{"id":2043,"date":"2023-06-22T07:30:47","date_gmt":"2023-06-21T23:30:47","guid":{"rendered":"http:\/\/viplao.com\/?p=2043"},"modified":"2023-06-22T07:54:25","modified_gmt":"2023-06-21T23:54:25","slug":"flink-sql-%e5%ad%97%e8%8a%82%e8%b7%b3%e5%8a%a8flink%e5%ae%9e%e8%b7%b5%e4%b8%8e%e4%bc%98%e5%8c%96","status":"publish","type":"post","link":"http:\/\/viplao.com\/index.php\/2023\/06\/22\/flink-sql-%e5%ad%97%e8%8a%82%e8%b7%b3%e5%8a%a8flink%e5%ae%9e%e8%b7%b5%e4%b8%8e%e4%bc%98%e5%8c%96\/","title":{"rendered":"Flink SQL &#8211; \u5b57\u8282\u8df3\u52a8Flink\u5b9e\u8df5\u4e0e\u4f18\u5316"},"content":{"rendered":"\n<iframe src=\"\/\/player.bilibili.com\/player.html?aid=305628778&#038;bvid=BV1PP411g75B&#038;cid=908165763&#038;page=1\" scrolling=\"no\" border=\"0\" frameborder=\"no\" height=350  width=95% framespacing=\"0\" allowfullscreen=\"true\"> <\/iframe>\n\n\n\n<p>\u672c\u6587\u7531 Apache Flink Committer\uff0c\u5b57\u8282\u8df3\u52a8\u67b6\u6784\u7814\u53d1\u5de5\u7a0b\u5e08\u674e\u672c\u8d85\u5206\u4eab\uff0c\u4ee5\u56db\u4e2a\u7ae0\u8282\u6765\u4ecb\u7ecd Flink \u5728\u5b57\u8282\u7684\u5e94\u7528\u5b9e\u6218\u3002 \u5185\u5bb9\u5982\u4e0b\uff1a<\/p>\n\n\n\n<ol>\n<li>\u6574\u4f53\u4ecb\u7ecd<\/li>\n\n\n\n<li>\u5b9e\u8df5\u4f18\u5316<\/li>\n\n\n\n<li>\u6d41\u6279\u4e00\u4f53<\/li>\n\n\n\n<li>\u672a\u6765\u89c4\u5212<\/li>\n<\/ol>\n\n\n\n<p><strong>\u4e00\u3001\u6574\u4f53\u4ecb\u7ecd<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/pic3.zhimg.com\/80\/v2-eb2cf389f8bf42fc0ec8f6163da86e92_720w.webp\" alt=\"\"\/><\/figure>\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\" 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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href=\"http:\/\/viplao.com\/index.php\/2023\/06\/22\/flink-sql-%e5%ad%97%e8%8a%82%e8%b7%b3%e5%8a%a8flink%e5%ae%9e%e8%b7%b5%e4%b8%8e%e4%bc%98%e5%8c%96\/#2018_%E5%B9%B4_12_%E6%9C%88_Blink_%E5%AE%A3%E5%B8%83%E5%BC%80%E6%BA%90%EF%BC%8C%E7%BB%8F%E5%8E%86%E4%BA%86%E7%BA%A6%E4%B8%80%E5%B9%B4%E7%9A%84%E6%97%B6%E9%97%B4_Flink_19_%E4%BA%8E_2019_%E5%B9%B4_8_%E6%9C%88_22_%E5%8F%91%E5%B8%83%E3%80%82%E5%9C%A8_Flink_19_%E5%8F%91%E5%B8%83%E4%B9%8B%E5%89%8D%E5%AD%97%E8%8A%82%E8%B7%B3%E5%8A%A8%E5%86%85%E9%83%A8%E5%9F%BA%E4%BA%8E_master_%E5%88%86%E6%94%AF%E8%BF%9B%E8%A1%8C%E5%86%85%E9%83%A8%E7%9A%84_SQL_%E5%B9%B3%E5%8F%B0%E6%9E%84%E5%BB%BA%E3%80%82%E7%BB%8F%E5%8E%86%E4%BA%86_23_%E4%B8%AA%E6%9C%88%E7%9A%84%E6%97%B6%E9%97%B4%E5%AD%97%E8%8A%82%E5%86%85%E9%83%A8%E5%9C%A8_19_%E5%B9%B4_10_%E6%9C%88%E4%BB%BD%E5%8F%91%E5%B8%83%E4%BA%86%E5%9F%BA%E4%BA%8E_Flink_19_%E7%9A%84_Blink_planner_%E6%9E%84%E5%BB%BA%E7%9A%84_Streaming_SQL_%E5%B9%B3%E5%8F%B0%EF%BC%8C%E5%B9%B6%E8%BF%9B%E8%A1%8C%E5%86%85%E9%83%A8%E6%8E%A8%E5%B9%BF%E3%80%82%E5%9C%A8%E8%BF%99%E4%B8%AA%E8%BF%87%E7%A8%8B%E4%B8%AD%E5%8F%91%E7%8E%B0%E4%BA%86%E4%B8%80%E4%BA%9B%E6%AF%94%E8%BE%83%E6%9C%89%E6%84%8F%E6%80%9D%E7%9A%84%E9%9C%80%E6%B1%82%E5%9C%BA%E6%99%AF%EF%BC%8C%E4%BB%A5%E5%8F%8A%E4%B8%80%E4%BA%9B%E8%BE%83%E4%B8%BA%E5%A5%87%E6%80%AA%E7%9A%84_BUG%E3%80%82\" title=\"2018 \u5e74 12 \u6708 Blink \u5ba3\u5e03\u5f00\u6e90\uff0c\u7ecf\u5386\u4e86\u7ea6\u4e00\u5e74\u7684\u65f6\u95f4 Flink 1.9 \u4e8e 2019 \u5e74 8 \u6708 22 \u53d1\u5e03\u3002\u5728 Flink 1.9 \u53d1\u5e03\u4e4b\u524d\u5b57\u8282\u8df3\u52a8\u5185\u90e8\u57fa\u4e8e master \u5206\u652f\u8fdb\u884c\u5185\u90e8\u7684 SQL \u5e73\u53f0\u6784\u5efa\u3002\u7ecf\u5386\u4e86 2~3 \u4e2a\u6708\u7684\u65f6\u95f4\u5b57\u8282\u5185\u90e8\u5728 19 \u5e74 10 \u6708\u4efd\u53d1\u5e03\u4e86\u57fa\u4e8e Flink 1.9 \u7684 Blink planner \u6784\u5efa\u7684 Streaming SQL \u5e73\u53f0\uff0c\u5e76\u8fdb\u884c\u5185\u90e8\u63a8\u5e7f\u3002\u5728\u8fd9\u4e2a\u8fc7\u7a0b\u4e2d\u53d1\u73b0\u4e86\u4e00\u4e9b\u6bd4\u8f83\u6709\u610f\u601d\u7684\u9700\u6c42\u573a\u666f\uff0c\u4ee5\u53ca\u4e00\u4e9b\u8f83\u4e3a\u5947\u602a\u7684 BUG\u3002\">2018 \u5e74 12 \u6708 Blink \u5ba3\u5e03\u5f00\u6e90\uff0c\u7ecf\u5386\u4e86\u7ea6\u4e00\u5e74\u7684\u65f6\u95f4 Flink 1.9 \u4e8e 2019 \u5e74 8 \u6708 22 \u53d1\u5e03\u3002\u5728 Flink 1.9 \u53d1\u5e03\u4e4b\u524d\u5b57\u8282\u8df3\u52a8\u5185\u90e8\u57fa\u4e8e master \u5206\u652f\u8fdb\u884c\u5185\u90e8\u7684 SQL \u5e73\u53f0\u6784\u5efa\u3002\u7ecf\u5386\u4e86 2~3 \u4e2a\u6708\u7684\u65f6\u95f4\u5b57\u8282\u5185\u90e8\u5728 19 \u5e74 10 \u6708\u4efd\u53d1\u5e03\u4e86\u57fa\u4e8e Flink 1.9 \u7684 Blink planner \u6784\u5efa\u7684 Streaming SQL \u5e73\u53f0\uff0c\u5e76\u8fdb\u884c\u5185\u90e8\u63a8\u5e7f\u3002\u5728\u8fd9\u4e2a\u8fc7\u7a0b\u4e2d\u53d1\u73b0\u4e86\u4e00\u4e9b\u6bd4\u8f83\u6709\u610f\u601d\u7684\u9700\u6c42\u573a\u666f\uff0c\u4ee5\u53ca\u4e00\u4e9b\u8f83\u4e3a\u5947\u602a\u7684 BUG\u3002<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-2\" 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\u6062\u590d\u80fd\u529b<\/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%ad%97%e8%8a%82%e8%b7%b3%e5%8a%a8flink%e5%ae%9e%e8%b7%b5%e4%b8%8e%e4%bc%98%e5%8c%96\/#%E4%BC%98%E5%8C%96_retract_%E6%94%BE%E5%A4%A7%E9%97%AE%E9%A2%98\" title=\"\u4f18\u5316 retract \u653e\u5927\u95ee\u9898\">\u4f18\u5316 retract \u653e\u5927\u95ee\u9898<\/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%ad%97%e8%8a%82%e8%b7%b3%e5%8a%a8flink%e5%ae%9e%e8%b7%b5%e4%b8%8e%e4%bc%98%e5%8c%96\/#1%E5%8A%9F%E8%83%BD%E4%BC%98%E5%8C%96\" title=\"1.