\u64a4\u56de\uff0c\u8f93\u51fa\u7684\u662f append \u6d41\uff0c\u56e0\u6b64\u81ea\u589e\u66f2\u7ebf\u4e0a\u4e5f\u4e0d\u4f1a\u6709\u51f9\u5751\u3002<\/li>\n<\/ul>\n\n\n\n<p><strong>Dynamic cumulate window<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/pic2.zhimg.com\/80\/v2-c2f0105d9f4f1f0063f59e9292b84ce9_720w.webp\" alt=\"\"\/><\/figure>\n\n\n\n<p>Dynamic cumulate window \u4e5f\u662f\u4e3a\u4e86\u89e3\u51b3\u66f2\u7ebf\u7c7b\u7684\u9700\u6c42\uff0c\u6bd4\u5982\u8ba1\u7b97\u76f4\u64ad\u95f4\u81ea\u5f00\u64ad\u4ee5\u6765\u7684\u7d2f\u8ba1\u6307\u6807\uff0c\u4e0e\u524d\u9762\u9700\u6c42\u7684\u4e0d\u540c\u70b9\u662f\u6bcf\u4e2a\u76f4\u64ad\u95f4\u7684\u5f00\u64ad\u5173\u64ad\u80fd\u6301\u7eed\u591a\u4e45\u90fd\u662f\u4e0d\u786e\u5b9a\u7684\uff0c\u4f46\u5b83\u4e5f\u662f\u4e00\u79cd\u8ba1\u7b97\u7d2f\u8ba1\u6307\u6807\u3002\u5b83\u6709\u4e24\u4e2a\u5fc5\u9009\u53c2\u6570\uff1a\u65f6\u95f4\u5c5e\u6027\u5217\u548c\u7a97\u53e3\u7684\u6b65\u957f\uff0c\u8fd8\u6709\u4e00\u4e2a\u53ef\u9009\u53c2\u6570\u7a97\u53e3\u7684 gap\uff0c\u7528\u6765\u5b9a\u4e49\u7a97\u53e3\u591a\u4e45\u6ca1\u6709\u8f93\u5165\u6570\u636e\u5c31\u8ba4\u4e3a\u5b83\u5df2\u7ecf\u7ed3\u675f\u4e86\u3002\u8fd9\u91cc\u9700\u8981\u6ce8\u610f\uff0c\u4e00\u4e2a\u7a97\u53e3\u7ed3\u675f\u4f1a\u89e6\u53d1\u7a97\u53e3\u7684\u7ed3\u679c\u8f93\u51fa\uff0c\u800c\u4e14\u4f1a\u6e05\u7406\u6389\u72b6\u6001\uff0c\u5982\u679c\u53c8\u6765\u4e86\u4e00\u6761\u76f8\u540c key \u7684\u6570\u636e\uff0c\u8fdf\u5230\u7684\u6570\u636e\u4f1a\u88ab\u4e22\u5f03\uff0c\u6ca1\u6709\u8fdf\u5230\u7684\u6570\u636e\u4f1a\u88ab\u5212\u5206\u5230\u65b0\u7684\u7a97\u53e3\u53bb\uff0c\u7d2f\u8ba1\u503c\u4e5f\u4f1a\u4ece\u96f6\u5f00\u59cb\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/pic4.zhimg.com\/80\/v2-c7dae0003647774034d8c1ed4149dfab_720w.webp\" alt=\"\"\/><\/figure>\n\n\n\n<p>\u5982\u4e0a\u56fe\u6848\u4f8b\uff0c\u9700\u8981\u7ed8\u5236\u4e00\u4e2a\u66f2\u7ebf\uff0c\u6bcf\u4e2a\u70b9\u8868\u793a\u6bcf\u4e2a\u76f4\u64ad\u95f4\u5f00\u64ad\u4ee5\u6765\u7684\u7d2f\u8ba1 UV\uff0c\u5982\u679c\u4e00\u4e2a\u76f4\u64ad\u95f4\u8fde\u7eed\u4e00\u4e2a\u5c0f\u65f6\u6ca1\u6709\u6570\u636e\u6d41\u5165\uff0c\u5219\u8ba4\u4e3a\u5173\u64ad\u3002\u7a97\u53e3\u51fd\u6570\u4f7f\u7528 Dynamic cumulate window\uff0c\u6b65\u957f\u662f 1 \u5206\u949f\uff0cgap \u662f 60 \u5206\u949f\uff0cGroup key \u662f\u76f4\u64ad\u95f4 ID\uff0c\u65f6\u95f4\u6233\u4f9d\u7136\u4f7f\u7528\u7a97\u53e3\u7684\u7ed3\u675f\u65f6\u95f4\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"22_Window_Table-valued_Function_%E6%89%A9%E5%B1%95\"><\/span>2.2 Window Table-valued Function \u6269\u5c55<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"221_%E4%B8%B0%E5%AF%8C_Window_TVF_%E7%AE%97%E5%AD%90\"><\/span>2.2.1 \u4e30\u5bcc Window TVF \u7b97\u5b50<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/pic1.zhimg.com\/80\/v2-26eec242ff397c28bb6640cd7846d39c_720w.webp\" alt=\"\"\/><\/figure>\n\n\n\n<p>\u793e\u533a\u5728 Flip-145 \u4e2d\u63d0\u51fa\u7684 Window Table-valued Function (window tvf) \u8bed\u6cd5\uff0c\u5e76\u4e14\u5b9e\u73b0\u4e86\u7a97\u53e3\u805a\u5408\u3002\u5728\u8fd9\u4e2a\u57fa\u7840\u4e0a\u6211\u4eec\u4e30\u5bcc\u4e86\u7a97\u53e3\u7b97\u5b50\uff0c\u5305\u62ec TopN\u3001\u5173\u8054\u548c\u53bb\u91cd\uff0c\u8fd8\u652f\u6301\u4e86\u4e00\u4e2a\u5355\u72ec\u7684 window Table-valued Function \u7684\u67e5\u8be2\u8bed\u53e5\uff0c\u8fd9\u4e9b\u529f\u80fd\u90fd\u5df2\u7ecf\u9646\u7eed\u63a8\u5230\u793e\u533a\u7684\u5404\u4e2a\u7248\u672c\u91cc\u3002\u6709\u4e86\u8fd9\u4e9b\u7a97\u53e3\u7684\u7b97\u5b50\uff0c\u7528\u6237\u5c31\u53ef\u4ee5\u7528 Flink SQL \u5b9e\u73b0\u66f4\u590d\u6742\u7684\u4e1a\u52a1\u903b\u8f91\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/pic3.zhimg.com\/80\/v2-2313950cf226d0a04685506b00b89f92_720w.webp\" alt=\"\"\/><\/figure>\n\n\n\n<p>\u5982\u4e0a\u56fe\uff0c\u9700\u8981\u7edf\u8ba1\u5f53\u5929\u6700\u70ed\u9500\u7684 100 \u4ef6\u5546\u54c1\u7684\u9500\u552e\u989d\u548c\u4e70\u5bb6\u6570\uff0c\u4ee5\u53ca\u8fd9\u4e9b\u7206\u54c1\u6240\u5c5e\u4e3b\u64ad\u7684\u9500\u552e\u60c5\u51b5\u3002\u9996\u5148\u505a\u4e00\u4e2a\u7a97\u53e3\u805a\u5408\uff0c\u5f97\u5230 0 \u70b9\u4ee5\u6765\u6bcf\u4e2a\u5546\u54c1\u7684\u9500\u552e\u989d\u548c\u4e70\u5bb6\u6570\uff0c\u518d\u505a\u4e00\u4e2a\u7a97\u53e3\u805a\u5408\uff0c\u5f97\u5230\u6bcf\u4e2a\u4e3b\u64ad\u6240\u6709\u5b9d\u8d1d\u7684\u4e70\u5bb6\u6570\uff0c\u4e24\u4e2a\u7ed3\u679c\u505a\u7a97\u53e3\u5173\u8054\uff0c\u6700\u540e\u505a\u7a97\u53e3\u4e0a\u7684 TopN\uff0c\u5f97\u5230\u524d 100 \u540d\u7206\u54c1\u4ee5\u53ca\u5b83\u7684\u5404\u9879\u7d2f\u8ba1\u6307\u6807\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"222_%E6%94%AF%E6%8C%81_Window_Offset\"><\/span>2.2.2 \u652f\u6301 Window Offset<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/pic2.zhimg.com\/80\/v2-186c840ae13eebc187aba4db0dff9ec1_720w.webp\" alt=\"\"\/><\/figure>\n\n\n\n<p>window offset \u4e3b\u8981\u7528\u6765\u8c03\u6574\u7a97\u53e3\u7684\u5212\u5206\u903b\u8f91\uff0c\u5b83\u662f\u4e2a\u53ef\u9009\u53c2\u6570\uff0c\u9ed8\u8ba4\u503c\u662f 0\uff0c\u8868\u793a unix \u65f6\u95f4\u7684\u96f6\u70b9\u4f5c\u4e3a\u7a97\u53e3\u5212\u5206\u7684\u8d77\u59cb\u65f6\u95f4\uff0c\u5b83\u7684\u503c\u53ef\u4ee5\u662f\u4e00\u4e2a\u6b63\u6570\uff0c\u8868\u793a\u5411\u53f3\u504f\u79fb\uff0c\u4e5f\u53ef\u4ee5\u662f\u4e00\u4e2a\u8d1f\u6570\uff0c\u8868\u793a\u5411\u5de6\u504f\u79fb\u3002\u4f46\u662f\u5b83\u53ea\u4f1a\u5f71\u54cd\u5982\u4f55\u5212\u5206\u7a97\u53e3\uff0c\u4e0d\u4f1a\u5f71\u54cd watermark\u3002\u53e6\u5916\uff0c\u76f8\u540c\u7684\u7a97\u53e3\uff0c\u4e0d\u540c\u7684 offset \u53ef\u80fd\u4f1a\u4ea7\u751f\u76f8\u540c\u7684\u504f\u79fb\u6548\u679c\uff0c\u6bd4\u5982\u5bf9\u4e00\u4e2a 10 \u5206\u949f\u7684\u6eda\u52a8\u7a97\u53e3\uff0c\u628a\u8d77\u70b9\u5411\u5de6\u504f\u79fb 4 \u5206\u949f\u6216\u8005\u5411\u53f3\u504f\u79fb 6 \u5206\u949f\uff0c\u5bf9\u7a97\u53e3\u5212\u5206\u4ea7\u751f\u7684\u5f71\u54cd\u662f\u4e00\u6837\u7684\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/pic3.zhimg.com\/80\/v2-27cc6ca8311fc71ead391538eb52b68a_720w.webp\" alt=\"\"\/><\/figure>\n\n\n\n<p>\u5982\u4e0a\u56fe\u5b9e\u4f8b\uff0c\u9700\u8981\u7ed8\u5236\u4e00\u4e2a\u6570\u636e\u66f2\u7ebf\uff0c\u6bcf\u5206\u949f\u6253\u4e00\u4e2a\u70b9\u8868\u793a\u6bcf\u4e2a\u9875\u9762\u672c\u5468\u4ee5\u6765\u7684\u7d2f\u79ef UV\u3002\u53ef\u4ee5\u4f7f\u7528 CUMULATE \u7a97\u53e3\u51fd\u6570\uff0c\u91c7\u7528\u4e8b\u4ef6\u65f6\u95f4\uff0c\u6b65\u957f\u662f 1 \u5206\u949f\uff0cmax size \u662f 7 \u5929\u3002\u56e0\u4e3a unix time \u96f6\u70b9\u90a3\u5929\u662f\u5728\u5468\u56db\uff0c\u5047\u8bbe\u7528\u9ed8\u8ba4\u7684 offset\uff0c\u7a97\u53e3\u5212\u5206\u5c31\u662f\u4ece\u672c\u5468\u56db\u5230\u4e0b\u5468\u56db\uff0c\u6240\u4ee5\u8981\u8bbe\u7f6e offset \u4e3a 4 \u5929\uff0c\u8868\u793a\u5411\u53f3\u504f\u79fb 4 \u5929\uff0c\u8fd9\u6837\u5c31\u662f\u4ece\u672c\u5468\u4e00\u5230\u4e0b\u5468\u4e00\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"223_%E6%94%AF%E6%8C%81_Batch_Mode\"><\/span>2.2.3 \u652f\u6301 Batch Mode<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/pic2.zhimg.com\/80\/v2-46db97e4670a4dbdc7212cc5089a29b5_720w.webp\" alt=\"\"\/><\/figure>\n\n\n\n<p>\u53e6\u5916\u6211\u4eec\u8fd8\u589e\u52a0\u4e86\u5bf9\u6279\u6a21\u5f0f\u7684\u652f\u6301\u3002\u539f\u7406\u662f\u5f15\u5165\u4e00\u4e2a windows \u7b97\u5b50\uff0c\u7ed9\u8f93\u5165\u6570\u636e\u9644\u4e0a\u6240\u5c5e\u7684\u7a97\u53e3\u5c5e\u6027\u540e\u53d1\u7ed9\u4e0b\u6e38\uff0c\u800c\u4e0b\u6e38\u7684\u7b97\u5b50\u590d\u7528\u6279\u4e0a\u5df2\u7ecf\u5b58\u5728\u7684\u7b97\u5b50\uff0c\u6bd4\u5982\u8bf4\u805a\u5408\u4e0a\u662f\u7528 HashAgg \u6216\u8005 SortAgg\uff0c\u5173\u8054\u4e0a\u662f HashJoin \u6216\u8005 