{"id":1331,"date":"2023-03-19T17:41:49","date_gmt":"2023-03-19T09:41:49","guid":{"rendered":"http:\/\/viplao.com\/?p=1331"},"modified":"2023-03-19T17:42:30","modified_gmt":"2023-03-19T09:42:30","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%b58","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%b58\/","title":{"rendered":"\u3010\u8fd0\u7ef4\u5de5\u5177\u3011Flink SQL \u5b9e\u8df58 flink sql tumble window \u7684\u5947\u5999\u89e3\u6790\u4e4b\u8def"},"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 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 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title=\"2.\u76ee\u6807\u7bc7-\u672c\u6587\u80fd\u5e2e\u52a9\u5927\u5bb6\u4e86\u89e3 flink sql tumble window \u4ec0\u4e48\uff1f\">2.\u76ee\u6807\u7bc7-\u672c\u6587\u80fd\u5e2e\u52a9\u5927\u5bb6\u4e86\u89e3 flink sql tumble window \u4ec0\u4e48\uff1f<\/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%b58\/#21%E5%9B%9E%E9%A1%BE%E4%B8%8A%E8%8A%82%E7%9A%84_flink_sql_%E9%80%82%E7%94%A8%E5%9C%BA%E6%99%AF%E7%9A%84%E7%BB%93%E8%AE%BA\" title=\"2.1.\u56de\u987e\u4e0a\u8282\u7684 flink sql \u9002\u7528\u573a\u666f\u7684\u7ed3\u8bba\">2.1.\u56de\u987e\u4e0a\u8282\u7684 flink sql \u9002\u7528\u573a\u666f\u7684\u7ed3\u8bba<\/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%b58\/#3%E6%A6%82%E5%BF%B5%E7%AF%87-%E5%85%88%E8%81%8A%E8%81%8A%E5%B8%B8%E8%A7%81%E7%9A%84%E7%AA%97%E5%8F%A3%E8%81%9A%E5%90%88\" title=\"3.\u6982\u5ff5\u7bc7-\u5148\u804a\u804a\u5e38\u89c1\u7684\u7a97\u53e3\u805a\u5408\">3.\u6982\u5ff5\u7bc7-\u5148\u804a\u804a\u5e38\u89c1\u7684\u7a97\u53e3\u805a\u5408<\/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%b58\/#31%E7%AA%97%E5%8F%A3%E7%AB%9F%E7%84%B6%E6%8B%96%E6%85%A2%E6%95%B0%E6%8D%AE%E4%BA%A7%E5%87%BA%EF%BC%9F\" title=\"3.1.\u7a97\u53e3\u7adf\u7136\u62d6\u6162\u6570\u636e\u4ea7\u51fa\uff1f\">3.1.\u7a97\u53e3\u7adf\u7136\u62d6\u6162\u6570\u636e\u4ea7\u51fa\uff1f<\/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%b58\/#32%E5%B8%B8%E7%94%A8%E7%9A%84%E7%AA%97%E5%8F%A3\" title=\"3.2.\u5e38\u7528\u7684\u7a97\u53e3\">3.2.\u5e38\u7528\u7684\u7a97\u53e3<\/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%b58\/#4%E5%AE%9E%E6%88%98%E7%AF%87-%E7%AE%80%E5%8D%95%E7%9A%84_tumble_window_%E6%A1%88%E4%BE%8B%E5%92%8C%E8%BF%90%E8%A1%8C%E5%8E%9F%E7%90%86\" title=\"4.\u5b9e\u6218\u7bc7-\u7b80\u5355\u7684 tumble window \u6848\u4f8b\u548c\u8fd0\u884c\u539f\u7406\">4.\u5b9e\u6218\u7bc7-\u7b80\u5355\u7684 tumble window \u6848\u4f8b\u548c\u8fd0\u884c\u539f\u7406<\/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%b58\/#41%E5%85%88%E7%9C%8B%E4%B8%80%E4%B8%AA_datastream_%E7%AA%97%E5%8F%A3%E6%A1%88%E4%BE%8B\" title=\"4.1.\u5148\u770b\u4e00\u4e2a datastream \u7a97\u53e3\u6848\u4f8b\">4.1.\u5148\u770b\u4e00\u4e2a datastream \u7a97\u53e3\u6848\u4f8b<\/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%b58\/#42flink_sql_tumble_window_%E7%9A%84%E8%AF%AD%E4%B9%89\" title=\"4.2.flink sql tumble window \u7684\u8bed\u4e49\">4.2.flink sql tumble window \u7684\u8bed\u4e49<\/a><\/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\/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%b58\/#43tumble_window_%E5%AE%9E%E9%99%85%E6%A1%88%E4%BE%8B\" title=\"4.3.tumble window \u5b9e\u9645\u6848\u4f8b\">4.3.tumble window \u5b9e\u9645\u6848\u4f8b<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-11\" 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%b58\/#44GeneratedWatermarkGenerator_%E2%80%93_flink_1121\" title=\"4.4.GeneratedWatermarkGenerator &#8211; flink 1.12.1\">4.4.GeneratedWatermarkGenerator &#8211; flink 1.12.1<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-12\" 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%b58\/#45BinaryRowDataKeySelector_%E2%80%93_flink_1121\" title=\"4.5.BinaryRowDataKeySelector &#8211; flink 1.12.1\">4.5.BinaryRowDataKeySelector &#8211; flink 1.12.1<\/a><\/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\/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%b58\/#46AggregateWindowOperator_%E2%80%93_flink_1121\" title=\"4.6.AggregateWindowOperator &#8211; flink 1.12.1\">4.6.AggregateWindowOperator &#8211; flink 1.12.1<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-14\" 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%b58\/#5%E6%80%BB%E7%BB%93%E4%B8%8E%E5%B1%95%E6%9C%9B%E7%AF%87\" title=\"5.\u603b\u7ed3\u4e0e\u5c55\u671b\u7bc7\">5.\u603b\u7ed3\u4e0e\u5c55\u671b\u7bc7<\/a><\/li><\/ul><\/nav><\/div>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"1%E5%BA%8F%E7%AF%87-%E6%9C%AC%E6%96%87%E7%BB%93%E6%9E%84\"><\/span>1.\u5e8f\u7bc7-\u672c\u6587\u7ed3\u6784<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>\u6e90\u7801\u516c\u4f17\u53f7\u540e\u53f0\u56de\u590d<strong>flink sql tumble window \u7684\u5947\u5999\u89e3\u6790\u4e4b\u8def<\/strong>\u83b7\u53d6\u3002<\/p>\n\n\n\n<p>\u9488\u5bf9 datastream api \u5927\u5bb6\u90fd\u6bd4\u8f83\u719f\u6089\u4e86\uff0c\u8fd8\u662f\u90a3\u53e5\u8bdd\uff0c\u5728 datastream \u4e2d\uff0c\u4f60\u5199\u7684\u4ee3\u7801\u903b\u8f91\u662f\u4ec0\u4e48\u6837\u7684\uff0c\u5b83\u6700\u7ec8\u7684\u6267\u884c\u65b9\u5f0f\u5c31\u662f\u4ec0\u4e48\u6837\u7684\u3002<\/p>\n\n\n\n<p>\u4f46\u662f\u5bf9\u4e8e flink sql \u7684\u6267\u884c\u8fc7\u7a0b\uff0c\u5927\u5bb6\u8fd8\u662f\u4e0d\u719f\u6089\u7684\u3002\u4e0a\u8282\u4f7f\u7528 ETL\uff0cgroup agg\uff08sum\uff0ccount\u7b49\uff09\u7b80\u5355\u805a\u5408\u7c7b query \u5e26\u5927\u5bb6\u8d70\u8fdb\u4e00\u6761 flink sql query \u903b\u8f91\u7684\u4e16\u754c\u3002\u5e2e\u5927\u5bb6\u81f3\u5c11\u80fd\u591f\u719f\u6089\u5728 flink sql \u7a0b\u5e8f\u8fd0\u884c\u65f6\u77e5\u9053 flink \u7a0b\u5e8f\u5728\u5e72\u4ec0\u4e48\u3002<\/p>\n\n\n\n<p>\u6b64\u8282\u5c31\u662f\u7a97\u53e3\u805a\u5408\u7ae0\u8282\u7684\u7b2c\u4e00\u7bc7\uff0c\u4ee5\u4e00\u4e2a\u6700\u7b80\u5355\u3001\u6700\u5e38\u7528\u7684\u5206\u949f tumble window \u805a\u5408\u6848\u4f8b\u7ed9\u5927\u5bb6\u4ecb\u7ecd\u5176\u4f7f\u7528\u65b9\u5f0f\u548c\u539f\u7406\u3002<\/p>\n\n\n\n<p>\u7531\u4e8e flink 1.13 \u5f15\u5165\u4e86 window tvf\uff0c\u6240\u4ee5 1.13 \u548c 1.12 \u53ca\u4e4b\u524d\u7248\u672c\u7684\u5b9e\u73b0\u4e0d\u540c\u3002\u672c\u8282\u5148\u4ecb\u7ecd flink 1.12 \u53ca\u4e4b\u524d\u7684 tumble window \u5b9e\u73b0\u3002\u8fd9\u4e5f\u662f\u5927\u5bb6\u5728\u5f15\u5165 flink sql \u80fd\u529b\u65f6\u6700\u5e38\u4f7f\u7528\u7684\u3002<\/p>\n\n\n\n<p>\u672c\u8282\u4f9d\u7136\u4ece\u4ee5\u4e0b\u51e0\u4e2a\u7ae0\u8282\u7ed9\u5927\u5bb6\u8be6\u7ec6\u4ecb\u7ecd flink sql \u7684\u80fd\u529b\u3002<\/p>\n\n\n\n<ol>\n<li>\u76ee\u6807\u7bc7-\u672c\u6587\u80fd\u5e2e\u52a9\u5927\u5bb6\u4e86\u89e3 flink sql \u4ec0\u4e48\uff1f<\/li>\n<\/ol>\n\n\n\n<ul>\n<li>\u56de\u987e\u4e0a\u8282\u7684 flink sql \u9002\u7528\u573a\u666f\u7684\u7ed3\u8bba<\/li>\n\n\n\n<li>\u6982\u5ff5\u7bc7-\u5148\u804a\u804a\u5e38\u89c1\u7684\u7a97\u53e3\u805a\u5408<\/li>\n\n\n\n<li>\u7a97\u53e3\u7adf\u7136\u62d6\u6162\u6570\u636e\u4ea7\u51fa\uff1f<\/li>\n\n\n\n<li>\u5e38\u7528\u7684\u7a97\u53e3<\/li>\n\n\n\n<li>\u5b9e\u6218\u7bc7-\u7b80\u5355\u7684 tumble window \u6848\u4f8b\u548c\u8fd0\u884c\u539f\u7406<\/li>\n\n\n\n<li>\u5148\u770b\u4e00\u4e2a datastream \u7a97\u53e3\u6848\u4f8b<\/li>\n\n\n\n<li>flink sql tumble window \u7684\u8bed\u4e49<\/li>\n\n\n\n<li>tumble window \u5b9e\u9645\u6848\u4f8b<\/li>\n\n\n\n<li>GeneratedWatermarkGenerator &#8211; flink 1.12.1<\/li>\n\n\n\n<li>BinaryRowDataKeySelector &#8211; flink 1.12.1<\/li>\n\n\n\n<li>AggregateWindowOperator &#8211; flink 1.12.1<\/li>\n\n\n\n<li>\u603b\u7ed3\u4e0e\u5c55\u671b\u7bc7<\/li>\n<\/ul>\n\n\n\n<p><strong>\u5148\u8bf4\u8bf4\u7ed3\u8bba\uff0c\u4ee5\u4e0b\u8fd9\u4e9b\u7ed3\u8bba\u5df2\u7ecf\u5728\u4e0a\u8282\u8bf4\u8fc7\u4e86\uff0c\u6b64\u5904\u9644\u4e0a\u4e0a\u8282\u6587\u7ae0\uff1a<\/strong><\/p>\n\n\n\n<ol>\n<li><strong>\u573a\u666f\u95ee\u9898<\/strong>\uff1aflink sql \u5f88\u9002\u5408\u7b80\u5355 ETL\uff0c\u4ee5\u53ca\u57fa\u672c\u5168\u90e8\u573a\u666f\u4e0b\u7684\u805a\u5408\u7c7b\u6307\u6807\uff08\u672c\u8282\u8981\u4ecb\u7ecd\u7684 tumble window \u5c31\u5728\u805a\u5408\u7c7b\u6307\u6807\u7684\u8303\u7574\u4e4b\u5185\uff09\u3002<\/li>\n\n\n\n<li><strong>\u8bed\u6cd5\u95ee\u9898<\/strong>\uff1aflink sql \u8bed\u6cd5\u5176\u5b9e\u662f\u548c\u5176\u4ed6 sql \u8bed\u6cd5\u57fa\u672c\u4e00\u81f4\u7684\u3002\u57fa\u672c\u4e0d\u4f1a\u4ea7\u751f\u8bed\u6cd5\u95ee\u9898\u963b\u788d\u4f7f\u7528 flink sql\u3002\u4f46\u662f\u672c\u8282\u8981\u4ecb\u7ecd\u7684 tumble window \u7684\u8bed\u6cd5\u5c31\u662f\u7565\u6709\u4e0d\u540c\u7684\u90a3\u90e8\u5206\u3002\u4e0b\u9762\u8be6\u7ec6\u4ecb\u7ecd\u3002<\/li>\n\n\n\n<li><strong>\u8fd0\u884c\u95ee\u9898<\/strong>\uff1a\u67e5\u770b flink sql \u4efb\u52a1\u65f6\u7684\u4e00\u4e9b\u6280\u5de7\uff0c\u4ee5\u53ca\u5176\u4e2d\u4e00\u4e9b\u53ef\u80fd\u4f1a\u78b0\u5230\u7684\u5751\uff1a<\/li>\n<\/ol>\n\n\n\n<ul>\n<li>\u53bb flink webui \u5c31\u80fd\u770b\u5230\u8fd9\u4e2a\u4efb\u52a1\u76ee\u524d\u5728\u505a\u4ec0\u4e48\u3002\u5305\u62ec\u7b97\u5b50\u540d\u79f0\u90fd\u4f1a\u7ed9\u76f4\u63a5\u5c55\u793a\u7ed9\u6211\u4eec\u76ee\u524d\u54ea\u4e2a\u7b97\u5b50\u5728\u5e72\u5565\u4e8b\u60c5\uff0c\u5728\u5904\u7406\u5565\u903b\u8f91\u3002<\/li>\n\n\n\n<li>sql \u7684 watermark \u7c7b\u578b\u8981\u8bbe\u7f6e\u4e3a TIMESTAMP(3)\u3002<\/li>\n\n\n\n<li>\u4e8b\u4ef6\u65f6\u95f4\u903b\u8f91\u4e2d\uff0csql api \u548c datastream api \u5bf9\u4e8e\u6570\u636e\u8bb0\u5f55\u65f6\u95f4\u6233\u5b58\u50a8\u903b\u8f91\u662f\u4e0d\u4e00\u6837\u7684\u3002datastream api\uff1a\u6bcf\u6761\u8bb0\u5f55\u7684 rowtime \u662f\u653e\u5728 StreamRecord \u4e2d\u7684\u65f6\u95f4\u6233\u5b57\u6bb5\u4e2d\u7684\u3002sql api\uff1a\u65f6\u95f4\u6233\u662f\u6bcf\u6b21\u90fd\u4ece\u6570\u636e\u4e2d\u8fdb\u884c\u83b7\u53d6\u7684\u3002\u7b97\u5b50\u4e2d\u4f1a\u7ef4\u62a4\u4e00\u4e2a\u4e0b\u6807\u3002\u53ef\u4ee5\u6309\u7167\u4e0b\u6807\u4ece\u6570\u636e\u4e2d\u83b7\u53d6\u65f6\u95f4\u6233\u3002<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"2%E7%9B%AE%E6%A0%87%E7%AF%87-%E6%9C%AC%E6%96%87%E8%83%BD%E5%B8%AE%E5%8A%A9%E5%A4%A7%E5%AE%B6%E4%BA%86%E8%A7%A3_flink_sql_tumble_window_%E4%BB%80%E4%B9%88%EF%BC%9F\"><\/span>2.\u76ee\u6807\u7bc7-\u672c\u6587\u80fd\u5e2e\u52a9\u5927\u5bb6\u4e86\u89e3 flink sql tumble window \u4ec0\u4e48\uff1f<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>\u5173\u4e8e flink sql tumble window \u4e00\u822c\u90fd\u4f1a\u6709\u4ee5\u4e0b\u95ee\u9898\u3002\u672c\u6587\u7684\u76ee\u6807\u4e5f\u662f\u4e3a\u5927\u5bb6\u89e3\u7b54\u8fd9\u4e9b\u95ee\u9898\uff1a<\/p>\n\n\n\n<ol>\n<li><strong>\u573a\u666f\u95ee\u9898<\/strong>\uff1a\u573a\u666f\u95ee\u9898\u5c31\u4e0d\u5fc5\u591a\u8bf4\uff0cdatastream \u5728 tumble window \u573a\u666f\u4e0b\u7684\u5e94\u7528\u5f88\u591a\u4e86\uff0c\u5206\u949f\u7ea7\u522b\u805a\u5408\u7b49\u5e38\u7528\u573a\u666f<\/li>\n\n\n\n<li><strong>\u8bed\u6cd5\u95ee\u9898<\/strong>\uff1aflink sql \u5199 tumble window \u4efb\u52a1\u65f6\u662f\u4e00\u79cd\u4e0e hive sql \u4e2d\u6ca1\u6709\u7684\u8bed\u6cd5\u3002\u4e0b\u6587\u8be6\u7ec6\u4ecb\u7ecd\u3002<\/li>\n\n\n\n<li><strong>\u8fd0\u884c\u95ee\u9898<\/strong>\uff1a\u4f7f\u7528\u4e00\u6761\u7b80\u5355\u7684 tumble window sql \u5e2e\u5927\u5bb6\u4ece transformation\u3001runtime \u5e2e\u5927\u5bb6\u7406\u89e3 tumble window \u7684\u6574\u4f53\u8fd0\u884c\u673a\u5236\u3002<\/li>\n\n\n\n<li><strong>\u7406\u89e3\u8bef\u533a<\/strong>\uff1a\u65e2\u7136\u662f sql \u5fc5\u7136\u8981\u9075\u5faa sql \u8bed\u4e49\uff0csql tumble window \u805a\u5408\u662f\u8f93\u5165\u591a\u6761\uff0c\u4ea7\u51fa\u4e00\u6761\u6570\u636e\u3002\u5e76\u4e0d\u50cf datastream \u90a3\u6837\u53ef\u4ee5\u5728\u7a97\u53e3 udf \u4e2d\u505a\u5230\u591a\u5bf9\u591a\u3002<\/li>\n<\/ol>\n\n\n\n<p>\u5728\u6b63\u5f0f\u5f00\u59cb\u804a tumble window \u4e4b\u524d\uff0c\u5148\u770b\u770b\u4e0a\u8282 flink sql \u9002\u7528\u573a\u666f\u7684\u7ed3\u8bba\u3002\u8ba9\u5927\u5bb6\u5148\u6709 flink sql \u7684\u4e00\u4e2a\u6574\u4f53\u5370\u8c61\u4ee5\u53ca\u7ed3\u8bba\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"21%E5%9B%9E%E9%A1%BE%E4%B8%8A%E8%8A%82%E7%9A%84_flink_sql_%E9%80%82%E7%94%A8%E5%9C%BA%E6%99%AF%E7%9A%84%E7%BB%93%E8%AE%BA\"><\/span>2.1.