{"id":1338,"date":"2023-03-19T17:53:00","date_gmt":"2023-03-19T09:53:00","guid":{"rendered":"http:\/\/viplao.com\/?p=1338"},"modified":"2023-03-19T17:53:11","modified_gmt":"2023-03-19T09:53:11","slug":"%e3%80%90%e8%bf%90%e7%bb%b4%e5%b7%a5%e5%85%b7%e3%80%91flink-sql-%e5%ae%9e%e8%b7%b510-%e7%94%a8-cumulate-window-%e8%ae%a1%e7%ae%97%e7%b4%af%e8%ae%a1%e6%8c%87%e6%a0%87","status":"publish","type":"post","link":"http:\/\/viplao.com\/index.php\/2023\/03\/19\/%e3%80%90%e8%bf%90%e7%bb%b4%e5%b7%a5%e5%85%b7%e3%80%91flink-sql-%e5%ae%9e%e8%b7%b510-%e7%94%a8-cumulate-window-%e8%ae%a1%e7%ae%97%e7%b4%af%e8%ae%a1%e6%8c%87%e6%a0%87\/","title":{"rendered":"\u3010\u8fd0\u7ef4\u5de5\u5177\u3011Flink SQL \u5b9e\u8df510 \u7528 cumulate window \u8ba1\u7b97\u7d2f\u8ba1\u6307\u6807"},"content":{"rendered":"\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\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 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href=\"http:\/\/viplao.com\/index.php\/2023\/03\/19\/%e3%80%90%e8%bf%90%e7%bb%b4%e5%b7%a5%e5%85%b7%e3%80%91flink-sql-%e5%ae%9e%e8%b7%b510-%e7%94%a8-cumulate-window-%e8%ae%a1%e7%ae%97%e7%b4%af%e8%ae%a1%e6%8c%87%e6%a0%87\/#2%E5%BA%94%E7%94%A8%E5%9C%BA%E6%99%AF%E4%BB%8B%E7%BB%8D\" title=\"2.\u5e94\u7528\u573a\u666f\u4ecb\u7ecd\">2.\u5e94\u7528\u573a\u666f\u4ecb\u7ecd<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"http:\/\/viplao.com\/index.php\/2023\/03\/19\/%e3%80%90%e8%bf%90%e7%bb%b4%e5%b7%a5%e5%85%b7%e3%80%91flink-sql-%e5%ae%9e%e8%b7%b510-%e7%94%a8-cumulate-window-%e8%ae%a1%e7%ae%97%e7%b4%af%e8%ae%a1%e6%8c%87%e6%a0%87\/#3%E9%A2%84%E6%9C%9F%E7%9A%84%E6%95%88%E6%9E%9C\" title=\"3.\u9884\u671f\u7684\u6548\u679c\">3.\u9884\u671f\u7684\u6548\u679c<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"http:\/\/viplao.com\/index.php\/2023\/03\/19\/%e3%80%90%e8%bf%90%e7%bb%b4%e5%b7%a5%e5%85%b7%e3%80%91flink-sql-%e5%ae%9e%e8%b7%b510-%e7%94%a8-cumulate-window-%e8%ae%a1%e7%ae%97%e7%b4%af%e8%ae%a1%e6%8c%87%e6%a0%87\/#4%E8%A7%A3%E5%86%B3%E6%96%B9%E6%A1%88%E4%BB%8B%E7%BB%8D\" title=\"4.\u89e3\u51b3\u65b9\u6848\u4ecb\u7ecd\">4.