SortMergeJoin\uff0c\u8fd9\u4e9b\u6279\u4e0a\u7684\u7b97\u5b50\u548c\u6d41\u6a21\u5f0f\u4e0b\u7684\u7b97\u5b50\u76f8\u6bd4\uff0c\u4e0d\u9700\u8981\u72b6\u6001\uff0c\u6240\u4ee5\u541e\u5410\u4e0a\u4e5f\u6709\u66f4\u597d\u7684\u8868\u73b0\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E4%B8%89%E3%80%81%E6%80%A7%E8%83%BD%E4%BC%98%E5%8C%96\"><\/span>\u4e09\u3001\u6027\u80fd\u4f18\u5316<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/pic2.zhimg.com\/80\/v2-ae543dfd3e0bb6b4b25f894af90cd1e5_720w.webp\" alt=\"\"\/><\/figure>\n\n\n\n<p>\u672c\u6587\u4e3b\u8981\u4ecb\u7ecd\u4e24\u4e2a\u65b9\u9762\u7684\u4f18\u5316\uff0c\u4e00\u4e2a\u662f\u805a\u5408\u4e0a\u7684\u72b6\u6001\u4f18\u5316\uff0c\u4e00\u4e2a\u662f\u7ef4\u8868\u5173\u8054\u4e0a\u7684\u6512\u6279\u4f18\u5316\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"31_%E8%81%9A%E5%90%88%E4%B8%8A%E7%9A%84%E7%8A%B6%E6%80%81%E4%BC%98%E5%8C%96\"><\/span>3.1 \u805a\u5408\u4e0a\u7684\u72b6\u6001\u4f18\u5316<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/pic2.zhimg.com\/80\/v2-1e12f2460cb22df0bf68a583008789b1_720w.webp\" alt=\"\"\/><\/figure>\n\n\n\n<p>\u5148\u901a\u8fc7\u4e00\u4e2a\u4f8b\u5b50\u6765\u4e86\u89e3\u4e00\u4e0b\u805a\u5408\u573a\u666f\u4e0b distinct states \u7684\u72b6\u6001\u590d\u7528\u3002\u9700\u8981\u7edf\u8ba1\u5e94\u7528\u4e0b\u6bcf\u4e2a\u5b50\u9891\u9053\u7684 UV\uff0c\u8be5\u7528\u4f8b\u6709\u4e24\u4e2a\u7279\u70b9\uff0c\u9891\u9053\u662f\u53ef\u679a\u4e3e\u7684\u4ee5\u53ca\u6bcf\u4e2a\u9891\u9053\u8bbf\u5ba2\u7684\u91cd\u5408\u5ea6\u5f88\u9ad8\u7684\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/pic1.zhimg.com\/80\/v2-3ada0189a40fcd324753c08145499b4c_720w.webp\" alt=\"\"\/><\/figure>\n\n\n\n<p>\u6700\u539f\u59cb\u7684\u67e5\u8be2\u8bed\u53e5\u5982\u4e0a\u56fe\uff0cgroup key \u662f\u4e00\u4e2a\u9891\u9053\uff0c\u7528\u4e00\u4e2a count distinct \u6765\u8ba1\u7b97\u5404\u4e2a\u9891\u9053\u7684 UV\u3002\u8bbe\u5907\u96c6\u5408\u5728\u72b6\u6001\u4e2d\u9996\u5148\u662f\u5b58\u5728\u4e00\u4e2a map state\uff0c\u5047\u8bbe\u9891\u9053\u7684\u679a\u4e3e\u53ea\u6709\u4e09\u4e2a\uff0cA\u3001B \u548c other\uff0cgroup key \u662f\u9891\u9053 ID, map state \u7684 key \u8bbe\u5907 ID\uff0c value \u662f\u4e00\u4e2a 64 bit \u7684 long \u7c7b\u578b\u7684\u503c\uff0c\u6bcf\u4e2a bit \u8868\u793a\u8fd9\u4e2a\u9891\u9053\u4e0b\u8be5\u8bbe\u5907\u662f\u5426\u51fa\u73b0\uff0c\u5728\u7b80\u5355\u7684\u573a\u666f\u4e0b\u8fd9\u4e2a Value \u503c\u5c31\u662f 1\u3002<\/p>\n\n\n\n<p>\u4e0a\u56fe A \u9891\u9053\u4e0b\u6709\u4e24\u4e2a\u8bbe\u5907\uff0cID \u5206\u522b\u662f 1 \u548c 2\uff0cID \u4e3a 1 \u7684\u8bbe\u5907\u540c\u65f6\u8bbf\u95ee\u4e86 B \u9891\u9053\uff0cid \u4e3a 2 \u7684\u8bbe\u5907\u540c\u65f6\u8bbf\u95ee\u4e86 other \u9891\u9053\u3002\u53ef\u4ee5\u53d1\u73b0\uff0c\u4e0d\u540c\u9891\u9053\u7684 map \u53ef\u4ee5\u6709\u5927\u91cf\u7684\u91cd\u5408\uff0c\u60f3\u8981\u590d\u7528\u8fd9\u4e9b key\uff0c\u53ef\u4ee5\u7528\u793e\u533a\u63d0\u4f9b\u7684\u65b9\u6cd5\u6765\u624b\u52a8\u6539\u5199 SQL\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/pic2.zhimg.com\/80\/v2-c3306f393689ee5a1a9acbe5027beeb9_720w.webp\" alt=\"\"\/><\/figure>\n\n\n\n<p>\u9996\u5148\u505a\u4e2a\u884c\u8f6c\u5217\u7684\u64cd\u4f5c\uff0c\u628a\u4e09\u4e2a\u9891\u9053\u503c\u62cd\u5230\u4e09\u4e2a count distinct \u805a\u5408\u51fd\u6570\u7684 filter \u6761\u4ef6\uff0c\u5728\u8f93\u51fa\u4e4b\u524d\u518d\u7528\u4e00\u4e2a\u81ea\u5b9a\u4e49\u7684\u8868\u51fd\u6570\u6765\u505a\u5217\u8f6c\u884c\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/pic1.zhimg.com\/80\/v2-638f836d3a95fe602893c130035fb280_720w.webp\" alt=\"\"\/><\/figure>\n\n\n\n<p>\u6539\u5199\u540e\u7684\u67e5\u8be2\u8bed\u53e5\u3001\u8bbe\u5907\u96c6\u5408\u7684\u72b6\u6001\u548c\u5b58\u50a8\u5982\u4e0a\u56fe\u3002Group key \u662f empty\uff0cmap state key \u662f\u8bbe\u5907 ID\uff0cmap state value \u662f\u4e00\u4e2a 64bit \u7684 long \u7c7b\u578b\uff0c\u6bcf\u4e2a bit \u8868\u793a\u5404\u9891\u9053\u4e0b\u6b64\u8bbe\u5907\u662f\u5426\u51fa\u73b0\uff0c\u6bd4\u5982 ID \u4e3a 1 \u7684\u8bbe\u5907 value \u662f 110\uff0c\u8868\u793a\u8fd9\u4e2a\u8bbe\u5907\u8bbf\u95ee\u4e86\u9891\u9053 A \u548c B\uff0cID \u4e3a 3 \u7684\u8bbe\u5907\u8bbf\u95ee\u4e86\u9891\u9053 B \u548c other\u3002<\/p>\n\n\n\n<p>\u8fd9\u4e2a\u65b9\u6848\u5927\u5927\u51cf\u5c11\u4e86\u72b6\u6001\uff0c\u4f46\u4e5f\u5b58\u5728\u4e24\u4e2a\u7f3a\u70b9\u3002\u7b2c\u4e00\u662f\u9700\u8981\u624b\u52a8\u6539\u5199 