\u56de\u987e\u4e0a\u8282\u7684 flink sql \u9002\u7528\u573a\u666f\u7684\u7ed3\u8bba<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>\u4e0d\u88c5\u4e86\uff0c\u6211\u5766\u767d\u4e86\uff0cflink sql \u5176\u5b9e\u5f88\u9002\u5408\u5e72\u7684\u6d3b\u5c31\u662f dwd \u6e05\u6d17\uff0cdws \u805a\u5408\u3002<\/p>\n\n\n\n<p>\u6b64\u5904\u4e3b\u8981\u9488\u5bf9\u5b9e\u65f6\u6570\u4ed3\u7684\u573a\u666f\u6765\u8bf4\u3002flink sql \u80fd\u5e72 dwd \u6e05\u6d17\uff0cdws \u805a\u5408\uff0c\u57fa\u672c\u4e0a\u5b9e\u65f6\u6570\u4ed3\u7684\u5927\u591a\u6570\u573a\u666f\u90fd\u80fd\u7ed9\u8986\u76d6\u4e86\u3002<\/p>\n\n\n\n<p>flink sql \u725b\u903c\uff01\uff01\uff01<\/p>\n\n\n\n<p>\u4f46\u662f\uff01\uff01\uff01<\/p>\n\n\n\n<p>\u7ecf\u8fc7\u535a\u4e3b\u4f7f\u7528 flink sql \u7ecf\u9a8c\u6765\u770b\uff0c\u5e76\u4e0d\u662f\u6240\u6709\u7684 dwd\uff0cdws \u805a\u5408\u573a\u666f\u90fd\u9002\u5408 flink sql\uff08\u622a\u6b62\u53d1\u6587\u9636\u6bb5\u6765\u8bf4\uff09\uff01\uff01\uff01<\/p>\n\n\n\n<p>\u5176\u5b9e\u8fd9\u4e9b\u76ee\u524d\u4e0d\u9002\u5408 flink sql \u7684\u573a\u666f\u603b\u7ed3\u4e0b\u6765\u5c31\u662f\u5728\u5904\u7406\u4e0a\u6bd4 datastream \u8fd8\u662f\u4f1a\u6709\u4e00\u5b9a\u7684\u635f\u5931\u3002<\/p>\n\n\n\n<p>\u5148\u603b\u7ed3\u4e0b\u4f7f\u7528\u573a\u666f\uff1a<\/p>\n\n\n\n<p><strong>1. dwd<\/strong>\uff1a\u7b80\u5355\u7684\u6e05\u6d17\u3001\u590d\u6742\u7684\u6e05\u6d17\u3001\u7ef4\u5ea6\u7684\u6269\u5145\u3001\u5404\u79cd udf \u7684\u4f7f\u7528<\/p>\n\n\n\n<p><strong>2. dws<\/strong>\uff1a\u5404\u7c7b\u805a\u5408<\/p>\n\n\n\n<p>\u7136\u540e\u5206\u9002\u5408\u7684\u573a\u666f\u548c\u4e0d\u9002\u5408\u7684\u573a\u666f\u6765\u8bf4\uff0c\u56e0\u4e3a\u53ea\u8fd9\u4e00\u7bc7\u4e0d\u80fd\u8986\u76d6\u6240\u6709\u7684\u5185\u5bb9\uff0c\u6240\u4ee5\u672c\u6587\u6b64\u5904\u5148\u5927\u81f4\u7ed9\u4e2a\u7ed3\u8bba\uff0c\u4e4b\u540e\u4f1a\u7ed3\u5408\u5177\u4f53\u7684\u573a\u666f\u8be6\u7ec6\u63cf\u8ff0\u3002<\/p>\n\n\n\n<ul>\n<li><strong>\u9002\u5408\u7684\u573a\u666f\uff1a<\/strong><\/li>\n<\/ul>\n\n\n\n<ol>\n<li>\u7b80\u5355\u7684 dwd \u6e05\u6d17\u573a\u666f<\/li>\n\n\n\n<li>\u5168\u573a\u666f\u7684 dws \u805a\u5408\u573a\u666f<\/li>\n<\/ol>\n\n\n\n<ul>\n<li><strong>\u76ee\u524d\u4e0d\u592a\u9002\u5408\u7684\u573a\u666f\uff1a<\/strong><\/li>\n<\/ul>\n\n\n\n<ol>\n<li>\u590d\u6742\u7684 dwd \u6e05\u6d17\u573a\u666f\uff1a\u4e3e\u4f8b\u6bd4\u5982\u4f7f\u7528\u4e86\u5f88\u591a udf \u6e05\u6d17\uff0c\u5c24\u5176\u662f\u4f7f\u7528\u5f88\u591a\u7684 json \u7c7b\u89e3\u6790\u6e05\u6d17<\/li>\n\n\n\n<li>\u5173\u8054\u7ef4\u5ea6\u573a\u666f\uff1a\u4e3e\u4f8b\u6bd4\u5982 datastream \u4e2d\u7ecf\u5e38\u4f1a\u6709\u6512\u4e00\u6279\u6570\u636e\u6279\u91cf\u8bbf\u95ee\u5916\u90e8\u63a5\u53e3\u7684\u573a\u666f\uff0cflink sql \u76ee\u524d\u5bf9\u4e8e\u8fd9\u79cd\u573a\u666f\u867d\u7136\u6709 localcache\u3001\u5f02\u6b65\u8bbf\u95ee\u80fd\u529b\uff0c\u4f46\u662f\u4f9d\u7136\u8fd8\u662f\u4e00\u6761\u4e00\u6761\u8bbf\u95ee\u5916\u90e8\u7f13\u5b58\uff0c\u8fd9\u6837\u76f8\u6bd4\u6279\u91cf\u8bbf\u95ee\u8fd8\u662f\u4f1a\u6709\u6027\u80fd\u5dee\u8ddd\u3002<\/li>\n<\/ol>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"3%E6%A6%82%E5%BF%B5%E7%AF%87-%E5%85%88%E8%81%8A%E8%81%8A%E5%B8%B8%E8%A7%81%E7%9A%84%E7%AA%97%E5%8F%A3%E8%81%9A%E5%90%88\"><\/span>3.\u6982\u5ff5\u7bc7-\u5148\u804a\u804a\u5e38\u89c1\u7684\u7a97\u53e3\u805a\u5408<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>\u7a97\u53e3\u805a\u5408\u5927\u5bb6\u90fd\u5728 datastream api \u4e2d\u5f88\u719f\u6089\u4e86\uff0c\u76ee\u524d\u5728\u5b9e\u65f6\u6570\u636e\u5904\u7406\u7684\u8fc7\u7a0b\u4e2d\uff0c\u7a97\u53e3\u8ba1\u7b97\u53ef\u4ee5\u8bf4\u662f\u6700\u91cd\u8981\u3001\u6700\u5e38\u7528\u7684\u4e00\u79cd\u8ba1\u7b97\u65b9\u5f0f\u4e86\u3002<\/p>\n\n\n\n<p>\u4f46\u662f\u5728\u629b\u51fa\u7a97\u53e3\u6982\u5ff5\u4e4b\u524d\uff0c\u535a\u4e3b\u6709\u51e0\u4e2a\u5173\u4e8e\u7a97\u53e3\u7684\u5c0f\u60f3\u6cd5\u8bf4\u4e00\u4e0b\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"31%E7%AA%97%E5%8F%A3%E7%AB%9F%E7%84%B6%E6%8B%96%E6%85%A2%E6%95%B0%E6%8D%AE%E4%BA%A7%E5%87%BA%EF%BC%9F\"><\/span>3.1.\u7a97\u53e3\u7adf\u7136\u62d6\u6162\u6570\u636e\u4ea7\u51fa\uff1f<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>\u4e00\u4e2a\u5c0f\u60f3\u6cd5\u3002<\/p>\n\n\n\n<p><strong>\u5148\u629b\u7ed3\u8bba\uff1a\u7a97\u53e3\u4f1a\u62d6\u6162\u5b9e\u65f6\u6570\u636e\u7684\u4ea7\u51fa\uff0c\u662f\u5728\u76ee\u524d\u4e0b\u6e38\u5206\u6790\u5f15\u64ce\u80fd\u529b\u6709\u9650\u7684\u60c5\u51b5\u4e0b\u7684\u4e00\u79cd\u59a5\u534f\u65b9\u6848\u3002<\/strong><\/p>\n\n\n\n<p>\u7ad9\u5728\u6570\u636e\u5f00\u53d1\u4ee5\u53ca\u9700\u6c42\u65b9\u7684\u4e16\u754c\u4e2d\uff0c\u5f53\u7136\u5e0c\u671b\u6240\u6709\u7684\u6570\u636e\u90fd\u662f<strong>\u5b9e\u65f6\u6765\u7684\uff0c\u5b9e\u65f6\u5904\u7406\u7684\uff0c\u5b9e\u65f6\u4ea7\u51fa\u7684\uff0c\u5b9e\u65f6\u5c55\u73b0\u7684<\/strong>\u3002<\/p>\n\n\n\n<p><strong>\u4e3e\u4e2a\u4f8b\u5b50<\/strong>\uff1a\u5982\u679c\u4f60\u8981\u6ee1\u8db3\u4e00\u4e2a\u4e00\u5206\u949f\u7a97\u53e3\u805a\u5408\u7684 pv\uff0cuv\uff0c\u6216\u8005\u5176\u4ed6\u805a\u5408\u9700\u6c42\u3002<\/p>\n\n\n\n<p><strong>olap \u6570\u636e\u670d\u52a1\u5f15\u64ce<\/strong>&nbsp;\u5c31\u53ef\u4ee5\u6ee1\u8db3\u4e0a\u8ff0\u7684<strong>\u5b9e\u65f6\u6765\u7684\uff0c\u5b9e\u65f6\u5904\u7406\u7684\uff0c\u5b9e\u65f6\u4ea7\u51fa\u7684\uff0c\u5b9e\u65f6\u5c55\u73b0\u7684<\/strong>\u7684\u573a\u666f\u3002flink \u6d88\u8d39\u5904\u7406\u660e\u7ec6\u6570\u636e\uff0c\u4ea7\u51fa\u5230 kafka\uff0c\u7136\u540e\u76f4\u63a5\u5bfc\u5165\u5230 olap \u5f15\u64ce\u4e2d\u3002\u67e5\u8be2\u65f6\u76f4\u63a5\u7528 olap \u505a\u805a\u5408\u3002\u8fd9\u5176\u4e2d\u662f\u6ca1\u6709\u4efb\u4f55\u7a97\u53e3\u7684\u6982\u5ff5\u7684\u3002\u4f46\u662f\u6574\u4e2a\u94fe\u8def\u4e2d\uff0c\u8981\u4fdd\u969c\u7aef\u5bf9\u7aef\u7cbe\u786e\u4e00\u6b21\uff0c\u8981\u4fdd\u969c\u5927\u6570\u636e\u91cf\u60c5\u51b5\u4e0b olap \u5f15\u64ce\u80fd\u591f\u79d2\u7ea7\u67e5\u8be2\u8fd4\u56de\uff0c\u66f4\u4f55\u51b5\u6709\u4e00\u4e9b\u53bb\u91cd\u7c7b\u6307\u6807\u7684\u8ba1\u7b97\uff0c\u7b49\u7b49\u573a\u666f\u3002\u628a\u8fd9\u4e9b\u538b\u529b\u90fd\u653e\u5728 olap \u5f15\u64ce\u7684\u538b\u529b\u662f\u5f88\u5927\u7684\u3002<\/p>\n\n\n\n<p>\u56e0\u6b64\u5728&nbsp;<strong>flink \u6570\u636e\u8ba1\u7b97\u5f15\u64ce<\/strong>\u4e2d\u5c31\u8bde\u751f\u4e86\u7a97\u53e3\u7684\u6982\u5ff5\u3002\u6211\u4eec\u53ef\u4ee5\u76f4\u63a5\u5728\u8ba1\u7b97\u5f15\u64ce\u4e2d\u8fdb\u884c\u7a97\u53e3\u805a\u5408\u8ba1\u7b97\uff0c\u7136\u540e\u7b49\u5230\u7a97\u53e3\u7ed3\u675f\u4e4b\u540e\u76f4\u63a5\u628a\u7ed3\u679c\u6570\u636e\u4ea7\u51fa\u3002\u8fd9\u5c31\u51fa\u73b0\u4e86\u535a\u4e3b\u6240\u8bf4\u7684\u7a97\u53e3\u62d6\u6162\u4e86\u5b9e\u65f6\u6570\u636e\u4ea7\u51fa\u7684\u60c5\u51b5\u3002\u800c\u4e14\u7a97\u53e3\u5728\u5904\u7406\u4e0d\u597d\u7684\u60c5\u51b5\u4e0b\u53ef\u80fd\u4f1a\u5bfc\u81f4\u6570\u636e\u4e22\u5931\u3002<\/p>\n\n\n\n<p>\u5173\u4e8e\u4e0a\u8ff0\u4e24\u79cd\u60c5\u51b5\u7684\u5177\u4f53\u4f18\u52a3\u9009\u62e9\uff0c\u90fd\u7531\u5927\u5bb6\u81ea\u884c\u9009\u62e9\u3002\u4e0a\u8ff0\u53ea\u662f\u5f15\u51fa\u535a\u4e3b\u4e00\u4e9b\u60f3\u6cd5\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"32%E5%B8%B8%E7%94%A8%E7%9A%84%E7%AA%97%E5%8F%A3\"><\/span>3.2.