\u89e3\u51b3\u65b9\u6848\u4ecb\u7ecd<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"http:\/\/viplao.com\/index.php\/2023\/03\/19\/%e3%80%90%e8%bf%90%e7%bb%b4%e5%b7%a5%e5%85%b7%e3%80%91flink-sql-%e5%ae%9e%e8%b7%b510-%e7%94%a8-cumulate-window-%e8%ae%a1%e7%ae%97%e7%b4%af%e8%ae%a1%e6%8c%87%e6%a0%87\/#41flink_113_%E4%B9%8B%E5%89%8D\" title=\"4.1.flink 1.13 \u4e4b\u524d\">4.1.flink 1.13 \u4e4b\u524d<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"http:\/\/viplao.com\/index.php\/2023\/03\/19\/%e3%80%90%e8%bf%90%e7%bb%b4%e5%b7%a5%e5%85%b7%e3%80%91flink-sql-%e5%ae%9e%e8%b7%b510-%e7%94%a8-cumulate-window-%e8%ae%a1%e7%ae%97%e7%b4%af%e8%ae%a1%e6%8c%87%e6%a0%87\/#42flink_113_%E5%8F%8A%E4%B9%8B%E5%90%8E\" title=\"4.2.flink 1.13 \u53ca\u4e4b\u540e\">4.2.flink 1.13 \u53ca\u4e4b\u540e<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"http:\/\/viplao.com\/index.php\/2023\/03\/19\/%e3%80%90%e8%bf%90%e7%bb%b4%e5%b7%a5%e5%85%b7%e3%80%91flink-sql-%e5%ae%9e%e8%b7%b510-%e7%94%a8-cumulate-window-%e8%ae%a1%e7%ae%97%e7%b4%af%e8%ae%a1%e6%8c%87%e6%a0%87\/#43cumulate_window_%E5%8E%9F%E7%90%86%E8%A7%A3%E6%9E%90\" title=\"4.3.cumulate window \u539f\u7406\u89e3\u6790\">4.3.cumulate window \u539f\u7406\u89e3\u6790<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"http:\/\/viplao.com\/index.php\/2023\/03\/19\/%e3%80%90%e8%bf%90%e7%bb%b4%e5%b7%a5%e5%85%b7%e3%80%91flink-sql-%e5%ae%9e%e8%b7%b510-%e7%94%a8-cumulate-window-%e8%ae%a1%e7%ae%97%e7%b4%af%e8%ae%a1%e6%8c%87%e6%a0%87\/#44cumulate_window_%E6%80%8E%E4%B9%88%E8%A7%A3%E5%86%B3_tumble_window_early-fire_%E7%9A%84%E9%97%AE%E9%A2%98\" title=\"4.4.cumulate window \u600e\u4e48\u89e3\u51b3 tumble window + early-fire \u7684\u95ee\u9898\">4.4.cumulate window \u600e\u4e48\u89e3\u51b3 tumble window + early-fire \u7684\u95ee\u9898<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"http:\/\/viplao.com\/index.php\/2023\/03\/19\/%e3%80%90%e8%bf%90%e7%bb%b4%e5%b7%a5%e5%85%b7%e3%80%91flink-sql-%e5%ae%9e%e8%b7%b510-%e7%94%a8-cumulate-window-%e8%ae%a1%e7%ae%97%e7%b4%af%e8%ae%a1%e6%8c%87%e6%a0%87\/#5%E6%80%BB%E7%BB%93\" title=\"5.\u603b\u7ed3\">5.\u603b\u7ed3<\/a><\/li><\/ul><\/nav><\/div>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"1%E5%BA%8F%E7%AF%87\"><\/span>1.\u5e8f\u7bc7<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>\u6e90\u7801\u516c\u4f17\u53f7\u540e\u53f0\u56de\u590d<strong>1.13.2 cumulate window \u7684\u5947\u5999\u89e3\u6790\u4e4b\u8def<\/strong>\u83b7\u53d6\u3002<\/p>\n\n\n\n<p>\u6b64\u8282\u5c31\u662f\u7a97\u53e3\u805a\u5408\u7ae0\u8282\u7684\u7b2c\u4e09\u7bc7\uff0c\u4e0a\u8282\u4ecb\u7ecd\u4e86 1.13 window tvf tumble window \u5b9e\u73b0\uff0c\u672c\u8282\u4e3b\u8981\u4ecb\u7ecd 