SQL\uff0c\u5982\u679c\u4e00\u4e2a\u7ef4\u5ea6\u6709\u591a\u4e2a\u503c\u6216\u6709\u591a\u4e2a\u53ef\u679a\u4e3e\u7684\u7ef4\u5ea6\uff0c\u90a3\u4e48\u624b\u52a8\u6539\u5199\u7684 SQL \u4f1a\u5f88\u957f\uff0c\u53e6\u5916\u4e00\u4e2a\u7f3a\u70b9\u662f\u9700\u8981\u7528\u81ea\u5b9a\u4e49\u7684\u8868\u51fd\u6570\u8fdb\u884c\u5217\u8f6c\u884c\u8f6c\u6362\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/pic1.zhimg.com\/80\/v2-4dec8268fd22564ab45094892c3a2d94_720w.webp\" alt=\"\"\/><\/figure>\n\n\n\n<p>\u6211\u4eec\u63d0\u51fa\u4e00\u79cd\u7b80\u5316\u7684 SQL \u8868\u8fbe\u65b9\u5f0f\uff0c\u65e2\u80fd\u8fbe\u5230\u72b6\u6001\u4e0a\u7684\u6536\u76ca\uff0c\u53c8\u80fd\u51cf\u8f7b\u6570\u636e\u5f00\u53d1\u4eba\u5458\u7684\u8d1f\u62c5\u3002\u7528\u6237\u53ea\u9700\u8981\u5728\u67e5\u8be2\u8bed\u53e5\u91cc\uff0c\u901a\u8fc7\u4e00\u4e2a\u65b9\u5f0f\u544a\u8bc9\u4f18\u5316\u5668 group key \u7684\u679a\u4e3e\u503c\uff0c\u4f18\u5316\u5668\u5c31\u4f1a\u81ea\u52a8\u6539\u5199\uff0c\u8fdb\u884c\u8f6c\u5217\u548c\u5217\u8f6c\u884c\uff0c\u6539\u5199\u540e\u5c31\u53ef\u4ee5\u590d\u7528 distinct map state\u3002\u6539\u5199\u540e\u7b49\u4ef7\u4e0b\u7684\u67e5\u8be2\u8bed\u53e5\uff0c\u53ea\u9700\u8981\u5728\u8fc7\u6ee4\u6761\u4ef6\u91cc\u6307\u5b9a\u679a\u4e3e\u503c\u5c31\u53ef\u4ee5\uff0c\u7528 in \u6216 or \u7684\u8868\u8fbe\u65b9\u5f0f\u90fd\u53ef\u4ee5\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/pic1.zhimg.com\/80\/v2-70fe2e5cd6c8581f05c6a376905100a4_720w.webp\" alt=\"\"\/><\/figure>\n\n\n\n<p>\u4e0a\u8ff0\u6027\u80fd\u4f18\u5316\u53ef\u4ee5\u7528\u5728\u65e0\u9650\u6d41\u805a\u5408\u548c\u7a97\u53e3\u805a\u5408\uff0c\u5e76\u4e14\u4e00\u4e2a\u53ef\u679a\u4e3e\u7ef4\u5ea6\u6216\u591a\u4e2a\u53ef\u679a\u4e3e\u7ef4\u5ea6\u90fd\u662f\u53ef\u4ee5\u7684\uff0c\u53ef\u4ee5\u7528\u5728\u7b80\u5355\u7684\u805a\u5408\u67e5\u8be2\uff0c\u4e5f\u53ef\u4ee5\u7528\u5728\u591a\u7ef4\u805a\u5408\u3002<\/p>\n\n\n\n<p>\u4f46\u5b83\u7684\u9650\u5236\u6761\u4ef6\u662f group key \u91cc\u9762\u81f3\u5c11\u6709\u4e00\u4e2a key \u662f\u53ef\u679a\u4e3e\u7684\uff0c\u800c\u4e14\u679a\u4e3e\u503c\u5fc5\u987b\u662f\u9759\u6001\u7684\uff0c\u80fd\u591f\u660e\u786e\u5199\u5728\u8fc7\u6ee4\u6761\u4ef6\u91cc\u3002\u53e6\u5916\u6bcf\u4e2a\u7ef4\u5ea6\u4e0b\u7684 distinct key \u5f97\u6709\u91cd\u5408\u624d\u80fd\u8fbe\u5230\u8282\u7ea6\u72b6\u6001\u7684\u6548\u679c\u3002\u5982\u679c\u9700\u8981\u7edf\u8ba1\u6bcf\u4e2a\u7701\u4efd\u7684 UV\uff0c\u57fa\u672c\u4e0a\u53ef\u4ee5\u8ba4\u4e3a\u4e0d\u540c\u7701\u4efd\u7684\u8bbf\u5ba2\u662f\u6ca1\u6709\u4ea4\u96c6\u7684\uff0c\u8fd9\u4e2a\u65f6\u5019\u590d\u7528 distinct key \u662f\u6ca1\u6709\u6536\u76ca\u7684\u3002\u53e6\u5916\u5728\u7a97\u53e3\u805a\u5408\u7684\u65f6\u5019\uff0c\u7a97\u53e3\u51fd\u6570\u5fc5\u987b\u5177\u6709\u884c\u8bed\u4e49\uff0c\u4e0d\u53ef\u4ee5\u662f\u96c6\u5408\u8bed\u4e49\u3002\u5bf9\u4e8e\u884c\u8bed\u4e49\u7684\u7a97\u53e3\uff0c\u5f53\u524d\u8fd9\u4e2a\u6570\u636e\u5c5e\u4e8e\u54ea\u4e2a\u7a97\u53e3\u53d6\u51b3\u4e8e\u6570\u636e\u672c\u8eab\uff1b\u4f46\u662f\u5bf9\u4e8e\u96c6\u5408\u8bed\u4e49\u7684\u7a97\u53e3\uff0c\u5f53\u524d\u8fd9\u6761\u6570\u636e\u5c5e\u4e8e\u54ea\u4e2a\u7a97\u53e3\uff0c\u4e0d\u4ec5\u53d6\u51b3\u4e8e\u6570\u636e\u672c\u8eab\uff0c\u8fd8\u53d6\u51b3\u4e8e\u8fd9\u4e2a\u7a97\u53e3\u6536\u5230\u8fc7\u7684\u5386\u53f2\u6570\u636e\u96c6\u5408\u3002\u8fd9\u4e2a\u4f18\u5316\u8c03\u6574\u805a\u5408\u7b97\u5b50\u7684 group key\uff0c\u4f1a\u5f71\u54cd\u6bcf\u4e2a\u7a97\u53e3\u6536\u5230\u7684\u6570\u636e\u96c6\u5408\uff0c\u6240\u4ee5\u4e0d\u9002\u7528\u4e8e\u96c6\u5408\u8bed\u4e49\u7684\u7a97\u53e3\u3002<\/p>\n\n\n\n<p>\u6700\u540e\u53ef\u80fd\u6709\u7528\u6237\u4f1a\u95ee\uff0c\u4e3a\u4ec0\u4e48\u8bed\u6cd5\u4e0a\u4e0d\u91c7\u7528 Calcite \u63d0\u4f9b pivot\/unpivot \u6765\u663e\u5f0f\u5730\u8868\u8fbe\u884c\u8f6c\u5217\u548c\u5217\u8f6c\u884c\u3002\u9996\u5148\u662f\u6761\u4ef6\u4e0d\u5177\u5907\uff0c\u56e0\u4e3a