\u529f\u80fd\u4f18\u5316\">1.\u529f\u80fd\u4f18\u5316<\/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%ad%97%e8%8a%82%e8%b7%b3%e5%8a%a8flink%e5%ae%9e%e8%b7%b5%e4%b8%8e%e4%bc%98%e5%8c%96\/#2%E4%B8%9A%E5%8A%A1%E6%89%A9%E5%B1%95\" title=\"2.\u4e1a\u52a1\u6269\u5c55\">2.\u4e1a\u52a1\u6269\u5c55<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"2018_%E5%B9%B4_12_%E6%9C%88_Blink_%E5%AE%A3%E5%B8%83%E5%BC%80%E6%BA%90%EF%BC%8C%E7%BB%8F%E5%8E%86%E4%BA%86%E7%BA%A6%E4%B8%80%E5%B9%B4%E7%9A%84%E6%97%B6%E9%97%B4_Flink_19_%E4%BA%8E_2019_%E5%B9%B4_8_%E6%9C%88_22_%E5%8F%91%E5%B8%83%E3%80%82%E5%9C%A8_Flink_19_%E5%8F%91%E5%B8%83%E4%B9%8B%E5%89%8D%E5%AD%97%E8%8A%82%E8%B7%B3%E5%8A%A8%E5%86%85%E9%83%A8%E5%9F%BA%E4%BA%8E_master_%E5%88%86%E6%94%AF%E8%BF%9B%E8%A1%8C%E5%86%85%E9%83%A8%E7%9A%84_SQL_%E5%B9%B3%E5%8F%B0%E6%9E%84%E5%BB%BA%E3%80%82%E7%BB%8F%E5%8E%86%E4%BA%86_23_%E4%B8%AA%E6%9C%88%E7%9A%84%E6%97%B6%E9%97%B4%E5%AD%97%E8%8A%82%E5%86%85%E9%83%A8%E5%9C%A8_19_%E5%B9%B4_10_%E6%9C%88%E4%BB%BD%E5%8F%91%E5%B8%83%E4%BA%86%E5%9F%BA%E4%BA%8E_Flink_19_%E7%9A%84_Blink_planner_%E6%9E%84%E5%BB%BA%E7%9A%84_Streaming_SQL_%E5%B9%B3%E5%8F%B0%EF%BC%8C%E5%B9%B6%E8%BF%9B%E8%A1%8C%E5%86%85%E9%83%A8%E6%8E%A8%E5%B9%BF%E3%80%82%E5%9C%A8%E8%BF%99%E4%B8%AA%E8%BF%87%E7%A8%8B%E4%B8%AD%E5%8F%91%E7%8E%B0%E4%BA%86%E4%B8%80%E4%BA%9B%E6%AF%94%E8%BE%83%E6%9C%89%E6%84%8F%E6%80%9D%E7%9A%84%E9%9C%80%E6%B1%82%E5%9C%BA%E6%99%AF%EF%BC%8C%E4%BB%A5%E5%8F%8A%E4%B8%80%E4%BA%9B%E8%BE%83%E4%B8%BA%E5%A5%87%E6%80%AA%E7%9A%84_BUG%E3%80%82\"><\/span>2018 \u5e74 12 \u6708 Blink \u5ba3\u5e03\u5f00\u6e90\uff0c\u7ecf\u5386\u4e86\u7ea6\u4e00\u5e74\u7684\u65f6\u95f4 Flink 1.9 \u4e8e 2019 \u5e74 8 \u6708 22 \u53d1\u5e03\u3002\u5728 Flink 1.9 \u53d1\u5e03\u4e4b\u524d\u5b57\u8282\u8df3\u52a8\u5185\u90e8\u57fa\u4e8e master \u5206\u652f\u8fdb\u884c\u5185\u90e8\u7684 SQL \u5e73\u53f0\u6784\u5efa\u3002\u7ecf\u5386\u4e86 2~3 \u4e2a\u6708\u7684\u65f6\u95f4\u5b57\u8282\u5185\u90e8\u5728 19 \u5e74 10 \u6708\u4efd\u53d1\u5e03\u4e86\u57fa\u4e8e Flink 1.9 \u7684 Blink planner \u6784\u5efa\u7684 Streaming SQL \u5e73\u53f0\uff0c\u5e76\u8fdb\u884c\u5185\u90e8\u63a8\u5e7f\u3002\u5728\u8fd9\u4e2a\u8fc7\u7a0b\u4e2d\u53d1\u73b0\u4e86\u4e00\u4e9b\u6bd4\u8f83\u6709\u610f\u601d\u7684\u9700\u6c42\u573a\u666f\uff0c\u4ee5\u53ca\u4e00\u4e9b\u8f83\u4e3a\u5947\u602a\u7684 BUG\u3002<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p><strong>\u57fa\u4e8e 1.9 \u7684 Flink SQL \u6269\u5c55<\/strong><\/p>\n\n\n\n<p>\u867d\u7136\u6700\u65b0\u7684 Flink \u7248\u672c\u5df2\u7ecf\u652f\u6301 SQL \u7684 DDL\uff0c\u4f46 Flink 1.9 \u5e76\u4e0d\u652f\u6301\u3002\u5b57\u8282\u5185\u90e8\u57fa\u4e8e Flink 1.9 \u8fdb\u884c\u4e86 DDL \u7684\u6269\u5c55\u652f\u6301\u4ee5\u4e0b\u8bed\u6cd5\uff1a<\/p>\n\n\n\n<ol>\n<li>create table<\/li>\n\n\n\n<li>create view<\/li>\n\n\n\n<li>create function<\/li>\n\n\n\n<li>add resource<\/li>\n<\/ol>\n\n\n\n<p>\u540c\u65f6 Flink 1.9 \u7248\u672c\u4e0d\u652f\u6301\u7684 watermark \u5b9a\u4e49\u5728 DDL \u6269\u5c55\u540e\u4e5f\u652f\u6301\u4e86\u3002<\/p>\n\n\n\n<p>\u6211\u4eec\u5728\u63a8\u8350\u5927\u5bb6\u5c3d\u91cf\u7684\u53bb\u7528 SQL \u8868\u8fbe\u4f5c\u4e1a\u65f6\u6536\u5230\u5f88\u591a\u201cSQL \u65e0\u6cd5\u8868\u8fbe\u590d\u6742\u7684\u4e1a\u52a1\u903b\u8f91\u201d\u7684\u53cd\u9988\u3002\u65f6\u95f4\u4e45\u4e86\u53d1\u73b0\u5176\u5b9e\u5f88\u591a\u7528\u6237\u6240\u8c13\u7684\u590d\u6742\u4e1a\u52a1\u903b\u8f91\u6709\u7684\u662f\u505a\u4e00\u4e9b\u5916\u90e8\u7684 RPC \u8c03\u7528\uff0c\u5b57\u8282\u5185\u90e8\u9488\u5bf9\u8fd9\u4e2a\u573a\u666f\u505a\u4e86\u4e00\u4e2a RPC \u7684\u7ef4\u8868\u548c sink\uff0c\u8ba9\u7528\u6237\u53ef\u4ee5\u53bb\u8bfb\u5199 RPC \u670d\u52a1\uff0c\u6781\u5927\u7684\u6269\u5c55\u4e86 SQL \u7684\u4f7f\u7528\u573a\u666f\uff0c\u5305\u62ec FaaS \u5176\u5b9e\u8ddf RPC \u4e5f\u662f\u7c7b\u4f3c\u7684\u3002\u5728\u5b57\u8282\u5185\u90e8\u6dfb\u52a0\u4e86 Redis\/Abase\/Bytable\/ByteSQL\/RPC\/FaaS \u7b49\u7ef4\u8868\u7684\u652f\u6301\u3002<\/p>\n\n\n\n<p>\u540c\u65f6\u8fd8\u5b9e\u73b0\u4e86\u591a\u4e2a\u5185\u90e8\u4f7f\u7528\u7684 connectors\uff1a<\/p>\n\n\n\n<ol>\n<li>source: RocketMQ<\/li>\n\n\n\n<li>sink: RocketMQ\/ClickHouse\/Doris\/LogHouse\/Redis\/Abase\/Bytable\/ByteSQL\/RPC\/Print\/Metrics<\/li>\n<\/ol>\n\n\n\n<p>\u5e76\u4e14\u4e3a connector \u5f00\u53d1\u4e86\u914d\u5957\u7684 format\uff1aPB\/Binlog\/Bytes\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E5%9C%A8%E7%BA%BF%E7%9A%84%E7%95%8C%E9%9D%A2%E5%8C%96_SQL_%E5%B9%B3%E5%8F%B0\"><\/span><strong>\u5728\u7ebf\u7684\u754c\u9762\u5316 SQL \u5e73\u53f0<\/strong><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\/v2-4fd930656641503cb5f746996d586a76_720w.webp\" alt=\"\"\/><\/figure>\n\n\n\n<p>\u9664\u4e86\u5bf9 