1.13. window tvf \u7684\u4e00\u4e2a\u91cd\u78c5\u66f4\u65b0\uff0c\u5373 cumulate window\u3002<\/p>\n\n\n\n<p>\u672c\u8282\u4ece\u4ee5\u4e0b\u51e0\u4e2a\u7ae0\u8282\u7ed9\u5927\u5bb6\u8be6\u7ec6\u4ecb\u7ecd cumulate window \u7684\u80fd\u529b\u3002<\/p>\n\n\n\n<ol>\n<li>\u5e94\u7528\u573a\u666f\u4ecb\u7ecd<\/li>\n\n\n\n<li>\u9884\u671f\u7684\u6548\u679c<\/li>\n\n\n\n<li>\u89e3\u51b3\u65b9\u6848\u4ecb\u7ecd<\/li>\n\n\n\n<li>\u603b\u7ed3\u53ca\u5c55\u671b\u7bc7<\/li>\n<\/ol>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"2%E5%BA%94%E7%94%A8%E5%9C%BA%E6%99%AF%E4%BB%8B%E7%BB%8D\"><\/span>2.\u5e94\u7528\u573a\u666f\u4ecb\u7ecd<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>\u5148\u6765\u4e00\u4e2a\u7b80\u5355\u7684\u5c0f\u8c03\u67e5\uff1a\u5728\u5b9e\u65f6\u573a\u666f\u4e2d\uff0c\u4f60\u89c1\u5230\u8fc7\u6700\u591a\u7684\u6307\u6807\u9700\u6c42\u573a\u666f\u662f\u54ea\u4e00\u79cd\uff1f<\/p>\n\n\n\n<p>\u7b54\u6848\uff1a\u535a\u4e3b\u76f8\u4fe1\uff0c\u5360\u6bd4\u6bd4\u8f83\u591a\u7684\u4e0d\u662f PCU\uff08\u5373\u540c\u65f6\u5728\u7ebf PV\uff0cUV\uff09\uff0c\u800c\u662f\u5468\u671f\u5185\u7d2f\u8ba1 PV\uff0cUV \u6307\u6807\uff08\u5982\u6bcf\u5929\u7d2f\u8ba1\u5230\u5f53\u524d\u8fd9\u4e00\u5206\u949f\u7684 PV\uff0cUV\uff09\u3002\u56e0\u4e3a\u8fd9\u7c7b\u6307\u6807\u662f\u4e00\u6bb5\u5468\u671f\u5185\u7684\u7d2f\u8ba1\u72b6\u6001\uff0c\u5bf9\u5206\u6790\u5e08\u6765\u8bf4\u66f4\u5177\u7edf\u8ba1\u5206\u6790\u4ef7\u503c\uff0c\u800c\u4e14\u51e0\u4e4e\u6240\u6709\u7684\u590d\u5408\u6307\u6807\u90fd\u662f\u57fa\u4e8e\u6b64\u7c7b\u6307\u6807\u7684\u7edf\u8ba1\uff08\u4e0d\u7136\u79bb\u7ebf\u4e3a\u5565\u90fd\u8981\u4e00\u5929\u7684\u6570\u636e\uff0c\u800c\u4e0d\u8981\u4e00\u5206\u949f\u7684\u6570\u636e\u5462\uff09\u3002<\/p>\n\n\n\n<p>\u672c\u6587\u8981\u4ecb\u7ecd\u7684\u5c31\u662f\u5468\u671f\u5185\u7d2f\u8ba1 PV\uff0cUV \u6307\u6807\u5728 flink 1.13 \u7248\u672c\u7684\u6700\u4f18\u89e3\u51b3\u65b9\u6848\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"3%E9%A2%84%E6%9C%9F%E7%9A%84%E6%95%88%E6%9E%9C\"><\/span>3.