\u5e38\u7528\u7684\u7a97\u53e3<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>\u76ee\u524d\u5df2\u77e5\u7684\u7a97\u53e3\u5206\u4e3a\u4ee5\u4e0b\u56db\u79cd\u3002<\/p>\n\n\n\n<p><strong>1. Tumble Windows2. Hop Windows3. Cumulate Windows4. Session Windows<\/strong><\/p>\n\n\n\n<p>\u8fd9\u4e9b\u7a97\u53e3\u7684\u5177\u4f53\u63cf\u8ff0\u76f4\u63a5\u89c1\u5b98\u7f51\uff0c\u6709\u8be6\u7ec6\u7684\u8bf4\u660e\u3002\u6b64\u5904\u4e0d\u8d58\u8ff0\u3002<\/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-agg\/\n<\/div><\/figure>\n\n\n\n<p>\u6b64\u5904\u4ecb\u7ecd\u4e0b flink \u4e2d\u5e38\u5e38\u4f1a\u6d89\u53ca\u5230\u7684\u4e24\u4e2a\u5bb9\u6613\u6df7\u6dc6\u7684\u6982\u5ff5\u5c31\u662f\uff1a\u7a97\u53e3 + key\u3002\u8fd9\u91cc\u6765\u5f62\u8c61\u7684\u8bf4\u660e\u4e0b\u3002<\/p>\n\n\n\n<ul>\n<li><strong>\u7a97\u53e3\uff1a\u65f6\u95f4\u5468\u671f\u4e0a\u9762\u7684\u5212\u5206<\/strong>\u3002\u5c06\u65e0\u9650\u6d41\u8fdb\u884c\u7eb5\u5411\u5207\u5206\uff0c\u5c06\u65e0\u9650\u6d41\u5207\u5206\u4e3a\u4e00\u4e2a\u4e00\u4e2a\u7684\u7a97\u53e3\uff0c\u7a97\u53e3\u76f8\u5f53\u4e8e\u662f\u65e0\u9650\u6d41\u4e2d\u7684\u4e00\u6bb5\u65f6\u95f4\u5185\u7684\u6570\u636e\u3002<br><\/li>\n\n\n\n<li><strong>key\uff1a\u6570\u636e\u7c7b\u522b\u4e0a\u9762\u7684\u5212\u5206<\/strong>\u3002\u5c06\u65e0\u9650\u6d41\u8fdb\u884c\u6a2a\u5411\u5212\u5206\uff0c\u76f8\u540c key \u7684\u6570\u636e\u4f1a\u88ab\u5212\u5206\u5230\u4e00\u7ec4\u4e2d\uff0c\u8fd9\u4e2a key \u7684\u6570\u636e\u4e5f\u662f\u4e00\u6761\u65e0\u9650\u6d41\u3002<br><\/li>\n<\/ul>\n\n\n\n<p>\u5982\u4e0b\u56fe\u6240\u793a\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/pic1.zhimg.com\/80\/v2-d5b9c4d14ed69b13683a03fe3f1cf050_720w.webp\" alt=\"\"\/><\/figure>\n\n\n\n<p>1<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"4%E5%AE%9E%E6%88%98%E7%AF%87-%E7%AE%80%E5%8D%95%E7%9A%84_tumble_window_%E6%A1%88%E4%BE%8B%E5%92%8C%E8%BF%90%E8%A1%8C%E5%8E%9F%E7%90%86\"><\/span>4.\u5b9e\u6218\u7bc7-\u7b80\u5355\u7684 tumble window \u6848\u4f8b\u548c\u8fd0\u884c\u539f\u7406<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>\u6e90\u7801\u516c\u4f17\u53f7\u540e\u53f0\u56de\u590d<strong>flink sql tumble window \u7684\u5947\u5999\u89e3\u6790\u4e4b\u8def<\/strong>\u83b7\u53d6\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"41%E5%85%88%E7%9C%8B%E4%B8%80%E4%B8%AA_datastream_%E7%AA%97%E5%8F%A3%E6%A1%88%E4%BE%8B\"><\/span>4.1.\u5148\u770b\u4e00\u4e2a datastream \u7a97\u53e3\u6848\u4f8b<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>\u5728\u4ecb\u7ecd sql tumble window \u7a97\u53e3\u7b97\u5b50\u6267\u884c\u6848\u4f8b\u4e4b\u524d\uff0c\u5148\u770b\u4e00\u4e2a datastream \u4e2d\u7684\u7a97\u53e3\u7b97\u5b50\u6848\u4f8b\u3002\u5176\u903b\u8f91\u90fd\u662f\u76f8\u901a\u7684\u3002\u4f1a\u5bf9\u6211\u4eec\u4e86\u89e3 sql tumble window \u7b97\u5b50\u6709\u5e2e\u52a9\u3002<\/p>\n\n\n\n<p>\u6211\u4eec\u5148\u770b\u770b datastream \u5904\u7406\u903b\u8f91\u3002<\/p>\n\n\n\n<p>\u4ee5\u4e0b\u9762\u8fd9\u4e2a\u4e3a\u4f8b\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>public class _04_TumbleWindowTest {\n\n    public static void main(String&#91;] args) throws Exception {\n\n        StreamExecutionEnvironment env =\n                StreamExecutionEnvironment.createLocalEnvironmentWithWebUI(new Configuration());\n\n        env.setParallelism(1);\n\n        env.setStreamTimeCharacteristic(TimeCharacteristic.EventTime);\n\n        env.addSource(new UserDefinedSource())\n                .assignTimestampsAndWatermarks(new BoundedOutOfOrdernessTimestampExtractor&lt;Tuple4&lt;String, String, Integer, Long&gt;&gt;(Time.seconds(0)) {\n                    @Override\n                    public long extractTimestamp(Tuple4&lt;String, String, Integer, Long&gt; element) {\n                        return element.f3;\n                    }\n                })\n                .keyBy(new KeySelector&lt;Tuple4&lt;String, String, Integer, Long&gt;, String&gt;() {\n                    @Override\n                    public String getKey(Tuple4&lt;String, String, Integer, Long&gt; row) throws Exception {\n                        return row.f0;\n                    }\n                })\n                .window(TumblingEventTimeWindows.of(Time.seconds(10)))\n                .sum(2)\n                .print();\n\n        env.execute(\"1.12.1 DataStream TUMBLE WINDOW \u6848\u4f8b\");\n    }\n\n    private static class UserDefinedSource implements SourceFunction&lt;Tuple4&lt;String, String, Integer, Long&gt;&gt; {\n\n        private volatile boolean isCancel;\n\n        @Override\n        public void run(SourceContext&lt;Tuple4&lt;String, String, Integer, Long&gt;&gt; sourceContext) throws Exception {\n\n            while (!this.isCancel) {\n\n                sourceContext.collect(Tuple4.of(\"a\", \"b\", 1, System.currentTimeMillis()));\n\n                Thread.sleep(10L);\n            }\n\n        }\n\n        @Override\n        public void cancel() {\n            this.isCancel = true;\n        }\n    }\n}\n<\/code><\/pre>\n\n\n\n<p>datastream \u751f\u4ea7\u7684\u5177\u4f53\u7684 transformation \u5982\u4e0b\u56fe\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/pic2.zhimg.com\/80\/v2-cfafa990f7a703af4740032a52ee5fc5_720w.webp\" alt=\"\"\/><\/figure>\n\n\n\n<p>24<\/p>\n\n\n\n<p>\u5176\u4e2d\u6211\u4eec\u53ea\u5173\u6ce8\u6700\u91cd\u8981\u7684&nbsp;<code>WindowOperator<\/code>&nbsp;\u7b97\u5b50\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/pic2.zhimg.com\/80\/v2-c8d692ca0f84e7665e4066918000c2f9_720w.webp\" alt=\"\"\/><\/figure>\n\n\n\n<p>25<\/p>\n\n\n\n<p>\u5176\u4e2d&nbsp;<code>WindowOperator<\/code>&nbsp;\u7b97\u5b50\u5305\u542b\u7684\u91cd\u8981\u5c5e\u6027\u5982\u4e0b\u56fe\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/pic1.zhimg.com\/80\/v2-17e37ef7230286bda24e43c1bb715f34_720w.webp\" alt=\"\"\/><\/figure>\n\n\n\n<p>26<\/p>\n\n\n\n<p>\u6765\u770b\u770b&nbsp;<code>WindowOperator<\/code>&nbsp;\u7684\u6267\u884c\u903b\u8f91\u3002\u7a97\u53e3\u6267\u884c\u7684\u6574\u4f53\u8be6\u7ec6\u6d41\u7a0b\u53ef\u4ee5\u53c2\u8003\uff1a<a href=\"https:\/\/link.zhihu.com\/?target=http%3A\/\/wuchong.me\/blog\/2016\/05\/25\/flink-internals-window-mechanism\/\" target=\"_blank\" rel=\"noreferrer noopener\">http:\/\/wuchong.me\/blog\/2016\/05\/25\/flink-internals-window-mechanism\/<\/a><\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/pic1.zhimg.com\/80\/v2-ec38b502411ee19336cd0daac12965d0_720w.webp\" alt=\"\"\/><\/figure>\n\n\n\n<p>23<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"42flink_sql_tumble_window_%E7%9A%84%E8%AF%AD%E4%B9%89\"><\/span>4.2.flink sql tumble window \u7684\u8bed\u4e49<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>\u4ecb\u7ecd\u5230 tumble window \u7684\u8bed\u4e49\uff0c\u603b\u8981\u6709\u5bf9\u6bd4\u7684\u53bb\u4ecb\u7ecd\u3002\u8fd9\u91cc\u7684\u53c2\u7167\u7269\u5c31\u662f datastream api\u3002<\/p>\n\n\n\n<p>\u5728 datastream api \u4e2d\u3002tumble window \u4e00\u822c\u7528\u4f5c\u4ee5\u4e0b\u4e24\u79cd\u573a\u666f\u3002<\/p>\n\n\n\n<ol>\n<li><strong>\u4e1a\u52a1\u573a\u666f<\/strong>\uff1a\u4f7f\u7528 tumble window \u5f88\u8f7b\u677e\u7684\u8ba1\u7b97\u51fa\u7a97\u53e3\u5185\u7684\u805a\u5408\u6570\u636e\u3002\u4e00\u822c\u662f\u591a\u6761\u8f93\u5165\u6570\u636e\uff0c\u7a97\u53e3\u7ed3\u675f\u65f6\u4e00\u6761\u8f93\u51fa\u6570\u636e\u3002<\/li>\n\n\n\n<li><strong>\u4f18\u5316\u573a\u666f<\/strong>\uff1a\u7a97\u53e3\u805a\u5408\u4e00\u6279\u6570\u636e\u7136\u540e\u6279\u91cf\u8bbf\u95ee\u5916\u90e8\u5b58\u50a8\u6269\u5145\u7ef4\u5ea6\u3001\u6216\u8005\u6709\u4e00\u4e9b\u81ea\u5b9a\u4e49\u7684\u5904\u7406\u903b\u8f91\u3002\u4e00\u822c\u662f\u591a\u6761\u8f93\u5165\u6570\u636e\uff0c\u7a97\u53e3\u7ed3\u675f\u65f6\u591a\u6761\u8f93\u51fa\u6570\u636e\u3002<\/li>\n<\/ol>\n\n\n\n<p>\u4f46\u662f\u5728 sql api \u4e2d\u3002tumble window \u662f\u805a\u5408\uff08group by\uff09\u8bed\u4e49\uff0c\u805a\u5408\u5728 sql \u6807\u51c6\u4e2d\u7684\u6570\u636e\u5904\u7406\u903b\u8f91\u662f\u591a\u6761\u8f93\u5165\uff0c\u5728\u7a97\u53e3\u89e6\u53d1\u65f6\u5c31\u8f93\u51fa\u4e00\u6761\u6570\u636e\u7684\u8bed\u4e49\u3002\u800c\u4e0a\u9762\u7684\u5e38\u5e38\u7528\u5728 datastream \u4e2d\u7684<strong>\u4f18\u5316\u573a\u666f<\/strong>\u662f\u591a\u5bf9\u591a\u7684\u573a\u666f\u3002\u56e0\u6b64\u548c sql \u8bed\u4e49\u4e0d\u7b26\u5408\u3002\u6240\u4ee5 flink sql tumble window \u4e00\u822c\u90fd\u662f\u7528\u4e8e\u8ba1\u7b97\u805a\u5408\u8fd0\u7b97\u503c\u6765\u4f7f\u7528\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"43tumble_window_%E5%AE%9E%E9%99%85%E6%A1%88%E4%BE%8B\"><\/span>4.3.tumble window \u5b9e\u9645\u6848\u4f8b<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>\u6eda\u52a8\u7a97\u53e3\u7684\u7279\u6027\u5c31\u662f\u4f1a\u5c06\u65e0\u9650\u6d41\u8fdb\u884c\u7eb5\u5411\u5212\u5206\u6210\u4e00\u4e2a\u4e00\u4e2a\u7684\u7a97\u53e3\uff0c\u6bcf\u4e2a\u7a97\u53e3\u90fd\u662f\u76f8\u540c\u7684\u5927\u5c0f\uff0c\u5e76\u4e14\u4e0d\u91cd\u53e0\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/pic3.zhimg.com\/80\/v2-fac4d388de740e4a05606d8b7075ba26_720w.webp\" alt=\"\"\/><\/figure>\n\n\n\n<p>22<\/p>\n\n\n\n<p>\u672c\u6587\u4e3b\u8981\u4ecb\u7ecd flink 1.12 \u53ca\u4e4b\u524d\u7248\u672c\u7684\u5b9e\u73b0\u3002\u4e0b\u4e00\u7bc7\u6587\u7ae0\u4ecb\u7ecd flink 1.13 \u7684\u5b9e\u73b0\u3002<\/p>\n\n\n\n<p>\u6765\uff0c\u5728\u4ecb\u7ecd\u539f\u7406\u4e4b\u524d\uff0c\u603b\u8981\u5148\u7528\u8d77\u6765\uff0c\u6211\u4eec\u5c31\u4ee5\u4e0b\u9762\u8fd9\u4e2a\u4f8b\u5b50\u5c55\u5f00\u3002<\/p>\n\n\n\n<p><strong>1.\uff08flink 1.12.1\uff09\u573a\u666f\uff1a\u7b80\u5355\u4e14\u5e38\u89c1\u7684\u5206\u7ef4\u5ea6\u5206\u949f\u7ea7\u522b\u540c\u65f6\u5728\u7ebf\u7528\u6237\u6570\u3001\u603b\u9500\u552e\u989d<\/strong><\/p>\n\n\n\n<p>\u6570\u636e\u6e90\u8868\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>CREATE TABLE source_table (\n    -- \u7ef4\u5ea6\u6570\u636e\n    dim STRING,\n    -- \u7528\u6237 id\n    user_id BIGINT,\n    -- \u7528\u6237\n    price BIGINT,\n    -- \u4e8b\u4ef6\u65f6\u95f4\u6233\n    row_time AS cast(CURRENT_TIMESTAMP as timestamp(3)),\n    -- watermark \u8bbe\u7f6e\n    WATERMARK FOR row_time AS row_time - INTERVAL '5' SECOND\n) WITH (\n  'connector' = 'datagen',\n  'rows-per-second' = '10',\n  'fields.dim.length' = '1',\n  'fields.user_id.min' = '1',\n  'fields.user_id.max' = '100000',\n  'fields.price.min' = '1',\n  'fields.price.max' = '100000'\n)\n<\/code><\/pre>\n\n\n\n<blockquote class=\"wp-block-quote\">\n<p><strong>Notes &#8211; \u5173\u4e8e watermark \u5bb9\u6613\u8e29\u5f97\u5751\uff1a<\/strong>sql \u7684 watermark \u7c7b\u578b\u5fc5\u987b\u8981\u8bbe\u7f6e\u4e3a&nbsp;<code>TIMESTAMP(3)<\/code>\u3002<\/p>\n<\/blockquote>\n\n\n\n<p>\u6570\u636e\u6c47\u8868\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>CREATE TABLE sink_table (\n    dim STRING,\n    pv BIGINT,\n    sum_price BIGINT,\n    max_price BIGINT,\n    min_price BIGINT,\n    uv BIGINT,\n    window_start bigint\n) WITH (\n  'connector' = 'print'\n)\n<\/code><\/pre>\n\n\n\n<p>\u6570\u636e\u5904\u7406\u903b\u8f91\uff1a<\/p>\n\n\n\n<p>\u53ef\u4ee5\u770b\u4e0b\u4e0b\u9762\u8bed\u6cd5\uff0c\u7a97\u53e3\u805a\u5408\u7684\u5199\u6cd5\u6709\u4e13\u95e8\u7684&nbsp;<code>tumble(row_time, interval '1' minute)<\/code>&nbsp;\u5199\u6cd5\uff0c\u8fd9\u5c31\u662f\u4e0e\u5e73\u5e38\u6211\u4eec\u5199\u7684 hive sql\uff0cmysql \u7b49\u4e0d\u4e00\u6837\u7684\u5730\u65b9\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>insert into sink_table\nselect dim,\n       sum(bucket_pv) as pv,\n       sum(bucket_sum_price) as sum_price,\n       max(bucket_max_price) as max_price,\n       min(bucket_min_price) as min_price,\n       sum(bucket_uv) as uv,\n       max(window_start) as window_start\nfrom (\n     select dim,\n            count(*) as bucket_pv,\n            sum(price) as bucket_sum_price,\n            max(price) as bucket_max_price,\n            min(price) as bucket_min_price,\n            -- \u8ba1\u7b97 uv \u6570\n            count(distinct user_id) as bucket_uv,\n            cast(tumble_start(row_time, interval '1' minute) as bigint) * 1000 as window_start\n     from source_table\n     group by\n            -- \u6309\u7167\u7528\u6237 id \u8fdb\u884c\u5206\u6876\uff0c\u9632\u6b62\u6570\u636e\u503e\u659c\n            mod(user_id, 1024),\n            dim,\n            tumble(row_time, interval '1' minute)\n)\ngroup by dim,\n         window_start\n<\/code><\/pre>\n\n\n\n<p><strong>2.