calcite \u7684 1.26 \u7248\u672c\u624d\u5f15\u5165 pivot\uff0c1.27 \u624d\u5f15\u5165 unpivot\uff0c\u800c Flink \u4ece 1.12 \u7248\u672c\u81f3\u4eca\u90fd\u662f\u4f9d\u8d56 Calcite 1.26\u3002\u7b2c\u4e8c\u4e2a\u539f\u56e0\u662f\u5982\u679c\u7528 pivot\/unpivot \u7684\u8bed\u6cd5\uff0cSQL \u4f1a\u6bd4\u73b0\u5728\u8868\u8fbe\u65b9\u5f0f\u957f\u5f88\u591a\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"32_%E7%BB%B4%E8%A1%A8%E5%85%B3%E8%81%94%E7%9A%84%E6%94%92%E6%89%B9%E4%BC%98%E5%8C%96\"><\/span>3.2 \u7ef4\u8868\u5173\u8054\u7684\u6512\u6279\u4f18\u5316<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/pic1.zhimg.com\/80\/v2-d811e090348a84f0a0e395796ca220fc_720w.webp\" alt=\"\"\/><\/figure>\n\n\n\n<p>\u7ef4\u8868\u5173\u8054\u7684\u6512\u6279\u4f18\u5316\u662f\u4e3a\u4e86\u51cf\u5c11 RPC \u7684\u8c03\u7528\u6b21\u6570\u3002\u539f\u7406\u662f\u6512\u4e00\u6279\u6570\u636e\u4ee5\u540e\uff0c\u8c03\u7528\u7ef4\u8868\u7684\u6279\u91cf\u67e5\u8be2\u63a5\u53e3\uff0c\u8bed\u6cd5\u4e0a\u6211\u4eec\u5f15\u5165\u901a\u7528\u7684 Mini-Batch hint\uff0c\u5b83\u6709\u4e24\u4e2a\u53c2\u6570\uff1a\u4e00\u4e2a\u8868\u793a\u591a\u957f\u65f6\u95f4\u6512\u4e00\u6279\uff0c\u4e00\u4e2a\u8868\u793a\u591a\u5c11\u6761\u6570\u636e\u6512\u4e00\u6279\u3002\u4e00\u4e2a\u5408\u6cd5\u7684 Mini-Batch hint \u7684\u81f3\u5c11\u5305\u542b\u4e00\u4e2a\u53c2\u6570\u3002\u6211\u4eec\u5c06 hint \u8bbe\u8ba1\u5f97\u5f88\u901a\u7528\uff0c\u5e0c\u671b\u5b83\u4e0d\u4ec5\u53ef\u4ee5\u7528\u4e8e\u7ef4\u8868\u5173\u8054\uff0c\u8fd8\u53ef\u4ee5\u7528\u4e8e\u805a\u5408\u7684\u6512\u6279\u4f18\u5316\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/pic1.zhimg.com\/80\/v2-0370848295573f5db391029682ece6a4_720w.webp\" alt=\"\"\/><\/figure>\n\n\n\n<p>\u518d\u770b\u4e00\u4e2a\u4f8b\u5b50\uff0c\u9700\u8981\u6253\u5bbd\u8ba2\u5355\u8868\uff0c\u5173\u8054\u8ba2\u5355\u7684\u5ba2\u6237\u4fe1\u606f\u3002\u67e5\u8be2\u8bed\u53e5\u5728 customers \u7ef4\u8868\u540e\u9762\u8ddf\u4e00\u4e2a hint \u8868\u793a 5 \u79d2\u6512\u4e00\u6279\u6216 1 \u4e07\u6761\u6570\u636e\u6512\u4e00\u6279\uff0c\u8fd9\u4e2a\u4f18\u5316\u5728\u5e95\u5c42\u7b97\u5b50\u548c\u8bbe\u8ba1\u7684\u5b9e\u73b0\u4e0a\uff0c\u8fdc\u6bd4 SQL \u8bed\u6cd5\u7684\u8868\u8fbe\u8981\u590d\u6742\u5f97\u591a\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E5%9B%9B%E3%80%81%E7%A8%B3%E5%AE%9A%E6%80%A7%E6%8F%90%E5%8D%87\"><\/span>\u56db\u3001\u7a33\u5b9a\u6027\u63d0\u5347<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/pic2.zhimg.com\/80\/v2-58334fa9a365bb14eb61c5c79bc893e9_720w.webp\" alt=\"\"\/><\/figure>\n\n\n\n<p>\u7a33\u5b9a\u6027\u65b9\u9762\u4e3b\u8981\u4ecb\u7ecd\u5bf9 Group Window Aggregate \u89e3\u51b3\u6570\u636e\u503e\u659c\u548c Flink SQL \u805a\u5408\u6307\u6807\u8c03\u6574\u4e4b\u540e\u7684\u72b6\u6001\u517c\u5bb9\u8fd9\u4e24\u90e8\u5206\u5feb\u624b\u505a\u7684\u4e00\u4e9b\u4f18\u5316\u548c\u6539\u8fdb\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"41_Group_Window_Aggregate_%E7%9A%84%E6%95%B0%E6%8D%AE%E5%80%BE%E6%96%9C\"><\/span>4.1 Group Window Aggregate \u7684\u6570\u636e\u503e\u659c<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/pic2.zhimg.com\/80\/v2-d80f04a1c3515fe12deb856d5304c6e1_720w.webp\" alt=\"\"\/><\/figure>\n\n\n\n<p>window \u8ba1\u7b97\u5728\u5feb\u624b\u5185\u90e8\u7684\u5e94\u7528\u975e\u5e38\u5e7f\u6cdb\uff0c\u5feb\u624b\u7684\u4e1a\u52a1\u573a\u666f\u6bd4\u8f83\u5bb9\u6613\u9047\u5230\u6570\u636e\u503e\u659c\uff0c\u6bd4\u5982\u5927\u4e3b\u64ad\u7684\u76f4\u64ad\u3001\u4e00\u4e9b\u91cd\u5927\u6d3b\u52a8\u7b49\u3002\u5b9e\u65f6\u8ba1\u7b97\u5982\u679c\u9047\u5230\u6570\u636e\u503e\u659c\uff0c\u8f7b\u5219\u6307\u6807\u5ef6\u8fdf\uff0c\u91cd\u5219\u6570\u636e\u4e8b\u6545\uff0c\u6240\u4ee5\u6211\u4eec\u5728 Tumble window \u4e0a\u652f\u6301\u4e86 Mini-Batch\u3001Local-Global\u3001Split Distinct \u7684\u4f18\u5316\uff0c\u5176\u4ed6\u5e38\u7528\u7684 window \u4e0a\u4e5f\u652f\u6301\u4e86\u7c7b\u4f3c\u7684\u4f18\u5316\u3002\u8fd9\u4e9b\u4f18\u5316\u4e0a\u7ebf\u4e4b\u540e\uff0c\u4e0d\u4ec5\u80fd\u591f\u5e2e\u52a9\u4e1a\u52a1\u89c4\u907f\u6570\u636e\u503e\u659c\uff0c\u540c\u65f6\u8fd8\u53ef\u4ee5\u5e26\u6765\u4e0d\u9519\u7684\u6027\u80fd\u6536\u76ca\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"42_Aggregate_State_%E5%85%BC%E5%AE%B9\"><\/span>4.2 Aggregate State \u517c\u5bb9<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/pic3.zhimg.com\/80\/v2-4460b22c39ec67d5af4a717760cb7ffe_720w.webp\" alt=\"\"\/><\/figure>\n\n\n\n<p>\u9996\u5148\u6765\u770b Flink SQL \u4e0a Aggregate state \u517c\u5bb9\u7684\u4e1a\u52a1\u573a\u666f\u3002\u968f\u7740\u4e1a\u52a1\u7684\u53d1\u5c55\uff0c\u65e5\u5e38\u8fd0\u884c\u7684\u4efb\u52a1\u53ef\u80fd\u8981\u65b0\u589e\u6307\u6807\u6216\u8005\u5220\u9664\u4e0d\u9700\u8981\u7684\u6307\u6807\u3002\u91cd\u5927\u6d3b\u52a8\u8fc7\u7a0b\u4e2d\uff0c\u4e1a\u52a1\u8981\u65b0\u589e\u5929\u7ea7\u7d2f\u8ba1\u7684\u6307\u6807\u6216\u8005\u6d3b\u52a8\u5468\u671f\u6301\u7eed\u7d2f\u79ef\u7684\u6307\u6807\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/pic2.zhimg.com\/80\/v2-ccc6222644ca01398c0dc804c19924b1_720w.webp\" alt=\"\"\/><\/figure>\n\n\n\n<p>\u5982\u679c\u662f\u5929\u7ea7\u6307\u6807\u7684\u53d8\u66f4\uff0c\u5f00\u53d1\u8005\u53ea\u80fd\u4e22\u5f03\u72b6\u6001\uff0c\u5728 0 \u70b9\u4e4b\u540e\u5347\u7ea7\u4efb\u52a1\uff0c\u7136\u540e\u518d\u6307\u5b9a\u4efb\u52a1\u4ece\u96f6\u70b9\u7684\u6570\u636e\u5f00\u59cb\u6d88\u8d39\uff0c\u4ece\u800c\u4fdd\u8bc1\u6307\u6807\u7684\u8fde\u7eed\u3002\u5982\u679c\u662f\u6d3b\u52a8\u6301\u7eed\u7d2f\u79ef\u7684\u6307\u6807\uff0c\u4e3a\u4e86\u907f\u514d\u5bf9\u539f\u6709\u6307\u6807\u7684\u5f71\u54cd\uff0c\u53ea\u80fd\u9009\u62e9\u65b0\u589e\u4e00\u4e2a\u4efb\u52a1\u6765\u5355\u72ec\u8ba1\u7b97\u65b0\u589e\u6307\u6807\uff0c\u4f46\u662f\u8fd9\u6837\u4f1a\u5bfc\u81f4\u8d44\u6e90\u7684\u5197\u4f59\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/pic1.zhimg.com\/80\/v2-305dcb2984b1f4276737bafb1e567ed0_720w.webp\" alt=\"\"\/><\/figure>\n\n\n\n<p>\u4e4b\u6240\u4ee5\u9700\u8981\u8fd9\u4e48\u590d\u6742\u7684\u64cd\u4f5c\uff0c\u662f\u56e0\u4e3a Flink SQL \u5224\u65ad state \u662f\u5426\u517c\u5bb9\u7684\u7b56\u7565\u6bd4\u8f83\u7b80\u5355\uff0c\u53ea\u770b\u5f15\u64ce\u9700\u8981\u7684 state \u548c Savepoint \u91cc\u4fdd\u5b58\u7684 state \u7684\u6570\u636e\u7c7b\u578b\u662f\u5426\u5b8c\u5168\u4e00\u81f4\uff0c\u5b8c\u5168\u4e00\u81f4\u5c31\u662f\u517c\u5bb9\uff0c\u5426\u5219\u4e0d\u517c\u5bb9\u3002\u8fd9\u79cd\u5224\u65ad\u65b9\u5f0f\u5b58\u5728\u4e00\u4e2a\u6f0f\u6d1e\uff0cState \u7684\u7c7b\u578b\u6ca1\u53d8\u4f46\u662f SQL \u4e2d\u7684\u805a\u5408\u51fd\u6570\u53d8\u4e86\uff0c\u8fd9\u79cd\u60c5\u51b5 Flink \u4e5f\u4f1a\u8ba4\u4e3a\u72b6\u6001\u662f\u517c\u5bb9\u7684\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/pic1.zhimg.com\/80\/v2-2e8a003a5313e5f01214c8517c48a88c_720w.webp\" alt=\"\"\/><\/figure>\n\n\n\n<p>\u57fa\u4e8e\u8fd9\u4e2a\u80cc\u666f\uff0c\u6211\u4eec\u63d0\u51fa\u4e86 aggregate state \u7684\u517c\u5bb9\uff0c\u76ee\u6807\u662f\u4f7f\u7528\u6237\u5b66\u4e60\u4f7f\u7528 state \u517c\u5bb9\u65b9\u6848\u7684\u6210\u672c\u6781\u4f4e (\u6216 0 \u6210\u672c)\uff0c\u7528\u6237\u53ef\u4ee5\u968f\u65f6\u5347\u7ea7\u4efb\u52a1\uff0c\u4e0d\u9700\u8981\u518d\u5361\u96f6\u70b9\u64cd\u4f5c\uff0c\u652f\u6301\u5bf9\u805a\u5408\u51fd\u6570\u7684\u65b0\u589e\u548c\u5220\u9664\u64cd\u4f5c\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/pic3.zhimg.com\/80\/v2-6483adabff32c07041697af19dc6e6ba_720w.webp\" alt=\"\"\/><\/figure>\n\n\n\n<p>aggregate state \u517c\u5bb9\u7684\u64cd\u4f5c\u573a\u666f\u53ea\u80fd\u5728\u805a\u5408\u51fd\u6570\u5c3e\u90e8\u65b0\u589e\u805a\u5408\u51fd\u6570\uff0c\u5141\u8bb8\u5220\u9664\u4efb\u610f\u4f4d\u7f6e\u7684\u805a\u5408\u51fd\u6570\uff0c\u4e0d\u5141\u8bb8\u4fee\u6539\u805a\u5408\u51fd\u6570\u7684\u987a\u5e8f\uff0c\u4e5f\u4e0d\u5141\u8bb8\u4e00\u6b21\u5347\u7ea7\u540c\u65f6\u6709\u65b0\u589e\u548c\u5220\u9664\u4e24\u79cd\u64cd\u4f5c\uff0c\u9700\u8981\u5206\u4e3a\u4e24\u6b21\u5347\u7ea7\u5b8c\u6210\u3002<\/p>\n\n\n\n<p>\u4e0a\u56fe\u53f3\u8868\u683c\u662f\u6307\u6807\u6807\u8bc6\u548c