\u9884\u671f\u7684\u6548\u679c<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>\u5148\u6765\u4e00\u4e2a\u5b9e\u9645\u6848\u4f8b\u6765\u770b\u770b\u5728\u5177\u4f53\u8f93\u5165\u503c\u7684\u573a\u666f\u4e0b\uff0c\u8f93\u51fa\u503c\u5e94\u8be5\u957f\u5565\u6837\u3002<\/p>\n\n\n\n<p>\u6307\u6807\uff1a\u6bcf\u5929\u7684\u622a\u6b62\u5f53\u524d\u5206\u949f\u7684\u7d2f\u8ba1 money\uff08sum(money)\uff09\uff0c\u53bb\u91cd id \u6570\uff08count(distinct id)\uff09\u3002<strong>\u6bcf\u5929<\/strong>\u4ee3\u8868\u7a97\u53e3\u5927\u5c0f\u4e3a 1 \u5929\uff0c<strong>\u5206\u949f<\/strong>\u4ee3\u8868\u79fb\u52a8\u6b65\u957f\u4e3a\u5206\u949f\u7ea7\u522b\u3002<\/p>\n\n\n\n<p>\u6765\u4e00\u6ce2\u8f93\u5165\u6570\u636e\uff1a<\/p>\n\n\n\n<p>\u9884\u671f\u8f93\u51fa\u6570\u636e\uff1a<\/p>\n\n\n\n<p>\u8f6c\u5316\u4e3a\u6298\u7ebf\u56fe\u957f\u8fd9\u6837\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/pic4.zhimg.com\/80\/v2-554762abca99f217113cdca73cbe8c0f_720w.webp\" alt=\"\"\/><\/figure>\n\n\n\n<p>\u5f53\u65e5\u7d2f\u8ba1<\/p>\n\n\n\n<p>\u53ef\u4ee5\u770b\u5230\uff0c\u5176\u7279\u70b9\u5c31\u5728\u4e8e\uff0c\u6bcf\u4e00\u5206\u949f\u7684\u8f93\u51fa\u7ed3\u679c\u90fd\u662f\u5f53\u5929\u96f6\u70b9\u7d2f\u8ba1\u5230\u5f53\u524d\u7684\u7ed3\u679c\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"4%E8%A7%A3%E5%86%B3%E6%96%B9%E6%A1%88%E4%BB%8B%E7%BB%8D\"><\/span>4.\u89e3\u51b3\u65b9\u6848\u4ecb\u7ecd<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"41flink_113_%E4%B9%8B%E5%89%8D\"><\/span>4.1.flink 1.13 \u4e4b\u524d<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>\u53ef\u9009\u7684\u89e3\u51b3\u65b9\u6848\u6709\u4e24\u79cd<\/p>\n\n\n\n<ol>\n<li>tumble window\uff081\u5929\u7a97\u53e3\uff09 + early-fire\uff081\u5206\u949f\uff09<\/li>\n\n\n\n<li>group by\uff081\u5929\uff09 + minibatch\uff081\u5206\u949f\uff09<\/li>\n<\/ol>\n\n\n\n<p>\u4f46\u662f\u4e0a\u8ff0\u4e24\u79cd\u89e3\u51b3\u65b9\u6848\u4ea7\u51fa\u7684\u90fd\u662f retract \u6d41\uff0c\u5173\u4e8e retract \u6d41\u5b58\u5728\u7684\u7f3a\u70b9\u89c1\u5982\u4e0b\u6587\u7ae0\uff1a<\/p>\n\n\n\n<p><a href=\"https:\/\/link.zhihu.com\/?target=http%3A\/\/mp.weixin.qq.com\/s%3F__biz%3DMzkxNjA1MzM5OQ%3D%3D%26mid%3D2247487969%26idx%3D1%26sn%3D7215b101f49bd5e62b81a746dc6b15e6%26chksm%3Dc1549d19f623140f84cd436dd02be7e6ae08e28e5117bff88166237c09c17ca491a3e88a3a3d%26scene%3D21%23wechat_redirect\" target=\"_blank\" rel=\"noreferrer noopener\">\u8e29\u5751\u8bb0 | flink sql count \u8fd8\u6709\u8fd9\u79cd\u5751\uff01<\/a><\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/pic2.zhimg.com\/80\/v2-59e7a1427ac2159d815911844cad0d19_720w.webp\" alt=\"\"\/><\/figure>\n\n\n\n<p>\u5e76\u4e14 