Flink \u672c\u8eab\u529f\u80fd\u7684\u6269\u5c55\uff0c\u5b57\u8282\u5185\u90e8\u4e5f\u4e0a\u7ebf\u4e86\u4e00\u4e2a SQL \u5e73\u53f0\uff0c\u652f\u6301\u4ee5\u4e0b\u529f\u80fd\uff1a<\/p>\n\n\n\n<ul>\n<li>SQL \u7f16\u8f91<\/li>\n\n\n\n<li>SQL \u89e3\u6790<\/li>\n\n\n\n<li>SQL \u8c03\u8bd5<\/li>\n\n\n\n<li>\u81ea\u5b9a\u4e49 UDF \u548c Connector<\/li>\n\n\n\n<li>\u7248\u672c\u63a7\u5236<\/li>\n\n\n\n<li>\u4efb\u52a1\u7ba1\u7406<\/li>\n<\/ul>\n\n\n\n<p><strong>\u4e8c\u3001\u5b9e\u8df5\u4f18\u5316<\/strong><\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><\/h2>\n\n\n\n<p>\u9664\u4e86\u5bf9\u529f\u80fd\u7684\u6269\u5c55\uff0c\u9488\u5bf9 Flink 1.9 SQL \u7684\u4e0d\u8db3\u4e4b\u5904\u4e5f\u505a\u4e86\u4e00\u4e9b\u4f18\u5316\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Window_%E6%80%A7%E8%83%BD%E4%BC%98%E5%8C%96\"><\/span><strong>Window \u6027\u80fd\u4f18\u5316<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p><strong>1\u3001\u652f\u6301\u4e86 window Mini-Batch<\/strong><\/p>\n\n\n\n<p>Mini-Batch \u662f Blink planner \u7684\u4e00\u4e2a\u6bd4\u8f83\u6709\u7279\u8272\u7684\u529f\u80fd\uff0c\u5176\u4e3b\u8981\u601d\u60f3\u662f\u79ef\u6512\u4e00\u6279\u6570\u636e\uff0c\u518d\u8fdb\u884c\u4e00\u6b21\u72b6\u6001\u8bbf\u95ee\uff0c\u8fbe\u5230\u51cf\u5c11\u8bbf\u95ee\u72b6\u6001\u7684\u6b21\u6570\u964d\u4f4e\u5e8f\u5217\u5316\u53cd\u5e8f\u5217\u5316\u7684\u5f00\u9500\u3002\u8fd9\u4e2a\u4f18\u5316\u4e3b\u8981\u662f\u5728 RocksDB \u7684\u573a\u666f\u3002\u5982\u679c\u662f Heap \u72b6\u6001 Mini-Batch \u5e76\u6ca1\u4ec0\u4e48\u4f18\u5316\u3002\u5728\u4e00\u4e9b\u5178\u578b\u7684\u4e1a\u52a1\u573a\u666f\u4e2d\uff0c\u5f97\u5230\u7684\u53cd\u9988\u662f\u80fd\u51cf\u5c11 20~30% \u5de6\u53f3\u7684 CPU \u5f00\u9500\u3002<\/p>\n\n\n\n<p><strong>2\u3001\u6269\u5c55 window \u7c7b\u578b<\/strong><\/p>\n\n\n\n<p>\u76ee\u524d SQL \u4e2d\u7684\u4e09\u79cd\u5185\u7f6e window\uff0c\u6eda\u52a8\u7a97\u53e3\u3001\u6ed1\u52a8\u7a97\u53e3\u3001session \u7a97\u53e3\uff0c\u8fd9\u4e09\u79cd\u8bed\u610f\u7684\u7a97\u53e3\u65e0\u6cd5\u6ee1\u8db3\u4e00\u4e9b\u7528\u6237\u573a\u666f\u7684\u9700\u6c42\u3002\u6bd4\u5982\u5728\u76f4\u64ad\u7684\u573a\u666f\uff0c\u5206\u6790\u5e08\u60f3\u7edf\u8ba1\u4e00\u4e2a\u4e3b\u64ad\u5728\u5f00\u64ad\u4e4b\u540e\uff0c\u6bcf\u4e00\u4e2a\u5c0f\u65f6\u7684 UV(Unique Visitor)\u3001GMV(Gross Merchandise Volume) \u7b49\u6307\u6807\u3002\u81ea\u7136\u7684\u6eda\u52a8\u7a97\u53e3\u7684\u5212\u5206\u65b9\u5f0f\u5e76\u4e0d\u80fd\u591f\u6ee1\u8db3\u7528\u6237\u7684\u9700\u6c42\uff0c\u5b57\u8282\u5185\u90e8\u5c31\u505a\u4e86\u4e00\u4e9b\u5b9a\u5236\u7684\u7a97\u53e3\u6765\u6ee1\u8db3\u7528\u6237\u7684\u4e00\u4e9b\u5171\u6027\u9700\u6c42\u3002<\/p>\n\n\n\n<ol>\n<li><br>&#8212; my_window \u4e3a\u81ea\u5b9a\u4e49\u7684\u7a97\u53e3\uff0c\u6ee1\u8db3\u7279\u5b9a\u7684\u5212\u5206\u65b9\u5f0f<\/li>\n\n\n\n<li><br>SELECT<\/li>\n\n\n\n<li><br>room_id,<\/li>\n\n\n\n<li><br>COUNT(DISTINCT user_id)<\/li>\n\n\n\n<li><br>FROM MySource<\/li>\n\n\n\n<li><br>GROUP BY<\/li>\n\n\n\n<li><br>room_id,<\/li>\n\n\n\n<li><br>my_window(ts, INTERVAL &#8216;1&#8217; HOURS)<\/li>\n\n\n\n<li><\/li>\n<\/ol>\n\n\n\n<p><strong>3\u3001window offset<\/strong><\/p>\n\n\n\n<p>\u8fd9\u662f\u4e00\u4e2a\u8f83\u4e3a\u901a\u7528\u7684\u529f\u80fd\uff0c\u5728 Datastream API \u5c42\u662f\u652f\u6301\u7684\uff0c\u4f46 SQL \u4e2d\u5e76\u6ca1\u6709\u3002\u8fd9\u91cc\u6709\u4e2a\u6bd4\u8f83\u6709\u610f\u601d\u7684\u573a\u666f\uff0c\u7528\u6237\u60f3\u8981\u5f00\u4e00\u5468\u7684\u7a97\u53e3\uff0c\u4e00\u5468\u7684\u7a97\u53e3\u53d8\u6210\u4e86\u4ece\u5468\u56db\u5f00\u59cb\u7684\u975e\u81ea\u7136\u5468\u3002\u56e0\u4e3a\u8c01\u4e5f\u4e0d\u4f1a\u60f3\u5230 1970 \u5e74 1 \u6708 1 \u53f7\u90a3\u5929\u5c45\u7136\u662f\u5468\u56db\u3002\u5728\u52a0\u5165\u4e86 offset \u7684\u652f\u6301\u540e\u5c31\u53ef\u4ee5\u652f\u6301\u6b63\u786e\u7684\u81ea\u7136\u5468\u7a97\u53e3\u3002<\/p>\n\n\n\n<ol>\n<li><br>SELECTroom_id,COUNT(DISTINCT user_id)FROM MySourceGROUP BYroom_id,TUMBLE(ts, INTERVAL &#8216;7&#8217; DAY, INTERVAL &#8216;3&#8217;, DAY)<\/li>\n\n\n\n<li><\/li>\n\n\n\n<li><\/li>\n<\/ol>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E7%BB%B4%E8%A1%A8%E4%BC%98%E5%8C%96\"><\/span><strong>\u7ef4\u8868\u4f18\u5316<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p><strong>1\u3001\u5ef6\u8fdf Join<\/strong><\/p>\n\n\n\n<p>\u7ef4\u8868 Join \u7684\u573a\u666f\u4e0b\u56e0\u4e3a\u7ef4\u8868\u7ecf\u5e38\u53d1\u751f\u53d8\u5316\u5c24\u5176\u662f\u65b0\u589e\u7ef4\u5ea6\uff0c\u800c Join \u64cd\u4f5c\u53d1\u751f\u5728\u7ef4\u5ea6\u65b0\u589e\u4e4b\u524d\uff0c\u7ecf\u5e38\u5bfc\u81f4\u5173\u8054\u4e0d\u4e0a\u3002<\/p>\n\n\n\n<p><br>\u6240\u4ee5\u7528\u6237\u5e0c\u671b\u5982\u679c Join \u4e0d\u5230\uff0c\u5219\u6682\u65f6\u5c06\u6570\u636e\u7f13\u5b58\u8d77\u6765\u4e4b\u540e\u518d\u8fdb\u884c\u5c1d\u8bd5\uff0c\u5e76\u4e14\u53ef\u4ee5\u63a7\u5236\u5c1d\u8bd5\u6b21\u6570\uff0c\u80fd\u591f\u81ea\u5b9a\u4e49\u5ef6\u8fdf