state \u7c7b\u578b\u7684\u6620\u5c04\u5173\u7cfb\u3002\u4e3a\u4e86\u65b9\u4fbf\u5224\u65ad state \u662f\u5426\u517c\u5bb9\uff0c\u6211\u4eec\u628a\u6307\u6807\u6807\u8bc6\u548c state \u7c7b\u578b\u7684\u6620\u5c04\u5173\u7cfb\u4fdd\u5b58\u5230 state \u7684 meta \u4e2d\uff0c\u56e0\u4e3a\u6709\u7684\u805a\u5408\u51fd\u6570\u53ef\u80fd\u6709\u4e0d\u6b62\u4e00\u4e2a state\uff0c\u6bd4\u5982 avg \u51fd\u6570\uff0c\u5b83\u5c31\u9700\u8981\u901a\u8fc7 sum \u548c count \u4e24\u4e2a state \u6765\u8f85\u52a9\u8ba1\u7b97\uff0c\u6240\u4ee5\u8fd9\u4e2a\u6620\u5c04\u5173\u7cfb\u5f88\u91cd\u8981\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/pic2.zhimg.com\/80\/v2-08d019c24019bcb9d952f20db5cb9709_720w.webp\" alt=\"\"\/><\/figure>\n\n\n\n<p>\u5728\u65b0\u589e\u805a\u5408\u51fd\u6570\u7684\u65f6\u5019\uff0c\u9700\u8981\u5bf9\u65b0\u589e\u7684 state \u505a\u521d\u59cb\u503c\u586b\u5145\uff0c\u4e0d\u540c\u51fd\u6570\u5bf9\u5e94\u7684\u521d\u59cb\u503c\u662f\u4e0d\u4e00\u6837\u7684\uff0c\u6bd4\u5982 count \u7684\u521d\u59cb\u503c\u662f 0\uff0c\u4f46\u662f sum \u7684\u521d\u59cb\u503c\u5fc5\u987b\u662f null\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/pic4.zhimg.com\/80\/v2-dcf009f4cc8db3873926e69294113b87_720w.webp\" alt=\"\"\/><\/figure>\n\n\n\n<p>window \u7684 early-fire \u548c late-fire \u573a\u666f\u4f1a\u5f15\u5165 Retract \u6d88\u606f\uff0c\u8fd9\u6837\u5c31\u591a\u4e00\u4e2a state \u6765\u8bb0\u5f55\u5df2\u7ecf\u4e0b\u53d1\u7ed9\u4e0b\u6e38\u7684\u6570\u636e\u3002\u5b83\u6bd4 window \u539f\u6709\u7684 state \u591a\u4e86\u65f6\u95f4\u5b57\u6bb5\uff0c\u5728\u505a\u5224\u65ad\u548c\u72b6\u6001\u8fc1\u79fb\u7684\u65f6\u5019\u9700\u8981\u505a\u4e00\u4e0b\u5904\u7406\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/pic1.zhimg.com\/80\/v2-2c444e21fe1ed0fdbc23ea2743543240_720w.webp\" alt=\"\"\/><\/figure>\n\n\n\n<p>\u524d\u9762\u63d0\u5230\u4e86\u6211\u4eec\u628a\u6307\u6807\u6807\u8bc6\u548c state \u7c7b\u578b\u7684\u6620\u5c04\u5173\u7cfb\u4fdd\u5b58\u5230\u4e86 state \u7684 meta \u4fe1\u606f\u91cc\uff0c\u8fd9\u4f1a\u5e26\u6765 state \u5411\u524d\u517c\u5bb9\u7684\u95ee\u9898\uff0c\u65b0\u7248\u672c\u7684\u7a0b\u5e8f\u4e0d\u80fd\u6b63\u786e\u8bfb\u53d6\u4e4b\u524d\u7248\u672c\u7684 Savepoint\u3002\u4e3a\u4e86\u89e3\u51b3\u8fd9\u4e2a\u95ee\u9898\uff0c\u9700\u8981\u4fee\u6539 meta \u7684 version \u4fe1\u606f\uff0c\u5229\u7528 version \u4fe1\u606f\u6765\u533a\u5206\u65b0\u8001\u7248\u672c\u7684 state\uff0c\u4ece\u800c\u505a\u5230 state \u7684\u5411\u524d\u517c\u5bb9\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/pic1.zhimg.com\/80\/v2-d36d1c6b130eb9bdd7e0079744fb4674_720w.webp\" alt=\"\"\/><\/figure>\n\n\n\n<p>\u5728 aggregate \u7684\u573a\u666f\u4e0b\uff0c\u7528\u6237\u53ef\u80fd\u4f1a\u901a\u8fc7\u8bbe\u7f6e state TTL \u6765\u63a7\u5236\u65e0\u6548 state \u7684\u6e05\u7406\uff0caggregate state \u517c\u5bb9\u4e5f\u8981\u5bf9\u8fd9\u4e2a\u573a\u666f\u505a\u5904\u7406\uff0c\u4fdd\u8bc1\u8fc1\u79fb\u4e4b\u540e\u7684\u72b6\u6001\uff0cTTL \u7684\u65f6\u95f4\u6233\u8981\u548c\u539f\u6765\u7684\u6570\u636e\u4fdd\u6301\u4e00\u81f4\uff0c\u4e0d\u80fd\u505a\u4efb\u4f55\u6539\u53d8\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/pic1.zhimg.com\/80\/v2-39e0a6ddb8c6a578a7e603ca5602a0d8_720w.webp\" alt=\"\"\/><\/figure>\n\n\n\n<p>Aggregate state \u517c\u5bb9\u7684\u65b9\u6848\uff0c\u4f18\u70b9\u662f\u7528\u6237\u5b66\u4e60\u4f7f\u7528\u7684\u6210\u672c\u5f88\u4f4e\uff0c\u51e0\u4e4e\u65e0\u611f\u77e5\u3001\u4e0d\u4f9d\u8d56\u4efb\u4f55\u5916\u90e8\u7684\u670d\u52a1\u67b6\u6784\uff0c\u4e0d\u8db3\u662f\u5bf9 Flink \u6e90\u7801\u6709\u4fb5\u5165\uff0c\u589e\u52a0\u4e86\u672a\u6765\u5347\u7ea7 Flink \u7248\u672c\u7684\u6210\u672c\uff0c\u800c\u4e14\u76ee\u524d\u53ea\u80fd\u652f\u6301\u805a\u5408\u7c7b\u8ba1\u7b97\u573a\u666f\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/pic2.zhimg.com\/80\/v2-13d66049c087151724b518d296e6d51d_720w.webp\" alt=\"\"\/><\/figure>\n\n\n\n<p>\u6700\u540e\u4ecb\u7ecd\u4e00\u4e0b\u5feb\u624b\u6b63\u5728\u505a\u7684\u72b6\u6001\u517c\u5bb9\u7684\u7ec8\u6781\u65b9\u6848\u3002\u7528\u6237\u53ef\u4ee5\u5728 