tumble window + early-fire \u7684\u89e6\u53d1\u673a\u5236\u662f\u57fa\u4e8e\u5904\u7406\u65f6\u95f4\u800c\u975e\u4e8b\u4ef6\u65f6\u95f4\uff0c\u5177\u4f53\u7f3a\u70b9\u89c1\u5982\u4e0b\u6587\u7ae0\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-embed\"><div class=\"wp-block-embed__wrapper\">\nhttps:\/\/mp.weixin.qq.com\/s\/L8-RSS6v3Ppts60CWngiOA\n<\/div><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"42flink_113_%E5%8F%8A%E4%B9%8B%E5%90%8E\"><\/span>4.2.flink 1.13 \u53ca\u4e4b\u540e<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>\u8bde\u751f\u4e86 cumulate window \u89e3\u6cd5\uff0c\u5177\u4f53\u89c1\u5b98\u7f51\u94fe\u63a5\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-embed\"><div class=\"wp-block-embed__wrapper\">\nhttps:\/\/nightlies.apache.org\/flink\/flink-docs-release-1.13\/docs\/dev\/table\/sql\/queries\/window-tvf\/#cumulate\n<\/div><\/figure>\n\n\n\n<p>\u5982\u4e0b\u5b98\u7f51\u6587\u6863\u6240\u793a\uff0c\u4ecb\u7ecd cumulate window \u7684\u7b2c\u4e00\u53e5\u8bdd\u5c31\u662f cumulate window \u975e\u5e38\u9002\u5408\u4e8e\u4e4b\u524d\u4f7f\u7528 tumble window + early-fire \u7684\u573a\u666f\u3002\u53ef\u4ee5\u8bf4 cumulate window \u5c31\u662f\u5728\u7528\u6237\u8ba1\u7b97\u5468\u671f\u5185\u7d2f\u8ba1 PV\uff0cUV \u6307\u6807\u65f6\uff0c\u4f7f\u7528\u4e86 tumble window + early-fire \u540e\u53d1\u73b0\u8fd9\u79cd\u65b9\u6848\u5b58\u5728\u4e86\u5f88\u591a\u5751\u7684\u60c5\u51b5\u4e0b\uff0c\u800c\u8bde\u751f\u7684\uff01<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/pic4.zhimg.com\/80\/v2-4797be3791b9a8873bb736dac1796c93_720w.webp\" alt=\"\"\/><\/figure>\n\n\n\n<p>cumulate window<\/p>\n\n\n\n<p>\u5176\u8ba1\u7b97\u673a\u5236\u5982\u4e0b\u56fe\u6240\u793a\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/pic1.zhimg.com\/80\/v2-88f69ea80c78997219f053cea412c0cc_720w.webp\" alt=\"\"\/><\/figure>\n\n\n\n<p>cumulate window<\/p>\n\n\n\n<p>\u8fd8\u662f\u4ee5\u521a\u521a\u7684\u6848\u4f8b\u8bf4\u660e\uff0c\u4ee5\u5929\u4e3a\u7a97\u53e3\uff0c\u6bcf\u5206\u949f\u8f93\u51fa\u4e00\u6b21\u5f53\u5929\u96f6\u70b9\u5230\u5f53\u524d\u5206\u949f\u7684\u7d2f\u8ba1\u503c\uff0c\u5728 cumulate window \u4e2d\uff0c\u5176\u7a97\u53e3\u5212\u5206\u89c4\u5219\u5982\u4e0b\uff1a<\/p>\n\n\n\n<ul>\n<li>[2021-11-01 00:00:00, 2021-11-01 00:01:00]<br><\/li>\n\n\n\n<li>[2021-11-01 00:00:00, 2021-11-01 