Join \u7684\u89c4\u5219\u3002\u8fd9\u4e2a\u9700\u6c42\u573a\u666f\u4e0d\u5355\u5355\u5728\u5b57\u8282\u5185\u90e8\uff0c\u793e\u533a\u7684\u5f88\u591a\u540c\u5b66\u4e5f\u6709\u7c7b\u4f3c\u7684\u9700\u6c42\u3002<\/p>\n\n\n\n<p>\u57fa\u4e8e\u4e0a\u9762\u7684\u573a\u666f\u5b9e\u73b0\u4e86\u5ef6\u8fdf Join \u529f\u80fd\uff0c\u6dfb\u52a0\u4e86\u4e00\u4e2a\u53ef\u4ee5\u652f\u6301\u5ef6\u8fdf Join \u7ef4\u8868\u7684\u7b97\u5b50\u3002\u5f53 Join \u6ca1\u6709\u547d\u4e2d\uff0clocal cache \u4e0d\u4f1a\u7f13\u5b58\u7a7a\u7684\u7ed3\u679c\uff0c\u540c\u65f6\u5c06\u6570\u636e\u6682\u65f6\u4fdd\u5b58\u5728\u4e00\u4e2a\u72b6\u6001\u4e2d\uff0c\u4e4b\u540e\u6839\u636e\u8bbe\u7f6e\u5b9a\u65f6\u5668\u4ee5\u53ca\u5b83\u7684\u91cd\u8bd5\u6b21\u6570\u8fdb\u884c\u91cd\u8bd5\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/pic3.zhimg.com\/80\/v2-243a4497951a2b739971aef9b0e5e126_720w.webp\" alt=\"\"\/><\/figure>\n\n\n\n<p><strong>2\u3001\u7ef4\u8868 Keyby \u529f\u80fd<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/pic4.zhimg.com\/80\/v2-bf242776f44f70bfdd0b50d8ef0e42fb_720w.webp\" alt=\"\"\/><\/figure>\n\n\n\n<p>\u901a\u8fc7\u62d3\u6251\u6211\u4eec\u53d1\u73b0 Cacl \u7b97\u5b50\u548c lookUpJoin \u7b97\u5b50\u662f chain \u5728\u4e00\u8d77\u7684\u3002\u56e0\u4e3a\u5b83\u6ca1\u6709\u4e00\u4e2a key \u7684\u8bed\u4e49\u3002<\/p>\n\n\n\n<p><br>\u5f53\u4f5c\u4e1a\u5e76\u884c\u5ea6\u6bd4\u8f83\u5927\uff0c\u6bcf\u4e00\u4e2a\u7ef4\u8868 Join \u7684 subtask\uff0c\u8bbf\u95ee\u7684\u662f\u6240\u6709\u7684\u7f13\u5b58\u7a7a\u95f4\uff0c\u8fd9\u6837\u5bf9\u7f13\u5b58\u6765\u8bf4\u6709\u5f88\u5927\u7684\u538b\u529b\u3002<\/p>\n\n\n\n<p>\u4f46\u89c2\u5bdf Join \u7684 SQL\uff0c\u7b49\u503c Join \u662f\u5929\u7136\u5177\u6709 Hash \u5c5e\u6027\u7684\u3002\u76f4\u63a5\u5f00\u653e\u4e86\u914d\u7f6e\uff0c\u8fd0\u884c\u7528\u6237\u76f4\u63a5\u628a\u7ef4\u8868 Join \u7684 key \u4f5c\u4e3a Hash \u7684\u6761\u4ef6\uff0c\u5c06\u6570\u636e\u8fdb\u884c\u5206\u533a\u3002\u8fd9\u6837\u5c31\u80fd\u4fdd\u8bc1\u4e0b\u6e38\u6bcf\u4e00\u4e2a\u7b97\u5b50\u7684 subtask \u4e4b\u95f4\u7684\u8bbf\u95ee\u7a7a\u95f4\u662f\u72ec\u7acb\u7684\uff0c\u8fd9\u6837\u53ef\u4ee5\u5927\u5927\u7684\u63d0\u5347\u5f00\u59cb\u7684\u7f13\u5b58\u547d\u4e2d\u7387\u3002<\/p>\n\n\n\n<p>\u9664\u4e86\u4ee5\u4e0a\u7684\u4f18\u5316\uff0c\u8fd8\u6709\u4e24\u70b9\u76ee\u524d\u6b63\u5728\u5f00\u53d1\u7684\u7ef4\u8868\u4f18\u5316\u3002<\/p>\n\n\n\n<ol>\n<li><strong>\u5e7f\u64ad\u7ef4\u8868<\/strong>\uff1a\u6709\u4e9b\u573a\u666f\u4e0b\u7ef4\u8868\u6bd4\u8f83\u5c0f\uff0c\u800c\u4e14\u66f4\u65b0\u4e0d\u9891\u7e41\uff0c\u4f46\u4f5c\u4e1a\u7684 QPS \u7279\u522b\u9ad8\u3002\u5982\u679c\u4f9d\u7136\u8bbf\u95ee\u5916\u90e8\u7cfb\u7edf\u8fdb\u884c Join\uff0c\u90a3\u4e48\u538b\u529b\u4f1a\u975e\u5e38\u5927\u3002\u5e76\u4e14\u5f53\u4f5c\u4e1a Failover \u7684\u65f6\u5019 local cache \u4f1a\u5168\u90e8\u5931\u6548\uff0c\u8fdb\u800c\u53c8\u5bf9\u5916\u90e8\u7cfb\u7edf\u9020\u6210\u5f88\u5927\u8bbf\u95ee\u538b\u529b\u3002\u90a3\u4e48\u6539\u8fdb\u7684\u65b9\u6848\u662f\u5b9a\u671f\u5168\u91cf scan \u7ef4\u8868\uff0c\u901a\u8fc7Join key hash \u7684\u65b9\u5f0f\u53d1\u9001\u5230\u4e0b\u6e38\uff0c\u66f4\u65b0\u6bcf\u4e2a\u7ef4\u8868 subtask \u7684\u7f13\u5b58\u3002<\/li>\n\n\n\n<li><strong>Mini-Batch<\/strong>\uff1a\u4e3b\u8981\u9488\u5bf9\u4e00\u4e9b I\/O \u8bf7\u6c42\u6bd4\u8f83\u9ad8\uff0c\u7cfb\u7edf\u53c8\u652f\u6301 batch \u8bf7\u6c42\u7684\u80fd\u529b\uff0c\u6bd4\u5982\u8bf4 RPC\u3001HBase\u3001Redis \u7b49\u3002\u4ee5\u5f80\u7684\u65b9\u5f0f\u90fd\u662f\u9010\u6761\u7684\u8bf7\u6c42\uff0c\u4e14 Async I\/O \u53ea\u80fd\u89e3\u51b3 I\/O \u5ef6\u8fdf\u7684\u95ee\u9898,\u5e76\u4e0d\u80fd\u89e3\u51b3\u8bbf\u95ee\u91cf\u7684\u95ee\u9898\u3002\u901a\u8fc7\u5b9e\u73b0 Mini-Batch \u7248\u672c\u7684\u7ef4\u8868\u7b97\u5b50\uff0c\u5927\u91cf\u964d\u4f4e\u7ef4\u8868\u5173\u8054\u8bbf\u95ee\u5916\u90e8\u5b58\u50a8\u6b21\u6570\u3002<\/li>\n<\/ol>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Join_%E4%BC%98%E5%8C%96\"><\/span><strong>Join \u4f18\u5316<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>\u76ee\u524d Flink \u652f\u6301\u7684\u4e09\u79cd Join \u65b9\u5f0f\uff1b\u5206\u522b\u662f Interval Join\u3001Regular Join\u3001Temporal Table Function\u3002<\/p>\n\n\n\n<p>\u524d\u4e24\u79cd\u8bed\u4e49\u662f\u4e00\u6837\u7684\u6d41\u548c\u6d41 Join\u3002\u800c Temporal Table \u662f\u6d41\u548c\u8868\u7684\u7684 Join\uff0c\u53f3\u8fb9\u7684\u6d41\u4f1a\u4ee5\u4e3b\u952e\u7684\u5f62\u5f0f\u5f62\u6210\u4e00\u5f20\u8868\uff0c\u5de6\u8fb9\u7684\u6d41\u53bb Join \u8fd9\u5f20\u8868\uff0c\u8fd9\u6837\u4e00\u6b21 Join \u53ea\u80fd\u6709\u4e00\u6761\u6570\u636e\u53c2\u4e0e\u5e76\u4e14\u53ea\u8fd4\u56de\u4e00\u4e2a\u7ed3\u679c\u3002\u800c\u4e0d\u662f\u6709\u591a\u5c11\u6761\u90fd\u80fd Join \u5230\u3002<\/p>\n\n\n\n<p>\u5b83\u4eec\u4e4b\u95f4\u7684\u533a\u522b\u5217\u4e86\u51e0\u70b9\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/pic3.zhimg.com\/80\/v2-0695ecf054603e706f75b3f67503a916_720w.webp\" alt=\"\"\/><\/figure>\n\n\n\n<p>\u53ef\u4ee5\u770b\u5230\u4e09\u79cd