\u8fd0\u884c\uff1a\u53ef\u4ee5\u770b\u5230\uff0c\u5176\u5b9e\u5728 flink sql \u4efb\u52a1\u4e2d\uff0c\u5176\u4f1a\u628a\u5bf9\u5e94\u7684\u5904\u7406\u903b\u8f91\u7ed9\u5199\u5230\u7b97\u5b50\u540d\u79f0\u4e0a\u9762\u3002<\/strong><\/p>\n\n\n\n<blockquote class=\"wp-block-quote\">\n<p><strong>Notes &#8211; \u89c2\u5bdf flink sql \u6280\u5de7 1\uff1a<\/strong>\u8fd9\u4e2a\u5176\u5b9e\u5c31\u662f\u6211\u4eec\u89c2\u5bdf flink sql \u4efb\u52a1\u7684\u7b2c\u4e00\u4e2a\u6280\u5de7\u3002\u5982\u679c\u4f60\u60f3\u77e5\u9053\u4f60\u7684 flink \u4efb\u52a1\u5728\u5e72\u5565\uff0c\u7b2c\u4e00\u53cd\u5e94\u662f\u53bb flink webui \u770b\u770b\u8fd9\u4e2a\u4efb\u52a1\u76ee\u524d\u5728\u505a\u4ec0\u4e48\u3002\u5305\u62ec\u7b97\u5b50\u540d\u79f0\u90fd\u4f1a\u7ed9\u76f4\u63a5\u5c55\u793a\u7ed9\u6211\u4eec\u76ee\u524d\u54ea\u4e2a\u7b97\u5b50\u5728\u5e72\u5565\u4e8b\u60c5\uff0c\u5728\u5904\u7406\u5565\u903b\u8f91<\/p>\n<\/blockquote>\n\n\n\n<p><strong>\u5148\u770b\u4e00\u4e0b\u6574\u4e2a\u7b97\u5b50\u56fe\uff0c\u5982\u4e0b\u56fe\u3002\u4ece\u5de6\u5230\u53f3\u603b\u5171\u5206\u4e3a\u4e09\u4e2a\u7b97\u5b50\u3002<\/strong><\/p>\n\n\n\n<ol>\n<li>\u7b2c\u4e00\u4e2a\u7b97\u5b50\u5c31\u662f\u6570\u636e\u6e90\u7b97\u5b50<\/li>\n\n\n\n<li>\u7b2c\u4e8c\u4e2a\u7b97\u5b50\u5c31\u662f\u5206\u4e86\u6876\u7684\u7a97\u53e3\u805a\u5408\u7b97\u5b50\uff0c\u7b2c\u4e00\u4e2a\u7b97\u5b50\u548c\u7b2c\u4e8c\u4e2a\u7b97\u5b50\u4e4b\u95f4 hash \u4f20\u8f93\u5c31\u662f\u6309\u7167 group key \u8fdb\u884c hash \u4f20\u8f93<\/li>\n\n\n\n<li>\u7b2c\u4e09\u4e2a\u7b97\u5b50\u5c31\u662f\u5916\u5c42\u8fdb\u884c\u5408\u6876\u8ba1\u7b97\u7684\u7b97\u5b50\uff0c\u540c\u6837\u4e5f\u662f hash \u4f20\u8f93\uff0c\u5c06\u5206\u6876\u7684\u6570\u636e\u5728\u4e00\u4e2a\u7b97\u5b50\u4e2d\u8fdb\u884c\u5408\u5e76\u8ba1\u7b97<\/li>\n<\/ol>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/pic4.zhimg.com\/80\/v2-ba84ad1ce88c28a40659a3ccc5ccefc7_720w.webp\" alt=\"\"\/><\/figure>\n\n\n\n<p>5<\/p>\n\n\n\n<p>\u6765\u770b\u770b\u6bcf\u4e00\u4e2a\u7b97\u5b50\u5177\u4f53\u505a\u4e86\u4ec0\u4e48\u4e8b\u60c5\u3002<\/p>\n\n\n\n<p><strong>\u7b2c\u4e00\u4e2a\u7b97\u5b50\uff1a<\/strong><\/p>\n\n\n\n<ol>\n<li>table scan \u8bfb\u53d6\u6570\u636e\u6e90<\/li>\n\n\n\n<li>\u4ece\u6570\u636e\u6e90\u4e2d\u83b7\u53d6\u5bf9\u5e94\u7684\u5b57\u6bb5\uff08\u5305\u62ec\u6e90\u8868\u5b9a\u4e49\u7684 rowtime\uff09<\/li>\n\n\n\n<li>\u5206\u914d watermark\uff08\u6309\u7167\u6e90\u8868\u5b9a\u4e49\u7684 watermark \u5206\u914d\u5bf9\u5e94\u7684 watermark\uff09<\/li>\n\n\n\n<li>\u5c06\u4e00\u4e9b\u5fc5\u8981\u7684\u5b57\u6bb5\u62bd\u53d6\u3002\u6bd4\u5982 group by \u4e2d\u7684\u5b57\u6bb5\u3002\u5728 hash \u65f6\u9700\u8981\u4f7f\u7528\u3002<\/li>\n<\/ol>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/pic4.zhimg.com\/80\/v2-167db02ed261d0ecb329cc4e09ecebe7_720w.webp\" alt=\"\"\/><\/figure>\n\n\n\n<p>6<\/p>\n\n\n\n<p><strong>\u7b2c\u4e8c\u4e2a\u7b97\u5b50\uff1a<\/strong><\/p>\n\n\n\n<ol>\n<li>\u7a97\u53e3\u805a\u5408\uff0c\u8ba1\u7b97\u7a97\u53e3\u805a\u5408\u6570\u636e<\/li>\n\n\n\n<li>\u5c06\u6570\u636e\u6309\u7167\u7b2c\u4e00\u5c42 select \u4e2d\u7684\u6570\u636e\u8fdb\u884c\u8ba1\u7b97\u4ee5\u53ca\u683c\u5f0f\u5316<\/li>\n<\/ol>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/pic4.zhimg.com\/80\/v2-51c8262e3026f93464340e8db3089fd3_720w.webp\" alt=\"\"\/><\/figure>\n\n\n\n<p>7<\/p>\n\n\n\n<p><strong>\u7b2c\u4e09\u4e2a\u7b97\u5b50\uff1a<\/strong><\/p>\n\n\n\n<ol>\n<li>group \u805a\u5408\u5408\u6876\u8ba1\u7b97<\/li>\n\n\n\n<li>\u5c06\u6570\u636e\u6309\u7167\u7b2c\u4e8c\u5c42 select \u4e2d\u7684\u6570\u636e\u8fdb\u884c\u8ba1\u7b97\u4ee5\u53ca\u683c\u5f0f\u5316<\/li>\n\n\n\n<li>\u5c06\u6570\u636e sink \u5199\u51fa<\/li>\n<\/ol>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/pic4.zhimg.com\/80\/v2-94ab572beae05e90d05bff911b5bc44f_720w.webp\" alt=\"\"\/><\/figure>\n\n\n\n<p>8<\/p>\n\n\n\n<p><strong>3.\uff08flink 1.12.1\uff09\u7ed3\u679c\uff1a<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>+I(9,1,32682,32682,32682,1,1631026440000)\n-U(9,1,32682,32682,32682,1,1631026440000)\n+U(9,2,115351,82669,32682,2,1631026440000)\n+I(2,1,76148,76148,76148,1,1631026440000)\n+I(8,1,79321,79321,79321,1,1631026440000)\n+I(a,1,85792,85792,85792,1,1631026440000)\n+I(0,1,12858,12858,12858,1,1631026440000)\n+I(5,1,36753,36753,36753,1,1631026440000)\n+I(3,1,19218,19218,19218,1,1631026440000)\n...\n<\/code><\/pre>\n\n\n\n<p><strong>4.\uff08flink 1.12.1\uff09\u539f\u7406\uff1a<\/strong><\/p>\n\n\n\n<p>\u5173\u4e8e sql \u5f00\u59cb\u8fd0\u884c\u7684\u673a\u5236\u89c1\u4e0a\u4e00\u8282\u8be6\u8ff0\u3002<\/p>\n\n\n\n<p>\u6b64\u5904\u53ea\u4ecb\u7ecd\u76f8\u6bd4\u524d\u4e00\u8282\u65b0\u589e\u5185\u5bb9\u3002\u53ef\u4ee5\u770b\u5230\u4e0a\u8ff0\u4ee3\u7801\u7684\u5177\u4f53 transformation \u5982\u4e0b\u56fe\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/pic3.zhimg.com\/80\/v2-8f86549a4d1840e3d5400f5a5849bb4a_720w.webp\" alt=\"\"\/><\/figure>\n\n\n\n<p>9<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"44GeneratedWatermarkGenerator_%E2%80%93_flink_1121\"><\/span>4.4.GeneratedWatermarkGenerator &#8211; flink 1.12.1<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>\u6309\u7167\u987a\u5e8f\uff0c\u9996\u5148\u770b\u770b watermark \u7b97\u5b50\u3002\u540c datastream \u7684\u81ea\u5b9a\u4e49 watermark \u5206\u914d\u7b56\u7565\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/pic1.zhimg.com\/80\/v2-84791592ab70296819f287f09761bd74_720w.webp\" alt=\"\"\/><\/figure>\n\n\n\n<p>10<\/p>\n\n\n\n<p>watermark \u751f\u6210\u7684\u5177\u4f53\u4ee3\u7801&nbsp;<code>WatermarkGenerator$6<\/code>\uff0c\u4e3b\u8981\u83b7\u53d6 watermark \u7684\u903b\u8f91\u5728&nbsp;<code>currentWatermark<\/code>&nbsp;\u65b9\u6cd5\u4e2d\u3002\u5982\u4e0b\u56fe\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/pic1.zhimg.com\/80\/v2-e1b6dc8d8e5aab3c770f698b559f91b8_720w.webp\" alt=\"\"\/><\/figure>\n\n\n\n<p>11<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"45BinaryRowDataKeySelector_%E2%80%93_flink_1121\"><\/span>4.5.BinaryRowDataKeySelector &#8211; flink 1.12.1<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>\u63a5\u7740\u5c31\u662f group by\uff08\u540c datastream \u4e2d\u7684 keyby\uff09\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/pic3.zhimg.com\/80\/v2-a8beabbe2c53943b195dc1b910e81be6_720w.webp\" alt=\"\"\/><\/figure>\n\n\n\n<p>12<\/p>\n\n\n\n<p>group by key \u751f\u6210\u7684\u5177\u4f53\u4ee3\u7801&nbsp;<code>KeyProjection$19<\/code>\uff0c\u4e3b\u8981\u903b\u8f91\u5728&nbsp;<code>apply<\/code>&nbsp;\u65b9\u6cd5\u4e2d\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/pic4.zhimg.com\/80\/v2-44ed064606a9c029eacbbc19578b348f_720w.webp\" alt=\"\"\/><\/figure>\n\n\n\n<p>13<\/p>\n\n\n\n<p>\u4e0b\u4e00\u4e2a\u5c31\u662f\u7a97\u53e3\u805a\u5408\u7b97\u5b50\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"46AggregateWindowOperator_%E2%80%93_flink_1121\"><\/span>4.6.AggregateWindowOperator &#8211; flink 1.12.1<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>\u5144\u5f1f\u4eec\uff01\uff01\uff01\u5144\u5f1f\u4eec\uff01\uff01\uff01\u5144\u5f1f\u4eec\uff01\uff01\uff01<\/p>\n\n\n\n<p>\u672c\u8282\u7684\u91cd\u5934\u620f\u6765\u4e86\u3002sql \u7a97\u53e3\u805a\u5408\u7b97\u5b50\u89e3\u6790\u641e\u8d77\u6765\u4e86\u3002<\/p>\n\n\n\n<p>\u5173\u4e8e&nbsp;<code>WatermarkGenerator<\/code>&nbsp;\u548c&nbsp;<code>KeyProjection<\/code>&nbsp;\u6ca1\u6709\u4ec0\u4e48\u53ef\u4ee5\u8be6\u7ec6\u4ecb\u7ecd\u7684\uff0c\u90fd\u662f\u8f93\u5165\u4e00\u6761\u6570\u636e\uff0c\u8f93\u51fa\u4e00\u6761\u6570\u636e\uff0c\u903b\u8f91\u5f88\u7b80\u5355\u3002<\/p>\n\n\n\n<p>\u4f46\u662f\u7a97\u53e3\u805a\u5408\u7b97\u5b50\u7684\u8ba1\u7b97\u903b\u8f91\u76f8\u6bd4\u4e0a\u9762\u4e24\u4e2a\u7b97\u5b50\u590d\u6742\u5f88\u591a\u3002\u7a97\u53e3\u7b97\u5b50\u53c8\u627f\u8f7d\u4e86\u7a97\u53e3\u805a\u5408\u7684\u4e3b\u8981\u903b\u8f91\uff0c\u6240\u4ee5\u672c\u6587\u91cd\u70b9\u4ecb\u7ecd\u7a97\u53e3\u7b97\u5b50\u8ba1\u7b97\u7684\u903b\u8f91\u3002<\/p>\n\n\n\n<p>\u5148\u6765\u770b\u770b sql \u7a97\u53e3\u6574\u4f53\u5904\u7406\u6d41\u7a0b\u3002\u5176\u5b9e\u4e0e datastream \u5904\u7406\u6d41\u7a0b\u57fa\u672c\u4e00\u81f4\uff0c\u4f46\u53ea\u662f\u5c11\u4e86&nbsp;<code>Evictor<\/code>\u3002\u5982\u4e0b\u56fe\u6240\u793a\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/pic2.zhimg.com\/80\/v2-1900b18a657aa8049c1460567e598c35_720w.webp\" alt=\"\"\/><\/figure>\n\n\n\n<p>40<\/p>\n\n\n\n<p>\u63a5\u7740\u6765\u770b\u770b\u4e0a\u8ff0 sql \u751f\u6210\u7684\u7a97\u53e3\u805a\u5408\u7b97\u5b50&nbsp;<code>AggregateWindowOperator<\/code>\uff0c\u622a\u56fe\u4e2d\u5c5e\u6027\u4e5f\u5f88\u6e05\u6670\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/pic1.zhimg.com\/80\/v2-f6827c991c14f37862c200e2ecb5e184_720w.webp\" alt=\"\"\/><\/figure>\n\n\n\n<p>16<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/pic3.zhimg.com\/80\/v2-7870c8c0cefc339a50f07e728e61d03a_720w.webp\" alt=\"\"\/><\/figure>\n\n\n\n<p>14<\/p>\n\n\n\n<p>\u5177\u4f53\u751f\u6210\u7684\u7a97\u53e3\u805a\u5408\u4ee3\u7801&nbsp;<code>GroupingWindowAggsHandler$59<\/code>\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/pic2.zhimg.com\/80\/v2-96e8537798eed321c3283f571d2ad20d_720w.webp\" alt=\"\"\/><\/figure>\n\n\n\n<p>41<\/p>\n\n\n\n<p>\u8ba1\u7b97\u903b\u8f91&nbsp;<code>GroupingWindowAggsHandler$59#accumulate<\/code>\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/pic4.zhimg.com\/80\/v2-9278585ce3cbad59b2ddddea827074eb_720w.webp\" alt=\"\"\/><\/figure>\n\n\n\n<p>42<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/pic1.zhimg.com\/80\/v2-9ec6c31f7b43cc23610110a33f9ba454_720w.webp\" alt=\"\"\/><\/figure>\n\n\n\n<p>43<\/p>\n\n\n\n<p><strong>\u4e0a\u9762\u90a3\u6bb5\u90fd\u662f\u5728 flink \u5ba2\u6237\u7aef\u521d\u59cb\u5316\u5904\u7406\u7684\u3002\u5305\u62ec\u7a97\u53e3\u7b97\u5b50\u7684\u521d\u59cb\u5316\u7b49\u3002<\/strong><\/p>\n\n\n\n<p><strong>\u4e0b\u9762\u8fd9\u6bb5\u5904\u7406\u903b\u8f91\u662f\u5728 flink TM \u8fd0\u884c\u65f6\u5f00\u59cb\u6267\u884c\u7684\uff0c\u5305\u62ec\u7a97\u53e3\u7b97\u5b50\u8d44\u6e90\u7684\u521d\u59cb\u5316\u4ee5\u53ca\u8fd0\u884c\u903b\u8f91\u3002\u5c31\u5230\u4e86\u6b63\u5f0f\u7684\u6570\u636e\u5904\u7406\u73af\u8282\u4e86\u3002<\/strong><\/p>\n\n\n\n<p>\u7a97\u53e3\u7b97\u5b50 Task \u8fd0\u884c\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/pic4.zhimg.com\/80\/v2-6bbc333eae49842f7fdacad3da43855f_720w.webp\" alt=\"\"\/><\/figure>\n\n\n\n<p>27<\/p>\n\n\n\n<p>\u7a97\u53e3\u7b97\u5b50 Task \u521d\u59cb\u5316\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/pic2.zhimg.com\/80\/v2-4a6d1679d5113602fe5ca0d77db2563d_720w.webp\" alt=\"\"\/><\/figure>\n\n\n\n<p>28<\/p>\n\n\n\n<p>StreamTask \u6574\u4f53\u7684\u5904\u7406\u6d41\u7a0b\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/pic2.zhimg.com\/80\/v2-a3d0f9cabf4c8b0b57c108732fc39f8d_720w.webp\" alt=\"\"\/><\/figure>\n\n\n\n<p>29<\/p>\n\n\n\n<p>\u7a97\u53e3\u7b97\u5b50 open \u521d\u59cb\u5316\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/pic2.zhimg.com\/80\/v2-0adb225cdf2e0c3825caf71162089871_720w.webp\" alt=\"\"\/><\/figure>\n\n\n\n<p>30<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/pic4.zhimg.com\/80\/v2-c3fd481bf703986c271194d7501a6b1f_720w.webp\" alt=\"\"\/><\/figure>\n\n\n\n<p>31<\/p>\n\n\n\n<p>\u7a97\u53e3\u7b97\u5b50 open \u521d\u59cb\u5316\u540e\u7684\u7ed3\u679c\u3002\u5982\u4e0b\u56fe\uff0c\u5bf9\u5e94\u7684\u5177\u4f53\u7ec4\u4ef6\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/pic1.zhimg.com\/80\/v2-03881b1adc9e086b975ea3423ae28eb8_720w.webp\" alt=\"\"\/><\/figure>\n\n\n\n<p>32<\/p>\n\n\n\n<p>\u521d\u59cb\u5316\u5b8c\u6210\u4e4b\u540e\uff0c\u5f00\u59cb\u5904\u7406\u5177\u4f53\u6570\u636e\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/pic3.zhimg.com\/80\/v2-4a30f0e74a4e5cd078a1048b82f85ec6_720w.webp\" alt=\"\"\/><\/figure>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/pic2.zhimg.com\/80\/v2-b450c1f4b3dba22849613cb5aa29b265_720w.webp\" alt=\"\"\/><\/figure>\n\n\n\n<p>\u5faa\u73af