00:02:00]<br><\/li>\n\n\n\n<li>[2021-11-01 00:00:00, 2021-11-01 00:03:00]<br>&#8230;<br><\/li>\n\n\n\n<li>[2021-11-01 00:00:00, 2021-11-01 23:58:00]<br><\/li>\n\n\n\n<li>[2021-11-01 00:00:00, 2021-11-01 23:59:00]<br><\/li>\n<\/ul>\n\n\n\n<p>\u7b2c\u4e00\u4e2a window \u7edf\u8ba1\u7684\u662f\u4e00\u4e2a\u533a\u95f4\u7684\u6570\u636e\uff1b\u7b2c\u4e8c\u4e2a window \u7edf\u8ba1\u7684\u662f\u7b2c\u4e00\u533a\u95f4\u548c\u7b2c\u4e8c\u4e2a\u533a\u95f4\u7684\u6570\u636e\uff1b\u7b2c\u4e09\u4e2a window \u7edf\u8ba1\u7684\u662f\u7b2c\u4e00\u533a\u95f4\uff0c\u7b2c\u4e8c\u4e2a\u533a\u95f4\u548c\u7b2c\u4e09\u4e2a\u533a\u95f4\u7684\u6570\u636e\u3002<\/p>\n\n\n\n<p>\u90a3\u4e48\u4ee5 cumulate window \u5b9e\u73b0\u4e0a\u8ff0\u7684\u9700\u6c42\uff0c\u5177\u4f53\u7684 SQL \u5982\u4e0b\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>SELECT UNIX_TIMESTAMP(CAST(window_end AS STRING)) * 1000 as window_end, \n      window_start, \n      sum(money) as sum_money,\n      count(distinct id) as count_distinct_id\nFROM TABLE(CUMULATE(\n         TABLE source_table\n         , DESCRIPTOR(row_time)\n         , INTERVAL '60' SECOND\n         , INTERVAL '1' DAY))\nGROUP BY window_start, \n        window_end\n<\/code><\/pre>\n\n\n\n<p>\u5176\u4e2d&nbsp;<code>CUMULATE(TABLE source_table, DESCRIPTOR(row_time), INTERVAL '60' SECOND, INTERVAL '1' DAY)<\/code>&nbsp;\u4e2d\u7684<code>INTERVAL '1' DAY<\/code>&nbsp;\u4ee3\u8868\u7a97\u53e3\u5927\u5c0f\u4e3a 1 \u5929\uff0c<code>INTERVAL '60' SECOND<\/code>\uff0c\u7a97\u53e3\u5212\u5206\u6b65\u957f\u4e3a 60s\u3002<\/p>\n\n\n\n<p>\u5176\u4e2d&nbsp;<code>window_start, window_end<\/code>&nbsp;\u5b57\u6bb5\u662f cumulate window \u81ea\u52a8\u751f\u6210\u7684\u7c7b\u578b\u662f timestamp(3)\u3002<\/p>\n\n\n\n<p><code>window_start<\/code>&nbsp;\u56fa\u5b9a\u4e3a\u7a97\u53e3\u7684\u5f00\u59cb\u65f6\u95f4\u3002<code>window_end<\/code>&nbsp;\u4e3a\u4e00\u4e2a\u5b50\u7a97\u53e3\u7684\u7ed3\u675f\u65f6\u95f4\u3002<\/p>\n\n\n\n<p>\u6700\u7ec8\u7ed3\u679c\u5982\u4e0b\u3002<\/p>\n\n\n\n<p>\u8f93\u5165\u6570\u636e\uff1a<\/p>\n\n\n\n<p>\u8f93\u51fa\u6570\u636e\uff1a<\/p>\n\n\n\n<blockquote class=\"wp-block-quote\">\n<p>Notes\uff1a\u5929\u7ea7\u522b\u7a97\u53e3\u5212\u5206\u7684\u65f6\u5019\u4e00\u5b9a\u8981\u6ce8\u610f\u65f6\u533a\u95ee\u9898\u5594\uff01<a href=\"https:\/\/link.zhihu.com\/?target=https%3A\/\/nightlies.apache.org\/flink\/flink-docs-master\/zh\/docs\/dev\/table\/timezone\/\" target=\"_blank\" rel=\"noreferrer