Join \u65b9\u5f0f\u90fd\u6709\u5b83\u672c\u8eab\u7684\u4e00\u4e9b\u7f3a\u9677\u3002<\/p>\n\n\n\n<ol>\n<li>Interval Join \u76ee\u524d\u4f7f\u7528\u4e0a\u7684\u7f3a\u9677\u662f\u5b83\u4f1a\u4ea7\u751f\u4e00\u4e2a out join \u6570\u636e\u548c watermark \u4e71\u5e8f\u7684\u60c5\u51b5\u3002<\/li>\n\n\n\n<li>Regular Join \u7684\u8bdd\uff0c\u5b83\u6700\u5927\u7684\u7f3a\u9677\u662f retract \u653e\u5927(\u4e4b\u540e\u4f1a\u8be6\u7ec6\u8bf4\u660e\u8fd9\u4e2a\u95ee\u9898)\u3002<\/li>\n\n\n\n<li>Temporal table function \u7684\u95ee\u9898\u8f83\u5176\u5b83\u591a\u4e00\u4e9b\uff0c\u6709\u4e09\u4e2a\u95ee\u9898\u3002<\/li>\n<\/ol>\n\n\n\n<ul>\n<li>\u4e0d\u652f\u6301 DDl<\/li>\n\n\n\n<li>\u4e0d\u652f\u6301 out join \u7684\u8bed\u4e49 (FLINK-7865 \u7684\u9650\u5236)<\/li>\n\n\n\n<li>\u53f3\u4fa7\u6570\u636e\u65ad\u6d41\u5bfc\u81f4 watermark \u4e0d\u66f4\u65b0\uff0c\u4e0b\u6e38\u65e0\u6cd5\u6b63\u786e\u8ba1\u7b97 (FLINK-18934)<\/li>\n<\/ul>\n\n\n\n<p>\u5bf9\u4e8e\u4ee5\u4e0a\u7684\u4e0d\u8db3\u4e4b\u5904\u5b57\u8282\u5185\u90e8\u90fd\u505a\u4e86\u5bf9\u5e94\u7684\u4fee\u6539\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E5%A2%9E%E5%BC%BA_Checkpoint_%E6%81%A2%E5%A4%8D%E8%83%BD%E5%8A%9B\"><\/span><strong>\u589e\u5f3a Checkpoint \u6062\u590d\u80fd\u529b<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>\u5bf9\u4e8e SQL \u4f5c\u4e1a\u6765\u8bf4\u4e00\u65e6\u53d1\u751f\u6761\u4ef6\u53d8\u5316\u90fd\u5f88\u96be\u4ece checkpoint \u4e2d\u6062\u590d\u3002<\/p>\n\n\n\n<p>SQL \u4f5c\u4e1a\u786e\u5b9e\u4ece checkpoint \u6062\u590d\u7684\u80fd\u529b\u6bd4\u8f83\u5f31\uff0c\u56e0\u4e3a\u6709\u65f6\u5019\u505a\u4e00\u4e9b\u770b\u8d77\u6765\u4e0d\u592a\u5f71\u54cd checkpoint \u7684\u4fee\u6539\uff0c\u5b83\u4ecd\u7136\u65e0\u6cd5\u6062\u590d\u3002\u65e0\u6cd5\u6062\u590d\u4e3b\u8981\u6709\u4e24\u70b9\uff1b<\/p>\n\n\n\n<ul>\n<li>\u7b2c\u4e00\u70b9\uff1aoperate ID \u662f\u81ea\u52a8\u751f\u6210\u7684\uff0c\u7136\u540e\u56e0\u4e3a\u67d0\u4e9b\u539f\u56e0\u5bfc\u81f4\u5b83\u751f\u6210\u7684 ID \u6539\u53d8\u4e86\u3002<\/li>\n\n\n\n<li>\u7b2c\u4e8c\u70b9\uff1a\u7b97\u5b50\u7684\u8ba1\u7b97\u7684\u903b\u8f91\u53d1\u751f\u4e86\u6539\u53d8\uff0c\u5373\u7b97\u5b50\u5185\u90e8\u7684\u72b6\u6001\u7684\u5b9a\u4e49\u53d1\u751f\u4e86\u53d8\u5316\u3002<\/li>\n<\/ul>\n\n\n\n<p><strong>\u4f8b\u5b501\uff1a\u5e76\u884c\u5ea6\u53d1\u751f\u4fee\u6539\u5bfc\u81f4\u65e0\u6cd5\u6062\u590d\u3002<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/pic4.zhimg.com\/80\/v2-069a9a7a5b7cadb6db49cc3eccff81db_720w.webp\" alt=\"\"\/><\/figure>\n\n\n\n<p>source \u662f\u4e00\u4e2a\u6700\u5e38\u89c1\u7684\u6709\u72b6\u6001\u7684\u7b97\u5b50\uff0csource \u5982\u679c\u548c\u4e4b\u540e\u7684\u7b97\u5b50\u7684 operator chain \u903b\u8f91\u53d1\u751f\u4e86\u6539\u53d8\uff0c\u662f\u5b8c\u5168\u65e0\u6cd5\u6062\u590d\u7684\u3002<\/p>\n\n\n\n<p><br>\u4e0b\u56fe\u5de6\u4e0a\u662f\u6b63\u5e38\u7684\u793e\u533a\u7248\u7684\u4f5c\u4e1a\u4f1a\u4ea7\u751f\u7684\u4e00\u4e2a\u903b\u8f91\uff0c source \u548c\u540e\u9762\u7684\u5e76\u884c\u5ea6\u4e00\u6837\u7684\u7b97\u5b50\u4f1a\u88ab chain \u5728\u4e00\u8d77\uff0c\u7528\u6237\u662f\u65e0\u6cd5\u53bb\u6539\u53d8\u7684\u3002\u4f46\u7b97\u5b50\u5e76\u884c\u5ea6\u662f\u5e38\u4f1a\u4f1a\u53d1\u751f\u4fee\u6539\uff0c\u6bd4\u5982\u8bf4 source \u7531\u539f\u6765\u7684 100 \u4fee\u6539\u4e3a 50\uff0ccacl \u7684\u5e76\u53d1\u662f 100\u3002\u6b64\u65f6 chain \u7684\u903b\u8f91\u5c31\u4f1a\u53d1\u751f\u53d8\u5316\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/pic4.zhimg.com\/80\/v2-918b71b952de61b16862aa3ac19f341f_720w.webp\" alt=\"\"\/><\/figure>\n\n\n\n<p>\u9488\u5bf9\u8fd9\u79cd\u60c5\u51b5\uff0c\u5b57\u8282\u5185\u90e8\u505a\u4e86\u4fee\u6539\uff0c\u5141\u8bb8\u7528\u6237\u53bb\u914d\u7f6e\uff0c\u5373\u4f7f source \u7684\u5e76\u884c\u5ea6\u8ddf\u540e\u9762\u6574\u4f53\u7684\u4f5c\u4e1a\u7684\u5e76\u884c\u5ea6\u662f\u4e00\u6837\u7684\uff0c\u4e5f\u8ba9\u5176\u4e0d\u4e0e\u4e4b\u540e\u7684\u7b97\u5b50 chain \u5728\u4e00\u8d77\u3002<\/p>\n\n\n\n<p><strong>\u4f8b\u5b502\uff1aDAG \u6539\u53d8\u5bfc\u81f4\u65e0\u6cd5\u6062\u590d\u3002<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/pic3.zhimg.com\/80\/v2-e9af8d595cbe36a999abc310ada1c232_720w.webp\" alt=\"\"\/><\/figure>\n\n\n\n<p>\u8fd9\u662f\u4e00\u79cd\u6bd4\u8f83\u7279\u6b8a\u7684\u60c5\u51b5\uff0c\u6709\u4e00\u6761 SQL (\u4e0a\u56fe)\uff0c\u53ef\u4ee5\u770b\u5230 source \u6ca1\u6709\u53d1\u751f\u53d8\u5316\uff0c\u4e4b\u540e\u7684\u4e09\u4e2a\u805a\u5408\u4e92\u76f8\u4e4b\u95f4\u6ca1\u6709\u5173\u7cfb\uff0c\u72b6\u6001\u7adf\u7136\u4e5f\u662f\u65e0\u6cd5\u6062\u590d\u3002<\/p>\n\n\n\n<p>\u4f5c\u4e1a\u4e4b\u6240\u4ee5\u65e0\u6cd5\u6062\u590d\uff0c\u662f\u56e0\u4e3a operator ID \u751f\u6210\u89c4\u5219\u5bfc\u81f4\u7684\u3002\u76ee\u524d SQL \u4e2d operator ID \u7684\u751f\u6210\u7684\u89c4\u5219\u4e0e\u4e0a\u6e38\u3001\u672c\u8eab\u914d\u7f6e\u4ee5\u53ca\u4e0b\u6e38\u53ef\u4ee5 