loop\uff0c\u4e00\u76f4 run \u554a run\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/pic2.zhimg.com\/80\/v2-6091aa01efed91747462a412a413f4d1_720w.webp\" alt=\"\"\/><\/figure>\n\n\n\n<p>35<\/p>\n\n\n\n<p>\u5224\u65ad\u8bb0\u5f55\u7684\u5177\u4f53\u7c7b\u578b\uff0c\u7136\u540e\u6267\u884c\u4e0d\u540c\u7684\u903b\u8f91\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/pic3.zhimg.com\/80\/v2-5f7f268ccd2d93e530538570b565d762_720w.webp\" alt=\"\"\/><\/figure>\n\n\n\n<p>36<\/p>\n\n\n\n<p>\u6765\u770b\u770b\u5904\u7406\u4e00\u6761\u6570\u636e\u7684&nbsp;<code>processElement<\/code>&nbsp;\u65b9\u6cd5\u903b\u8f91\uff0c\u8fdb\u884c acc \u5904\u7406\u3002\u4ee3\u7801\u4e2d\u7684\u7684&nbsp;<code>windowAggregator<\/code>&nbsp;\u5c31\u662f\u4e4b\u524d\u4ee3\u7801\u751f\u6210\u7684&nbsp;<code>GroupingWindowAggsHandler$59<\/code>\u3002<\/p>\n\n\n\n<blockquote class=\"wp-block-quote\">\n<p><strong>Notes\uff1a<\/strong>\u4e8b\u4ef6\u65f6\u95f4\u903b\u8f91\u4e2d\uff0csql api \u548c datastream api \u5bf9\u4e8e\u6570\u636e\u8bb0\u5f55\u65f6\u95f4\u6233\u5b58\u50a8\u903b\u8f91\u662f\u4e0d\u4e00\u6837\u7684\u3002datastream api\uff1a\u6bcf\u6761\u8bb0\u5f55\u7684 rowtime \u662f\u653e\u5728&nbsp;<code>StreamRecord<\/code>&nbsp;\u4e2d\u7684\u65f6\u95f4\u6233\u5b57\u6bb5\u4e2d\u7684\u3002sql api\uff1a\u65f6\u95f4\u6233\u662f\u6bcf\u6b21\u90fd\u4ece\u6570\u636e\u4e2d\u8fdb\u884c\u83b7\u53d6\u7684\u3002\u7b97\u5b50\u4e2d\u4f1a\u7ef4\u62a4\u4e00\u4e2a\u4e0b\u6807\u3002\u53ef\u4ee5\u6309\u7167\u4e0b\u6807\u4ece\u6570\u636e\u4e2d\u83b7\u53d6\u65f6\u95f4\u6233\u3002<\/p>\n<\/blockquote>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/pic1.zhimg.com\/80\/v2-d567f2c67d829de2c5e35dd14ec7cc4c_720w.webp\" alt=\"\"\/><\/figure>\n\n\n\n<p>39<\/p>\n\n\n\n<p>\u6765\u770b\u770b watermark \u5230\u8fbe\u5e76\u4e14\u89e6\u53d1\u7a97\u53e3\u8ba1\u7b97\u65f6\uff0c\u6267\u884c&nbsp;<code>onEventTime<\/code>&nbsp;\u903b\u8f91\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/pic1.zhimg.com\/80\/v2-a7613f89e7bb36be8d6d73de270b6d48_720w.webp\" alt=\"\"\/><\/figure>\n\n\n\n<p>38<\/p>\n\n\n\n<p>\u89e6\u53d1\u7a97\u53e3\u8ba1\u7b97\u65f6\uff0c<code>onEventTime -&gt; emitWindowResult<\/code>\uff0c\u4ea7\u51fa\u5177\u4f53\u6570\u636e\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/pic1.zhimg.com\/80\/v2-dfa1f823729c8969cbdfe7e69e94814c_720w.webp\" alt=\"\"\/><\/figure>\n\n\n\n<p>17<\/p>\n\n\n\n<p>\u81f3\u6b64\u6574\u4e2a sql tumble window \u7684\u5904\u7406\u903b\u8f91\u4e5f\u5c31\u5f88\u6e05\u695a\u4e86\u3002\u548c datastream \u57fa\u672c\u4e0a\u90fd\u662f\u4e00\u81f4\u7684\u3002\u662f\u4e0d\u662f\u6574\u4e2a\u903b\u8f91\u5c31\u7406\u6e05\u695a\u4e86\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"5%E6%80%BB%E7%BB%93%E4%B8%8E%E5%B1%95%E6%9C%9B%E7%AF%87\"><\/span>5.\u603b\u7ed3\u4e0e\u5c55\u671b\u7bc7<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>\u6e90\u7801\u516c\u4f17\u53f7\u540e\u53f0\u56de\u590d<strong>flink sql tumble 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 tumble window \u805a\u5408\u7c7b\u6307\u6807\u7684\u5e38\u89c1\u573a\u666f\u6848\u4f8b\u4ee5\u53ca\u5176\u5e95\u5c42\u8fd0\u884c\u539f\u7406\u3002<\/p>\n\n\n\n<p>\u800c\u4e14\u4e5f\u4ecb\u7ecd\u4e86\u5728\u67e5\u770b flink sql \u4efb\u52a1\u65f6\u7684\u4e00\u4e9b\u6280\u5de7\uff1a<\/p>\n\n\n\n<ol>\n<li>\u53bb flink webui \u5c31\u80fd\u770b\u5230\u8fd9\u4e2a\u4efb\u52a1\u76ee\u524d\u5728\u505a\u4ec0\u4e48\u3002\u5305\u62ec\u7b97\u5b50\u540d\u79f0\u90fd\u4f1a\u7ed9\u76f4\u63a5\u5c55\u793a\u7ed9\u6211\u4eec\u76ee\u524d\u54ea\u4e2a\u7b97\u5b50\u5728\u5e72\u5565\u4e8b\u60c5\uff0c\u5728\u5904\u7406\u5565\u903b\u8f91\u3002<\/li>\n\n\n\n<li>sql \u7684 watermark \u7c7b\u578b\u8981\u8bbe\u7f6e\u4e3a TIMESTAMP(3)\u3002<\/li>\n\n\n\n<li>\u4e8b\u4ef6\u65f6\u95f4\u903b\u8f91\u4e2d\uff0csql api \u548c datastream api \u5bf9\u4e8e\u6570\u636e\u8bb0\u5f55\u65f6\u95f4\u6233\u5b58\u50a8\u903b\u8f91\u662f\u4e0d\u4e00\u6837\u7684\u3002datastream api\uff1a\u6bcf\u6761\u8bb0\u5f55\u7684 rowtime \u662f\u653e\u5728 StreamRecord \u4e2d\u7684\u65f6\u95f4\u6233\u5b57\u6bb5\u4e2d\u7684\u3002sql api\uff1a\u65f6\u95f4\u6233\u662f\u6bcf\u6b21\u90fd\u4ece\u6570\u636e\u4e2d\u8fdb\u884c\u83b7\u53d6\u7684\u3002\u7b97\u5b50\u4e2d\u4f1a\u7ef4\u62a4\u4e00\u4e2a\u4e0b\u6807\u3002\u53ef\u4ee5\u6309\u7167\u4e0b\u6807\u4ece\u6570\u636e\u4e2d\u83b7\u53d6\u65f6\u95f4\u6233\u3002<\/li>\n<\/ol>\n\n\n\n<p>\u540e\u7eed\u6587\u7ae0\u4f1a\u57fa\u4e8e\u4e00\u4e9b\u6700\u5e38\u89c1\u7684\u6848\u4f8b\u4ee5\u53ca\u539f\u7406\u5c42\u9762\u4ecb\u7ecd 1.13 \u7248\u672c\u7684 flink sql tumble window\uff08\u57fa\u4e8e\u6700\u65b0\u7684 window tvf\uff09\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>1.\u5e8f\u7bc7-\u672c\u6587\u7ed3\u6784 \u6e90\u7801\u516c\u4f17\u53f7\u540e\u53f0\u56de\u590dflink sql tumble window \u7684\u5947\u5999\u89e3\u6790\u4e4b\u8def&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%b58\/\" class=\"more-link read-more\" rel=\"bookmark\">\u7ee7\u7eed\u9605\u8bfb <span class=\"screen-reader-text\">\u3010\u8fd0\u7ef4\u5de5\u5177\u3011Flink SQL \u5b9e\u8df58 flink sql tumble window \u7684\u5947\u5999\u89e3\u6790\u4e4b\u8def<\/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":851,"_links":{"self":[{"href":"http:\/\/viplao.com\/index.php\/wp-json\/wp\/v2\/posts\/1331"}],"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=1331"}],"version-history":[{"count":2,"href":"http:\/\/viplao.com\/index.php\/wp-json\/wp\/v2\/posts\/1331\/revisions"}],"predecessor-version":[{"id":1333,"href":"http:\/\/viplao.com\/index.php\/wp-json\/wp\/v2\/posts\/1331\/revisions\/1333"}],"wp:attachment":[{"href":"http:\/\/viplao.com\/index.php\/wp-json\/wp\/v2\/media?parent=1331"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/viplao.com\/index.php\/wp-json\/wp\/v2\/categories?post=1331"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/viplao.com\/index.php\/wp-json\/wp\/v2\/tags?post=1331"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}