noopener\">https:\/\/nightlies.apache.org\/flink\/flink-docs-master\/zh\/docs\/dev\/table\/timezone\/<\/a><\/p>\n<\/blockquote>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"43cumulate_window_%E5%8E%9F%E7%90%86%E8%A7%A3%E6%9E%90\"><\/span>4.3.cumulate window \u539f\u7406\u89e3\u6790<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>\u9996\u5148 cumulate window \u662f\u4e00\u4e2a\u7a97\u53e3\uff0c\u5176\u7a97\u53e3\u8ba1\u7b97\u7684\u89e6\u53d1\u4e5f\u662f\u5b8c\u5168\u7531 watermark \u63a8\u52a8\u7684\u3002\u4e0e tumble window \u4e00\u6837\u3002<\/p>\n\n\n\n<p>\u4ee5\u4e0a\u8ff0\u5929\u7a97\u53e3\u5206\u949f\u7d2f\u8ba1\u6848\u4f8b\u4e3e\u4f8b\uff1acumulate window \u7ef4\u62a4\u4e86\u4e00\u4e2a slice state \u548c merged state\uff0cslice state \u5c31\u662f\u6bcf\u4e00\u5206\u949f\u5185\u7a97\u53e3\u6570\u636e\uff08\u53eb\u505a\u5207\u7247\uff09\uff0cmerged state \u7684\u4f5c\u7528\u662f\u5f53 watermark \u63a8\u52a8\u5230\u4e0b\u4e00\u5206\u949f\u65f6\uff0c\u8fd9\u4e00\u5206\u949f\u7684 slice state \u5c31\u4f1a\u88ab merge \u5230 merged stated \u4e2d\uff0c\u56e0\u6b64 merged state \u4e2d\u7684\u503c\u5c31\u662f\u5f53\u5929\u96f6\u70b9\u5230\u5f53\u524d\u8fd9\u4e00\u5206\u949f\u7684\u7d2f\u8ba1\u503c\uff0c\u6211\u4eec\u7684\u8f93\u51fa\u7ed3\u679c\u5c31\u662f\u4ece merged state \u5f97\u5230\u7684\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"44cumulate_window_%E6%80%8E%E4%B9%88%E8%A7%A3%E5%86%B3_tumble_window_early-fire_%E7%9A%84%E9%97%AE%E9%A2%98\"><\/span>4.4.cumulate window \u600e\u4e48\u89e3\u51b3 tumble window + early-fire \u7684\u95ee\u9898<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<ol>\n<li>\u95ee\u98981\uff1atumble window + early-fire \u5904\u7406\u65f6\u95f4\u89e6\u53d1\u7684\u95ee\u9898\u3002<\/li>\n<\/ol>\n\n\n\n<p>cumulate window \u53ef\u4ee5\u4ee5\u4e8b\u4ef6\u65f6\u95f4\u63a8\u8fdb\u8fdb\u884c\u89e6\u53d1\u3002<\/p>\n\n\n\n<ol>\n<li>\u95ee\u98981\uff1atumble window + early-fire retract \u6d41\u95ee\u9898\u3002<\/li>\n<\/ol>\n\n\n\n<p>cumulate window \u662f append \u6d41\uff0c\u81ea\u7136\u6ca1\u6709 retract \u6d41\u7684\u95ee\u9898\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"5%E6%80%BB%E7%BB%93\"><\/span>5.