chain \u5728\u4e00\u8d77\u7684\u7b97\u5b50\u7684\u6570\u91cf\u90fd\u6709\u5173\u7cfb\u3002 \u56e0\u4e3a\u65b0\u589e\u6307\u6807\uff0c\u4f1a\u5bfc\u81f4\u65b0\u589e\u4e00\u4e2a Calc \u7684\u4e0b\u6e38\u8282\u70b9\uff0c\u8fdb\u800c\u5bfc\u81f4 operator ID \u53d1\u751f\u53d8\u5316\u3002<\/p>\n\n\n\n<p><br>\u4e3a\u4e86\u5904\u7406\u8fd9\u79cd\u60c5\u51b5\uff0c\u652f\u6301\u4e86\u4e00\u79cd\u7279\u6b8a\u7684\u914d\u7f6e\u6a21\u5f0f\uff0c\u5141\u8bb8\u7528\u6237\u914d\u7f6e\u751f\u6210 operator ID \u7684\u65f6\u5019\u53ef\u4ee5\u5ffd\u7565\u4e0b\u6e38 chain \u5728\u4e00\u8d77\u7b97\u5b50\u6570\u91cf\u7684\u6761\u4ef6\u3002<\/p>\n\n\n\n<p><strong>\u4f8b\u5b503\uff1a\u65b0\u589e\u805a\u5408\u6307\u6807\u5bfc\u81f4\u65e0\u6cd5\u6062\u590d<\/strong><\/p>\n\n\n\n<p>\u8fd9\u5757\u662f\u7528\u6237\u8bc9\u6c42\u6700\u5927\u7684\uff0c\u4e5f\u662f\u6700\u590d\u6742\u7684\u90e8\u5206\u3002\u7528\u6237\u671f\u671b\u65b0\u589e\u4e00\u4e9b\u805a\u5408\u6307\u6807\u540e\uff0c\u539f\u6765\u7684\u6307\u6807\u8981\u80fd\u4ece checkpoint \u4e2d\u6062\u590d\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/pic3.zhimg.com\/80\/v2-ccd9b9a5d25a8b426aa6bde3f5e6781a_720w.webp\" alt=\"\"\/><\/figure>\n\n\n\n<p>\u53ef\u4ee5\u770b\u5230\u56fe\u4e2d\u5de6\u90e8\u5206\u662f SQL \u751f\u6210\u7684\u7b97\u5b50\u903b\u8f91\u3002count\uff0csum\uff0csum\uff0ccount\uff0cdistinct \u4f1a\u4ee5\u4e00\u4e2a BaseRow \u7684\u7ed3\u6784\u5b58\u50a8\u5728 ValueState \u4e2d\u3002distinct \u6bd4\u8f83\u7279\u6b8a\u4e00\u4e9b\uff0c\u8fd8\u4f1a\u5355\u72ec\u5b58\u50a8\u5728\u4e00\u4e2a MapState \u4e2d\u3002<\/p>\n\n\n\n<p><br>\u8fd9\u5bfc\u81f4\u4e86\u5982\u65b0\u589e\u6216\u8005\u51cf\u5c11\u6307\u6807\uff0c\u90fd\u4f1a\u4f7f\u539f\u5148\u7684\u72b6\u6001\u6ca1\u529e\u6cd5\u4ece ValueState \u4e2d\u6b63\u5e38\u6062\u590d\uff0c\u56e0\u4e3a VauleState \u4e2d\u5b58\u50a8\u7684\u72b6\u6001 \u201cschema\u201d \u548c\u65b0\u7684\uff08\u4fee\u6539\u6307\u6807\u540e\uff09\u7684 \u201cschema\u201d\u4e0d\u5339\u914d\uff0c\u65e0\u6cd5\u6b63\u5e38\u53cd\u5e8f\u5217\u5316\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/pic3.zhimg.com\/80\/v2-0bebefd030bf8a038023ba738a9a4f3e_720w.webp\" alt=\"\"\/><\/figure>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/pic2.zhimg.com\/80\/v2-3d9ebe2ed4e4eb2e51184fced7fb6b99_720w.webp\" alt=\"\"\/><\/figure>\n\n\n\n<p>\u5728\u8ba8\u8bba\u89e3\u51b3\u65b9\u6848\u4e4b\u524d\uff0c\u6211\u4eec\u5148\u56de\u987e\u4e00\u4e0b\u6b63\u5e38\u7684\u6062\u590d\u6d41\u3002\u5148\u4ece checkpoint \u4e2d\u6062\u590d\u51fa\u72b6\u6001\u7684 serializer\uff0c\u518d\u901a\u8fc7 serializer \u628a\u72b6\u6001\u6062\u590d\u3002\u63a5\u4e0b\u6765 operator \u53bb\u6ce8\u518c\u65b0\u7684\u72b6\u6001\u5b9a\u4e49\uff0c\u65b0\u7684\u72b6\u6001\u5b9a\u4e49\u4f1a\u548c\u539f\u5148\u7684\u72b6\u6001\u5b9a\u4e49\u8fdb\u884c\u4e00\u4e2a\u517c\u5bb9\u6027\u5bf9\u6bd4\uff0c\u5982\u679c\u662f\u517c\u5bb9\u5219\u72b6\u6001\u6062\u590d\u6210\u529f\uff0c\u5982\u679c\u4e0d\u517c\u5bb9\u5219\u629b\u51fa\u5f02\u5e38\u4efb\u52a1\u5931\u8d25\u3002<\/p>\n\n\n\n<p><br>\u4e0d\u517c\u5bb9\u7684\u53e6\u4e00\u79cd\u5904\u7406\u60c5\u51b5\u662f\u5141\u8bb8\u8fd4\u56de\u4e00\u4e2a migration\uff08\u5b9e\u73b0\u4e24\u4e2a\u4e0d\u5339\u914d\u7c7b\u578b\u7684\u72b6\u6001\u6062\u590d\uff09\u90a3\u4e48\u4e5f\u53ef\u4ee5\u6062\u590d\u6210\u529f\u3002<\/p>\n\n\n\n<p>\u9488\u5bf9\u4e0a\u9762\u7684\u6d41\u7a0b\u505a\u51fa\u5bf9\u5e94\u7684\u4fee\u6539\uff1a<\/p>\n\n\n\n<ol>\n<li>\u7b2c\u4e00\u6b65\u4f7f\u65b0\u65e7 serializer \u4e92\u76f8\u77e5\u9053\u5bf9\u65b9\u7684\u4fe1\u606f\uff0c\u6dfb\u52a0\u4e00\u4e2a\u63a5\u53e3\uff0c\u4e14\u4fee\u6539\u4e86 statebackend resolve compatibility \u7684\u8fc7\u7a0b\uff0c\u628a\u65e7\u7684\u4fe1\u606f\u4f20\u9012\u7ed9\u65b0\u7684\uff0c\u5e76\u4f7f\u5176\u83b7\u53d6\u6574\u4e2a migrate \u8fc7\u7a0b\u3002<\/li>\n\n\n\n<li>\u7b2c\u4e8c\u6b65\u5224\u65ad\u65b0\u8001\u4e4b\u95f4\u662f\u5426\u517c\u5bb9\uff0c\u5982\u679c\u4e0d\u517c\u5bb9\u662f\u5426\u9700\u8981\u505a\u4e00\u6b21 migration\u3002\u7136\u540e\u8ba9\u65e7\u7684 serializer \u53bb\u6062\u590d\u4e00\u904d\u72b6\u6001\uff0c\u5e76\u4f7f\u7528\u65b0\u7684 serializer \u5199\u5165\u65b0\u7684\u72b6\u6001\u3002<\/li>\n\n\n\n<li>\u5bf9 aggregation \u7684\u4ee3\u7801\u751f\u6210\u8fdb\u884c\u5904\u7406\uff0c\u5f53\u53d1\u73b0 aggregation \u62ff\u5230\u7684\u662f\u6307\u6807\u662f null\uff0c\u90a3\u4e48\u5c06\u505a\u4e00\u4e9b\u521d\u59cb\u5316\u7684\u5de5\u4f5c\u3002<\/li>\n<\/ol>\n\n\n\n<p>\u901a\u8fc7\u4ee5\u4e0a\u7684\u4fee\u6539\u57fa\u672c\u5c31\u53ef\u4ee5\u505a\u5230\u6b63\u5e38\u7684\uff0c\u65b0\u589e\u7684\u805a\u5408\u6307\u6807\u4ece\u62c6\u5f00\u7684\u65b9\u6848\u6062\u590d\u3002<\/p>\n\n\n\n<p><strong>\u4e09\u3001\u6d41\u6279\u4e00\u4f53\u63a2\u7d22<\/strong><\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><\/h2>\n\n\n\n<p><strong>\u4e1a\u52a1\u73b0\u72b6<\/strong><\/p>\n\n\n\n<p>\u5b57\u8282\u8df3\u52a8\u5185\u90e8\u5bf9\u6d41\u6279\u4e00\u4f53\u548c\u4e1a\u52a1\u63a8\u5e7f\u4e4b\u524d\uff0c\u6280\u672f\u56e2\u961f\u63d0\u524d\u505a\u4e86\u5927\u91cf\u6280\u672f\u65b9\u9762\u7684\u63a2\u7d22\u3002\u6574\u4f53\u5224\u65ad\u662f