Savepoint \u7684\u4efb\u610f\u4f4d\u7f6e\u589e\u52a0\u3001\u5220\u9664 state\u3001\u751a\u81f3\u662f\u4fee\u6539 state \u4e2d\u7684\u5185\u5bb9\uff1b\u8fd8\u53ef\u4ee5\u81ea\u5b9a\u4e49\u4e00\u4efd\u5b8c\u6574\u7684 state\uff0c\u6bd4\u5982 Flink on hudi \u4efb\u52a1\u7684 state \u521d\u59cb\u5316\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/pic3.zhimg.com\/80\/v2-36c6af10ab59f6848ef3f37604840b4e_720w.webp\" alt=\"\"\/><\/figure>\n\n\n\n<p>\u7ec8\u6781\u65b9\u6848\u7684\u4f18\u70b9\u662f\u4e0d\u4fb5\u5165 Flink \u7684\u6e90\u7801\uff0c\u65b9\u4fbf Flink \u7248\u672c\u5347\u7ea7\uff0c\u7528\u6237\u53ef\u4ee5\u5728\u5e73\u53f0\u754c\u9762\u64cd\u4f5c\uff0c\u4e0d\u9700\u8981\u5f00\u53d1\u4ee3\u7801\u4ee5\u53ca\u652f\u6301\u5168\u573a\u666f\u7684 state \u517c\u5bb9\uff0c\u4e0d\u518d\u5c40\u9650\u4e8e\u5177\u4f53\u7684\u573a\u666f\u3002\u4e0d\u8db3\u662f\u5bf9\u4e8e\u7528\u6237\u6765\u8bf4\u5b66\u4e60\u6210\u672c\u6bd4\u8f83\u9ad8\uff0c\u9700\u8981\u4e86\u89e3 Operator State \u548c keyedState \u8fd9\u4e9b\u6bd4\u8f83\u4e13\u4e1a\u7684\u77e5\u8bc6\u70b9\uff0c\u800c\u4e14\u8fd8\u8981\u77e5\u9053 Operator \u91cc\u9762\u662f\u5426\u5305\u542b state\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E4%BA%94%E3%80%81%E6%9C%AA%E6%9D%A5%E5%B1%95%E6%9C%9B\"><\/span>\u4e94\u3001\u672a\u6765\u5c55\u671b<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/pic3.zhimg.com\/80\/v2-a11b91b8fcdea7b5a24ec9021f4dc96e_720w.webp\" alt=\"\"\/><\/figure>\n\n\n\n<p>\u672a\u6765\uff0c\u5feb\u624b\u4f1a\u5728 Stream SQL \u65b9\u5411\u6301\u7eed\u6269\u5c55\u529f\u80fd\uff0c\u63d0\u5347\u6027\u80fd\uff0c\u8fbe\u5230\u964d\u672c\u589e\u6548\u7684\u76ee\u7684\uff0c\u4ee5\u53ca\u63a2\u7d22\u66f4\u591a\u573a\u666f\u4e0b\u7684\u72b6\u6001\u517c\u5bb9\uff1b\u6d41\u6279\u4e00\u63d0\u65b9\u9762\uff0c\u5feb\u624b\u5c06\u4f1a\u5b8c\u5584 Flink Batch SQL \u7684\u80fd\u529b\uff0c\u589e\u52a0\u63a8\u6d4b\u6267\u884c\u3001\u81ea\u9002\u5e94\u67e5\u8be2\u7b49\u4f18\u5316\uff0c\u63d0\u5347 Batch SQL \u7684\u7a33\u5b9a\u6027\u548c\u6027\u80fd\uff0c\u7ee7\u7eed\u62d3\u5bbd\u4e1a\u52a1\u5e94\u7528\u573a\u666f\uff1b\u5728\u6570\u636e\u6e56\u548c\u5b9e\u65f6\u6570\u4ed3\u65b9\u9762\uff0c\u4f1a\u7ee7\u7eed\u63a8\u52a8\u5b83\u4eec\u5728\u66f4\u591a\u4e1a\u52a1\u573a\u666f\u4e0b\u7684\u843d\u5730\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>FFA 2021 \u76f4\u64ad\u56de\u653e &amp; \u6f14\u8bb2 PDF \u4e0b\u8f7d \u4e00\u3001Flink SQL \u5728\u5feb\u624b \u7ecf\u8fc7\u4e00\u5e74&hellip; <a href=\"http:\/\/viplao.com\/index.php\/2023\/06\/22\/flink-sql-%e5%9c%a8%e5%bf%ab%e6%89%8b%e7%9a%84%e6%89%a9%e5%b1%95%e5%92%8c%e5%ae%9e%e8%b7%b5\/\" class=\"more-link read-more\" rel=\"bookmark\">\u7ee7\u7eed\u9605\u8bfb <span class=\"screen-reader-text\">Flink SQL &#8211; \u5728\u5feb\u624b\u7684\u6269\u5c55\u548c\u5b9e\u8df5<\/span><i class=\"fa fa-arrow-right\"><\/i><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[1],"tags":[25],"views":1068,"_links":{"self":[{"href":"http:\/\/viplao.com\/index.php\/wp-json\/wp\/v2\/posts\/2040"}],"collection":[{"href":"http:\/\/viplao.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/viplao.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/viplao.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/viplao.com\/index.php\/wp-json\/wp\/v2\/comments?post=2040"}],"version-history":[{"count":1,"href":"http:\/\/viplao.com\/index.php\/wp-json\/wp\/v2\/posts\/2040\/revisions"}],"predecessor-version":[{"id":2041,"href":"http:\/\/viplao.com\/index.php\/wp-json\/wp\/v2\/posts\/2040\/revisions\/2041"}],"wp:attachment":[{"href":"http:\/\/viplao.com\/index.php\/wp-json\/wp\/v2\/media?parent=2040"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/viplao.com\/index.php\/wp-json\/wp\/v2\/categories?post=2040"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/viplao.com\/index.php\/wp-json\/wp\/v2\/tags?post=2040"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}