{"id":47121,"date":"2023-02-03T11:20:29","date_gmt":"2023-06-18T00:25:23","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/%e5%b0%9d%e8%af%95%e4%bd%bf%e7%94%a8ksqldb%e4%bb%8e%e7%89%a9%e8%81%94%e7%bd%91%e6%95%b0%e6%8d%ae%e4%b8%ad%e8%af%86%e5%88%ab%e7%a6%bb%e7%ba%bf%e8%ae%be%e5%a4%87%e3%80%82\/"},"modified":"2024-04-29T12:54:32","modified_gmt":"2024-04-29T04:54:32","slug":"%e5%b0%9d%e8%af%95%e4%bd%bf%e7%94%a8ksqldb%e4%bb%8e%e7%89%a9%e8%81%94%e7%bd%91%e6%95%b0%e6%8d%ae%e4%b8%ad%e8%af%86%e5%88%ab%e7%a6%bb%e7%ba%bf%e8%ae%be%e5%a4%87%e3%80%82","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e5%b0%9d%e8%af%95%e4%bd%bf%e7%94%a8ksqldb%e4%bb%8e%e7%89%a9%e8%81%94%e7%bd%91%e6%95%b0%e6%8d%ae%e4%b8%ad%e8%af%86%e5%88%ab%e7%a6%bb%e7%ba%bf%e8%ae%be%e5%a4%87%e3%80%82\/","title":{"rendered":"\u5c1d\u8bd5\u4f7f\u7528ksqlDB\u4ece\u7269\u8054\u7f51\u6570\u636e\u4e2d\u8bc6\u522b\u79bb\u7ebf\u8bbe\u5907"},"content":{"rendered":"<h3>\u7b80\u8981\u6982\u62ec<\/h3>\n<p>\u8fd9\u6b21\u6211\u4eec\u5c1d\u8bd5\u4f7f\u7528ksqlDB\u6765\u6d4b\u8bd5IoT\u7684\u4e00\u4e2a\u5e94\u7528\u6848\u4f8b\u3002<\/p>\n<h3>\u8003\u8651\u5230IoT\u7684\u5e94\u7528\u60c5\u51b5\u4f5c\u4e3a\u4e00\u4e2a\u5f00\u59cb\u7684\u5951\u673a<\/h3>\n<p>\u6700\u8fd1\uff0cIoT\u548cAI\u7684\u4f7f\u7528\u6848\u4f8b\u5e76\u4e0d\u7a00\u5947\u3002\u7136\u800c\uff0c\u4e0d\u4e45\u524d\u6211\u4ece\u4e00\u4e2a\u5ba2\u6237\u90a3\u91cc\u542c\u8bf4\uff0c\u867d\u7136IoT\u7cfb\u7edf\u5f88\u65b9\u4fbf\uff0c\u4f46\u8fc7\u5ea6\u4f9d\u8d56IoT\u8bbe\u5907\u53ef\u80fd\u4f1a\u6709\u5371\u9669\u3002\u4ed4\u7ec6\u8be2\u95ee\u540e\u624d\u5f97\u77e5\uff0c\u8be5\u5ba2\u6237\u73b0\u573a\u7684\u6c14\u4f53\u4f20\u611f\u5668\u914d\u5907\u7684IoT\u8bbe\u5907\u51fa\u4e86\u95ee\u9898\uff08\u5e76\u975e\u5b8c\u5168\u635f\u574f\uff09\uff0c\u5982\u679c\u76f4\u63a5\u76f8\u4fe1\u8be5\u8bbe\u5907\u6536\u96c6\u5230\u7684\u6570\u636e\u5e76\u7528AI\/ML\u8fdb\u884c\u5904\u7406\uff0c\u53ef\u80fd\u4f1a\u5bfc\u81f4\u610f\u60f3\u4e0d\u5230\u7684\u9ebb\u70e6\u3002<\/p>\n<p>\u6211\u8bbe\u60f3\u4e86\u4e00\u4e2a\u7b80\u5355\u7684\u60c5\u51b5\u5e76\u5c1d\u8bd5\u4e86\u4e00\u4e0b\uff0c\u5982\u679c\u80fd\u591f\u901a\u8fc7\u542c\u5230\u8fd9\u4e9b\u5e76\u4f7f\u7528ksqlDB\u4eceIoT\u6570\u636e\u4e2d\u81ea\u52a8\u68c0\u6d4b\u5230\u8bbe\u5907\u662f\u5426\u79bb\u7ebf\u6216\u5904\u4e8e\u5f02\u5e38\u72b6\u6001\uff0c\u53ef\u80fd\u5bf9\u89e3\u51b3\u8fd9\u4e9b\u95ee\u9898\u6709\u4e00\u4e9b\u5e2e\u52a9\u3002<\/p>\n<h3>\u5173\u4e8e\u7269\u8054\u7f51\u7684\u7528\u4f8b<\/h3>\n<p>\u4e2d\u56fd\u7684\u539f\u751f\u8bed\u8a00\u5316\u7684\u7ffb\u8bd1\u5982\u4e0b\uff1a<\/p>\n<p>\u63d0\u53ca\u7269