SQL \u8fd9\u4e00\u5c42\u662f\u53ef\u4ee5\u505a\u5230\u6d41\u6279\u4e00\u4f53\u7684\u8bed\u4e49\uff0c\u4f46\u5b9e\u8df5\u4e2d\u5374\u53c8\u53d1\u73b0\u4e0d\u5c11\u4e0d\u540c\u3002<\/p>\n\n\n\n<p>\u6bd4\u5982\u8bf4\u6d41\u8ba1\u7b97\u7684 session window\uff0c\u6216\u662f\u57fa\u4e8e\u5904\u7406\u65f6\u95f4\u7684 window\uff0c\u5728\u6279\u8ba1\u7b97\u4e2d\u65e0\u6cd5\u505a\u5230\u3002\u540c\u65f6 SQL \u5728\u6279\u8ba1\u7b97\u4e2d\u4e00\u4e9b\u590d\u6742\u7684 over window\uff0c\u5728\u6d41\u8ba1\u7b97\u4e2d\u4e5f\u6ca1\u6709\u5bf9\u5e94\u7684\u5b9e\u73b0\u3002<\/p>\n\n\n\n<p>\u4f46\u8fd9\u4e9b\u7279\u522b\u7684\u573a\u666f\u53ef\u80fd\u53ea\u5360 10% \u751a\u81f3\u66f4\u5c11\uff0c\u6240\u4ee5\u7528 SQL \u53bb\u843d\u5b9e\u6d41\u6279\u4e00\u4f53\u662f\u53ef\u884c\u7684\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/pic3.zhimg.com\/80\/v2-a0261e4f7614225ae1e51dd14a5b0aca_720w.webp\" alt=\"\"\/><\/figure>\n\n\n\n<p><strong>\u6d41\u6279\u4e00\u4f53<\/strong><\/p>\n\n\n\n<p>\u8fd9\u5f20\u56fe\u662f\u6bd4\u8f83\u5e38\u89c1\u7684\u548c\u5927\u591a\u6570\u516c\u53f8\u91cc\u7684\u67b6\u6784\u90fd\u7c7b\u4f3c\u3002\u8fd9\u79cd\u67b6\u6784\u6709\u4ec0\u4e48\u7f3a\u9677\u5462\uff1f<\/p>\n\n\n\n<ol>\n<li>\u6570\u636e\u4e0d\u540c\u6e90\uff1a\u6279\u4efb\u52a1\u4e00\u822c\u4f1a\u6709\u4e00\u6b21\u524d\u7f6e\u5904\u7406\u4efb\u52a1\uff0c\u4e0d\u7ba1\u662f\u79bb\u7ebf\u7684\u4e5f\u597d\u5b9e\u65f6\u7684\u4e5f\u597d\uff0c\u9884\u5148\u8fdb\u8fc7\u4e00\u5c42\u52a0\u5de5\u540e\u5199\u5165 Hive\u3002\u800c\u5b9e\u65f6\u4efb\u52a1\u662f\u4ece kafka \u8bfb\u53d6\u539f\u59cb\u7684\u6570\u636e\uff0c\u53ef\u80fd\u662f json \u683c\u5f0f\uff0c\u4e5f\u53ef\u80fd\u662f avro \u7b49\u7b49\u3002\u76f4\u63a5\u5bfc\u81f4\u6279\u4efb\u52a1\u4e2d\u53ef\u6267\u884c\u7684 SQL \u5728\u6d41\u4efb\u52a1\u4e2d\u6ca1\u6709\u7ed3\u679c\u751f\u6210\u6216\u8005\u6267\u884c\u7ed3\u679c\u4e0d\u5bf9\u3002<\/li>\n\n\n\n<li>\u8ba1\u7b97\u4e0d\u540c\u6e90\uff1a\u6279\u4efb\u52a1\u4e00\u822c\u662f Hive + Spark \u7684\u67b6\u6784\uff0c\u800c\u6d41\u4efb\u52a1\u57fa\u672c\u90fd\u662f\u57fa\u4e8e Flink\u3002\u4e0d\u540c\u7684\u6267\u884c\u5f15\u64ce\u5728\u5b9e\u73b0\u4e0a\u90fd\u4f1a\u6709\u4e00\u4e9b\u5dee\u5f02\uff0c\u5bfc\u81f4\u7ed3\u679c\u4e0d\u4e00\u81f4\u3002\u4e0d\u540c\u7684\u6267\u884c\u5f15\u64ce\u6709\u4e0d\u540c\u7684 API \u5b9a\u4e49 UDF\uff0c\u5b83\u4eec\u4e4b\u95f4\u4e5f\u662f\u65e0\u6cd5\u88ab\u516c\u7528\u7684\u3002\u5927\u90e8\u5206\u60c5\u51b5\u4e0b\u90fd\u662f\u7ef4\u62a4\u4e24\u5957\u57fa\u4e8e\u4e0d\u540c API \u5b9e\u73b0\u7684\u76f8\u540c\u529f\u80fd\u7684 UDF\u3002<\/li>\n<\/ol>\n\n\n\n<p>\u9274\u4e8e\u4e0a\u9762\u7684\u95ee\u9898\uff0c\u63d0\u51fa\u4e86\u57fa\u4e8e Flink \u7684\u6d41\u6279\u4e00\u4f53\u67b6\u6784\u6765\u89e3\u51b3\u3002<\/p>\n\n\n\n<ol>\n<li>\u6570\u636e\u4e0d\u540c\u6e90\uff1a\u6d41\u5f0f\u5904\u7406\u5148\u901a\u8fc7 Flink \u5904\u7406\u4e4b\u540e\u5199\u5165 MQ \u4f9b\u4e0b\u6e38\u6d41\u5f0f Flink job \u53bb\u6d88\u8d39\uff0c\u5bf9\u4e8e\u6279\u5f0f\u5904\u7406\u7531 Flink \u5904\u7406\u540e\u6d41\u5f0f\u5199\u5165\u5230 Hive\uff0c\u518d\u7531\u6279\u5f0f\u7684 Flink job \u53bb\u5904\u7406\u3002<\/li>\n\n\n\n<li>\u5f15\u64ce\u4e0d\u540c\u6e90\uff1a\u65e2\u7136\u90fd\u662f\u57fa\u4e8e Flink \u5f00\u53d1\u7684\u6d41\u5f0f\uff0c\u6279\u5f0f job\uff0c\u81ea\u7136\u6ca1\u6709\u8ba1\u7b97\u4e0d\u540c\u6e90\u95ee\u9898\uff0c\u540c\u65f6\u4e5f\u907f\u514d\u4e86\u7ef4\u62a4\u591a\u5957\u76f8\u540c\u529f\u80fd\u7684 UDF\u3002<\/li>\n<\/ol>\n\n\n\n<p>\u57fa\u4e8e Flink \u5b9e\u73b0\u7684\u6d41\u6279\u4e00\u4f53\u67b6\u6784\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/pic1.zhimg.com\/80\/v2-a9dda712b4601a4ca4744f4fb0d0dbf0_720w.webp\" alt=\"\"\/><\/figure>\n\n\n\n<p><strong>\u4e1a\u52a1\u6536\u76ca<\/strong><\/p>\n\n\n\n<ol>\n<li><strong>\u7edf\u4e00\u7684 SQL<\/strong>\uff1a\u901a\u8fc7\u4e00\u5957 SQL \u6765\u8868\u8fbe\u6d41\u548c\u6279\u8ba1\u7b97\u4e24\u79cd\u573a\u666f\uff0c\u51cf\u5c11\u5f00\u53d1\u7ef4\u62a4\u5de5\u4f5c\u3002<\/li>\n\n\n\n<li><strong>\u590d\u7528 UDF<\/strong>\uff1a\u6d41\u5f0f\u548c\u6279\u5f0f\u8ba1\u7b97\u53ef\u4ee5\u5171\u7528\u4e00\u5957 UDF\u3002\u8fd9\u5bf9\u4e1a\u52a1\u6765\u8bf4\u662f\u6709\u79ef\u6781\u610f\u4e49\u7684\u3002<\/li>\n\n\n\n<li><strong>\u5f15\u64ce\u7edf\u4e00<\/strong>\uff1a\u5bf9\u4e8e\u4e1a\u52a1\u7684\u5b66\u4e60\u6210\u672c\u548c\u67b6\u6784\u7684\u7ef4\u62a4\u6210\u672c\u90fd\u4f1a\u964d\u4f4e\u5f88\u591a\u3002<\/li>\n\n\n\n<li><strong>\u4f18\u5316\u7edf\u4e00<\/strong>\uff1a\u5927\u90e8\u5206\u7684\u4f18\u5316\u90fd\u662f\u53ef\u4ee5\u540c\u65f6\u4f5c\u7528\u5728\u6d41\u5f0f\u548c\u6279\u5f0f\u8ba1\u7b97\u4e0a\uff0c\u6bd4\u5982\u5bf9 planner\u3001operator \u7684\u4f18\u5316\u6d41\u548c\u6279\u53ef\u4ee5\u5171\u4eab\u3002<\/li>\n<\/ol>\n\n\n\n<p><strong>\u56db\u3001\u672a\u6765\u5de5\u4f5c\u548c\u89c4\u5212<\/strong><\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><\/h3>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E4%BC%98%E5%8C%96_retract_%E6%94%BE%E5%A4%A7%E9%97%AE%E9%A2%98\"><\/span><strong>\u4f18\u5316 retract \u653e\u5927\u95ee\u9898<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/pic4.zhimg.com\/80\/v2-a1cd0efa30b4cbcf6737158018a0b7af_720w.webp\" alt=\"\"\/><\/figure>\n\n\n\n<p>\u4ec0\u4e48\u662f retract \u653e\u5927\uff1f<\/p>\n\n\n\n<p>\u4e0a\u56fe\u6709 4 \u5f20\u8868\uff0c\u7b2c\u4e00\u5f20\u8868\u8fdb\u884c\u53bb\u91cd\u64cd\u4f5c (Dedup)\uff0c\u4e4b\u540e\u5206\u522b\u548c\u53e6\u5916\u4e09\u5f20\u8868\u505a Join\u3002\u903b\u8f91\u6bd4\u8f83\u7b80\u5355\uff0c\u8868 A \u8f93\u5165(A1)\uff0c\u6700\u540e\u4ea7\u51fa (A1,B1,C1,D1) \u7684\u7ed3\u679c\u3002<\/p>\n\n\n\n<p>\u5f53\u8868 A \u8f93\u5165\u4e00\u4e2a A2\uff0c\u56e0\u4e3a Dedup \u7b97\u5b50\uff0c\u5bfc\u81f4\u6570\u636e\u9700\u8981\u53bb\u91cd\uff0c\u5219\u5411\u4e0b\u6e38\u53d1\u9001\u4e00\u4e2a\u64a4\u56de A1 \u7684\u64cd\u4f5c -(A1) \u548c\u4e00\u4e2a\u65b0\u589e A2 \u7684\u64cd\u4f5c +(A2)\u3002\u7b2c\u4e00\u4e2a Join \u7b97\u5b50\u6536\u5230 -(A1) \u540e\u4f1a\u5c06 -(A1) \u53d8\u6210 -(A1,B1) \u548c +(null,B1)(\u4e3a\u4e86\u4fdd\u6301\u5b83\u8ba4\u4e3a\u7684\u6b63\u786e\u8bed\u4e49) \u53d1\u9001\u5230\u4e0b\u6e38\u3002\u4e4b\u540e\u53c8\u6536\u5230\u4e86 +(A2) \uff0c\u5219\u53c8\u5411\u4e0b\u6e38\u53d1\u9001 -(null,B1) \u548c +(A2,B1) \u8fd9\u6837\u64cd\u4f5c\u5c31\u653e\u5927\u4e86\u4e24\u500d\u3002\u518d\u7ecf\u7531\u4e0b\u6e38\u7684\u7b97\u5b50\u64cd\u4f5c\u4f1a\u4e00\u76f4\u88ab\u653e\u5927\uff0c\u5230\u6700\u7ec8\u7684 sink \u8f93\u51fa\u53ef\u80fd\u4f1a\u88ab\u653e\u5927 1000 \u500d\u4e4b\u591a\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/pic2.zhimg.com\/80\/v2-7d0d5c98833f9a71ed09d32bc9990ebd_720w.webp\" alt=\"\"\/><\/figure>\n\n\n\n<p>\u5982\u4f55\u89e3\u51b3\uff1f<\/p>\n\n\n\n<p><br>\u5c06\u539f\u5148 retract \u7684\u4e24\u6761\u6570\u636e\u53d8\u6210\u4e00\u6761 changelog \u7684\u683c\u5f0f\u6570\u636e\uff0c\u5728\u7b97\u5b50\u4e4b\u95f4\u4f20\u9012\u3002\u7b97\u5b50\u63a5\u6536\u5230 changelog \u540e\u5904\u7406\u53d8\u66f4\uff0c\u7136\u540e\u4ec5\u4ec5\u5411\u4e0b\u6e38\u53d1\u9001\u4e00\u4e2a\u53d8\u66f4 changelog \u5373\u53ef\u3002<\/p>\n\n\n\n<p><strong>\u672a\u6765\u89c4\u5212<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/pic3.zhimg.com\/80\/v2-78615b27983192d142e446c9cefa99f6_720w.webp\" alt=\"\"\/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"1%E5%8A%9F%E8%83%BD%E4%BC%98%E5%8C%96\"><\/span><strong>1.\u529f\u80fd\u4f18\u5316<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<ul>\n<li>\u652f\u6301\u6240\u6709\u7c7b\u578b\u805a\u5408\u6307\u6807\u53d8\u66f4\u7684 checkpoint \u6062\u590d\u80fd\u529b<\/li>\n\n\n\n<li>window local-global<\/li>\n\n\n\n<li>\u4e8b\u4ef6\u65f6\u95f4\u7684 Fast Emit<\/li>\n\n\n\n<li>\u5e7f\u64ad\u7ef4\u8868<\/li>\n\n\n\n<li>\u66f4\u591a\u7b97\u5b50\u7684 Mini-Batch \u652f\u6301:\u7ef4\u8868\uff0cTopN\uff0cJoin \u7b49<\/li>\n\n\n\n<li>\u5168\u9762\u517c\u5bb9 Hive SQL \u8bed\u6cd5<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"2%E4%B8%9A%E5%8A%A1%E6%89%A9%E5%B1%95\"><\/span><strong>2.\u4e1a\u52a1\u6269\u5c55<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<ul>\n<li>\u8fdb\u4e00\u6b65\u63a8\u52a8\u6d41\u5f0f SQL \u8fbe\u5230 80%<\/li>\n\n\n\n<li>\u63a2\u7d22\u843d\u5730\u6d41\u6279\u4e00\u4f53\u4ea7\u54c1\u5f62\u6001<\/li>\n\n\n\n<li>\u63a8\u52a8\u5b9e\u65f6\u6570\u4ed3\u6807\u51c6\u5316<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>\u672c\u6587\u7531 Apache Flink Committer\uff0c\u5b57\u8282\u8df3\u52a8\u67b6\u6784\u7814\u53d1\u5de5\u7a0b\u5e08\u674e\u672c\u8d85\u5206\u4eab\uff0c\u4ee5\u56db\u4e2a\u7ae0\u8282\u6765&hellip; <a href=\"http:\/\/viplao.com\/index.php\/2023\/06\/22\/flink-sql-%e5%ad%97%e8%8a%82%e8%b7%b3%e5%8a%a8flink%e5%ae%9e%e8%b7%b5%e4%b8%8e%e4%bc%98%e5%8c%96\/\" class=\"more-link read-more\" rel=\"bookmark\">\u7ee7\u7eed\u9605\u8bfb <span class=\"screen-reader-text\">Flink SQL &#8211; \u5b57\u8282\u8df3\u52a8Flink\u5b9e\u8df5\u4e0e\u4f18\u5316<\/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":1179,"_links":{"self":[{"href":"http:\/\/viplao.com\/index.php\/wp-json\/wp\/v2\/posts\/2043"}],"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=2043"}],"version-history":[{"count":2,"href":"http:\/\/viplao.com\/index.php\/wp-json\/wp\/v2\/posts\/2043\/revisions"}],"predecessor-version":[{"id":2055,"href":"http:\/\/viplao.com\/index.php\/wp-json\/wp\/v2\/posts\/2043\/revisions\/2055"}],"wp:attachment":[{"href":"http:\/\/viplao.com\/index.php\/wp-json\/wp\/v2\/media?parent=2043"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/viplao.com\/index.php\/wp-json\/wp\/v2\/categories?post=2043"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/viplao.com\/index.php\/wp-json\/wp\/v2\/tags?post=2043"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}