\u603b\u7ed3<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>\u6e90\u7801\u516c\u4f17\u53f7\u540e\u53f0\u56de\u590d<strong>1.13.2 cumulate window \u7684\u5947\u5999\u89e3\u6790\u4e4b\u8def<\/strong>\u83b7\u53d6\u3002<\/p>\n\n\n\n<p>\u672c\u6587\u4e3b\u8981\u4ecb\u7ecd\u4e86 window tvf \u5b9e\u73b0\u7684 cumulate window \u805a\u5408\u7c7b\u6307\u6807\u7684\u573a\u666f\u6848\u4f8b\u4ee5\u53ca\u5176\u8fd0\u884c\u539f\u7406\uff1a<\/p>\n\n\n\n<ol>\n<li>\u4ecb\u7ecd\u4e86\u5468\u671f\u5185\u7d2f\u8ba1 PV\uff0cUV \u662f\u6211\u4eec\u6700\u5e38\u7528\u7684\u6307\u6807\u573a\u666f\u8d28\u7591\u3002<\/li>\n\n\n\n<li>\u5728 tumble window + early-fire \u6216\u8005 groupby + minibatch \u8ba1\u7b97\u5468\u671f\u5185\u7d2f\u8ba1 PV\uff0cUV \u5b58\u5728\u5404\u79cd\u95ee\u9898\u662f\uff0c\u8bde\u751f\u4e86 cumulate window \u5e2e\u6211\u4eec\u89e3\u51b3\u4e86\u8fd9\u4e9b\u95ee\u9898\uff0c\u5e76\u4ee5\u4e00\u4e2a\u6848\u4f8b\u8fdb\u884c\u8bf4\u660e\u3002<\/li>\n<\/ol>\n","protected":false},"excerpt":{"rendered":"<p>1.\u5e8f\u7bc7 \u6e90\u7801\u516c\u4f17\u53f7\u540e\u53f0\u56de\u590d1.13.2 cumulate window \u7684\u5947\u5999\u89e3\u6790\u4e4b\u8def\u83b7\u53d6\u3002 \u6b64\u8282&hellip; <a href=\"http:\/\/viplao.com\/index.php\/2023\/03\/19\/%e3%80%90%e8%bf%90%e7%bb%b4%e5%b7%a5%e5%85%b7%e3%80%91flink-sql-%e5%ae%9e%e8%b7%b510-%e7%94%a8-cumulate-window-%e8%ae%a1%e7%ae%97%e7%b4%af%e8%ae%a1%e6%8c%87%e6%a0%87\/\" class=\"more-link read-more\" rel=\"bookmark\">\u7ee7\u7eed\u9605\u8bfb <span class=\"screen-reader-text\">\u3010\u8fd0\u7ef4\u5de5\u5177\u3011Flink SQL \u5b9e\u8df510 \u7528 cumulate window \u8ba1\u7b97\u7d2f\u8ba1\u6307\u6807<\/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":945,"_links":{"self":[{"href":"http:\/\/viplao.com\/index.php\/wp-json\/wp\/v2\/posts\/1338"}],"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=1338"}],"version-history":[{"count":1,"href":"http:\/\/viplao.com\/index.php\/wp-json\/wp\/v2\/posts\/1338\/revisions"}],"predecessor-version":[{"id":1339,"href":"http:\/\/viplao.com\/index.php\/wp-json\/wp\/v2\/posts\/1338\/revisions\/1339"}],"wp:attachment":[{"href":"http:\/\/viplao.com\/index.php\/wp-json\/wp\/v2\/media?parent=1338"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/viplao.com\/index.php\/wp-json\/wp\/v2\/categories?post=1338"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/viplao.com\/index.php\/wp-json\/wp\/v2\/tags?post=1338"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}