\u8054\u7f51\u65f6\uff0c\u5b83\u5e7f\u6cdb\u5e94\u7528\u4e8e\u8f66\u8f86\u3001\u5236\u9020\u8bbe\u5907\u548c\u667a\u80fd\u5bb6\u7535\u7b49\u9886\u57df\u3002\u5927\u90e8\u5206\u7531\u7269\u8054\u7f51\u8bbe\u5907\u4ea7\u751f\u7684\u6570\u636e\u901a\u5e38\u5728\u7279\u5b9a\u65f6\u95f4\u751f\u6210\u548c\u5904\u7406\uff0c\u6570\u636e\u91cf\u548c\u901f\u5ea6\u4e5f\u5e38\u5e38\u662f\u91cd\u8981\u7684\u56e0\u7d20\u3002\u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0c\u5f53\u6570\u636e\u4f20\u8f93\uff08\u5171\u4eab\uff09\u7684\u884c\u4e3a\u4e0e\u6b63\u5e38\u60c5\u51b5\u4e0d\u540c\u65f6\uff0c\u53ef\u80fd\u9700\u8981\u5224\u65ad\u662f\u5426\u9700\u8981\u8fdb\u884c\u8bbe\u5907\u7ef4\u62a4\u3002\u7269\u8054\u7f51\u8d44\u4ea7\u8ffd\u8e2a\u7cfb\u7edf\u7684\u91cd\u8981\u529f\u80fd\u4e4b\u4e00\u662f\u5e2e\u52a9\u8fdb\u884c\u8fd9\u79cd\u5224\u65ad\u3002<br \/>\n\u5728\u8fd9\u91cc\uff0c\u6211\u4eec\u7b80\u5355\u4ecb\u7ecd\u4f7f\u7528ksqlDB\u6765\u786e\u8ba4\u54ea\u4e9b\u8bbe\u5907\u7684\u6570\u636e\u4e0d\u80fd\u88ab\u83b7\u53d6\u7684\u65b9\u6cd5\u3002<\/p>\n<h3>\u4f7f\u7528ksqlDB<\/h3>\n<p>ksqlDB\u53ef\u4ee5\u76f4\u63a5\u4ece\u4e91\u7aef\u5e38\u89c1\u7684\u6570\u636e\u6e90\u548c\u7ec8\u7aef\u7cfb\u7edf\u4e2d\u5bfc\u5165\u548c\u5bfc\u51fa\u6570\u636e\u3002\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c\u6211\u4eec\u5c06\u4f7f\u7528ksqlDB\u7684INSERT INTO\u529f\u80fd\u6765\u6267\u884c\u4f7f\u7528\u6a21\u62df\u6570\u636e\u7684\u4ee3\u7801\u3002<br \/>\n\u4f5c\u4e3a\u7269\u8054\u7f51(IoT)\u7528\u4f8b\u7684\u4e00\u4e2a\u4f8b\u5b50\uff0c\u5f53\u6211\u4eec\u4ece\u8bbe\u5907\u4e2d\u83b7\u53d6\u6570\u636e\u65f6\uff0c\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u89c2\u5bdf\u662f\u5426\u6709\u5f02\u5e38\u6765\u5224\u65ad\u8bbe\u5907\u662f\u5426\u5b58\u5728\u6545\u969c\u7684\u5f81\u5146\uff0c\u6216\u8005\u662f\u5426\u53ef\u80fd\u6210\u4e3a\u7f51\u7edc\u653b\u51fb\u7684\u76ee\u6807\u7b49\u3002<\/p>\n<h3>\u521b\u5efa\u4e00\u4e2a\u6d41\u7a0b\uff1a\u6b65\u9aa41\uff1a\u521b\u5efaSTREAM\u3002<\/h3>\n<p>\u6267\u884c\u4ee5\u4e0b\u7684ksqlDB\u8bed\u6cd5\u3002<\/p>\n<pre class=\"post-pre\"><code>CREATE STREAM iot_telemetry<span class=\"o\">(<\/span> \r\n\u3000\u3000device_id INT, \r\n\u3000\u3000ts BIGINT \r\n<span class=\"o\">)<\/span> WITH <span class=\"o\">(<\/span> \r\n\u3000\u3000KAFKA_TOPIC <span class=\"o\">=<\/span> \u2018iot_telemetry\u2018, \u3000\u3000\u3000\u3000\r\n\u3000\u3000VALUE_FORMAT <span class=\"o\">=<\/span> <span class=\"s1\">'JSON\u2018, \u3000\r\n\u3000\u3000PARTITIONS = 6, \r\n\u3000\u3000TIMESTAMP = '<\/span>ts\u2019 \r\n<span class=\"o\">)<\/span><span class=\"p\">;<\/span>\r\n<\/code><\/pre>\n<h3>\u6b65\u9aa4\u4e8c\uff1a\u521b\u5efa\u89c6\u56fe<\/h3>\n<pre class=\"post-pre\"><code>CREATE TABLE iot_telemetry_lags WITH <span class=\"o\">(<\/span>KAFKA_TOPIC <span class=\"o\">=<\/span> <span class=\"s1\">'iot_telemetry_lags'<\/span><span class=\"o\">)<\/span> AS \r\nSELECT \r\n\u3000device_id, \r\n\u3000WINDOWEND - LATEST_BY_OFFSET<span class=\"o\">(<\/span>ts<span class=\"o\">)<\/span> as lag_ms, \u3000\r\n\u3000TIMESTAMPTOSTRING<span class=\"o\">(<\/span>WINDOWSTART, \u2018yyyy-MM-dd HH:mm:ss\u2019<span class=\"o\">)<\/span> as window_start, \u3000\r\n\u3000TIMESTAMPTOSTRING<span class=\"o\">(<\/span>WINDOWEND, <span class=\"s1\">'yyyy-MM-dd HH:mm:ss'<\/span><span class=\"o\">)<\/span> as window_end \r\nFROM iot_telemetry \r\nWINDOW TUMBLING <span class=\"o\">(<\/span>SIZE 120 SECONDS<span class=\"o\">)<\/span> \r\nGROUP BY device_id<span class=\"p\">;<\/span>\r\n<\/code><\/pre>\n<h3>\u6b65\u9aa4\u4e09\uff1a\u8f93\u5165\u6a21\u62df\u6570\u636e<\/h3>\n<p>\u5728\u8fd9\u91cc\uff0c\u6211\u4eec\u5c06\u4f7f\u7528ksqlDB\u6765\u6295\u5165\u6a21\u62df\u6570\u636e\u3002<\/p>\n<pre class=\"post-pre\"><code>INSERT INTO iot_telemetry <span class=\"o\">(<\/span>device_id, ts<span class=\"o\">)<\/span> VALUES <span class=\"o\">(<\/span>1, 1655144403000<span class=\"o\">)<\/span><span class=\"p\">;<\/span> \r\nINSERT INTO iot_telemetry <span class=\"o\">(<\/span>device_id, ts<span class=\"o\">)<\/span> VALUES <span class=\"o\">(<\/span>0, 1655144403000<span class=\"o\">)<\/span><span class=\"p\">;<\/span> \r\nINSERT INTO iot_telemetry <span class=\"o\">(<\/span>device_id, ts<span class=\"o\">)<\/span> VALUES <span class=\"o\">(<\/span>0, 1655144423000<span class=\"o\">)<\/span><span class=\"p\">;<\/span>\r\nINSERT INTO iot_telemetry <span class=\"o\">(<\/span>device_id, ts<span class=\"o\">)<\/span> VALUES <span class=\"o\">(<\/span>0, 1655144443000<span class=\"o\">)<\/span><span class=\"p\">;<\/span> \r\nINSERT INTO iot_telemetry <span class=\"o\">(<\/span>device_id, ts<span class=\"o\">)<\/span> VALUES <span class=\"o\">(<\/span>0, 1655144463000<span class=\"o\">)<\/span><span class=\"p\">;<\/span> \r\nINSERT INTO iot_telemetry <span class=\"o\">(<\/span>device_id, ts<span class=\"o\">)<\/span> VALUES <span class=\"o\">(<\/span>0, 1655144483000<span class=\"o\">)<\/span><span class=\"p\">;<\/span> \r\nINSERT INTO iot_telemetry <span class=\"o\">(<\/span>device_id, ts<span class=\"o\">)<\/span> VALUES <span class=\"o\">(<\/span>0, 1655144503000<span class=\"o\">)<\/span><span class=\"p\">;<\/span> \r\nINSERT INTO iot_telemetry <span class=\"o\">(<\/span>device_id, ts<span class=\"o\">)<\/span> VALUES <span class=\"o\">(<\/span>0, 1655144523000<span class=\"o\">)<\/span><span class=\"p\">;<\/span> \r\nINSERT INTO iot_telemetry <span class=\"o\">(<\/span>device_id, ts<span class=\"o\">)<\/span> VALUES <span class=\"o\">(<\/span>0, 1655144543000<span class=\"o\">)<\/span><span class=\"p\">;<\/span> \r\nINSERT INTO iot_telemetry <span class=\"o\">(<\/span>device_id, ts<span class=\"o\">)<\/span> VALUES <span class=\"o\">(<\/span>0, 1655144563000<span class=\"o\">)<\/span><span class=\"p\">;<\/span> \r\nINSERT INTO iot_telemetry <span class=\"o\">(<\/span>device_id, ts<span class=\"o\">)<\/span> VALUES <span class=\"o\">(<\/span>0, 1655144583000<span class=\"o\">)<\/span><span class=\"p\">;<\/span> \r\n<\/code><\/pre>\n<h3>\u6b65\u9aa4\u56db\uff1a\u786e\u8ba4<\/h3>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d7c9c913a08637a69ceef\/18-0.png\" alt=\"image.png\" \/><\/div>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d7c9c913a08637a69ceef\/19-0.png\" alt=\"image.png\" \/><\/div>\n<p>\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c\u6211\u4eec\u901a\u8fc7\u76d1\u63a7IoT\u8bbe\u5907\u5728\u4e00\u5b9a\u65f6\u95f4\u5185\u672a\u53d1\u9001\u9065\u6d4b\u6570\u636e\u7684\u60c5\u51b5\uff0c\u5e76\u5728\u8be5\u60c5\u51b5\u53d1\u751f\u65f6\uff08\u4f8b\u5982\uff0clag_ms\u7684\u503c\u8d85\u8fc760000\uff09\uff0c\u8f93\u51fa\u76f8\u5173\u7684\u6570\u636e\u3002\u901a\u8fc7\u975e\u5e38\u7b80\u5355\u7684SQL\u8bed\u6cd5\uff0c\u6211\u4eec\u53ef\u4ee5\u68c0\u67e5IoT\u8bbe\u5907\u7684\u72b6\u6001\u3002<\/p>\n<p>\u975e\u5e38\u611f\u8c22\u60a8\u8fd9\u6b21\u76f4\u5230\u6700\u540e\u9605\u8bfb\u5b8c\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u7b80\u8981\u6982\u62ec \u8fd9\u6b21\u6211\u4eec\u5c1d\u8bd5\u4f7f\u7528ksqlDB\u6765\u6d4b\u8bd5IoT\u7684\u4e00\u4e2a\u5e94\u7528\u6848\u4f8b\u3002 \u8003\u8651\u5230IoT\u7684\u5e94\u7528\u60c5\u51b5\u4f5c\u4e3a\u4e00\u4e2a\u5f00\u59cb\u7684\u5951\u673a  [&hellip;]<\/p>\n","protected":false},"author":8,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-47121","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>\u5c1d\u8bd5\u4f7f\u7528ksqlDB\u4ece\u7269\u8054\u7f51\u6570\u636e\u4e2d\u8bc6\u522b\u79bb\u7ebf\u8bbe\u5907 - Blog - Silicon Cloud<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.silicloud.com\/zh\/blog\/\u5c1d\u8bd5\u4f7f\u7528ksqldb\u4ece\u7269\u8054\u7f51\u6570\u636e\u4e2d\u8bc6\u522b\u79bb\u7ebf\u8bbe\u5907\u3002\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" 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