{"id":12247,"date":"2022-07-05T02:55:29","date_gmt":"2022-07-05T02:55:29","guid":{"rendered":"https:\/\/www.taosdata.com\/?p=12247"},"modified":"2022-07-05T07:00:02","modified_gmt":"2022-07-05T07:00:02","slug":"%e6%af%ab%e7%a7%92%e7%ba%a7%e8%bf%94%e5%9b%9e%e6%95%b0%e6%8d%ae%ef%bc%8ctdengine-%e5%9c%a8%e5%a4%a7%e7%96%86%e8%bd%a6%e8%bd%bd%e6%99%ba%e8%83%bd%e9%a9%be%e9%a9%b6%e4%ba%91%e7%ab%af%e5%b9%b3%e5%8f%b0","status":"publish","type":"post","link":"https:\/\/www.taosdata.com\/tdengine-user-cases\/12247.html","title":{"rendered":"\u6beb\u79d2\u7ea7\u8fd4\u56de\u6570\u636e\uff0cTDengine \u5728\u5927\u7586\u8f66\u8f7d\u667a\u80fd\u9a7e\u9a76\u4e91\u7aef\u5e73\u53f0\u4e0a\u7684\u5e94\u7528"},"content":{"rendered":"\n<blockquote class=\"wp-block-quote\"><p><strong>\u5c0f&nbsp;T&nbsp;\u5bfc\u8bfb<\/strong>\uff1a\u4e3a\u4e86\u6ee1\u8db3\u667a\u80fd\u9a7e\u9a76\u4e1a\u52a1\u7684\u6570\u636e\u5904\u7406\u9700\u6c42\uff0c\u5927\u7586\u8f66\u8f7d\u8bd5\u56fe\u4ece\u591a\u5bb6\u6570\u636e\u5e93\u4e2d\u8fdb\u884c\u9009\u578b\u8c03\u7814\uff0c\u5e2e\u52a9\u667a\u80fd\u9a7e\u9a76\u4e1a\u52a1\u63d0\u5347\u5199\u5165\u67e5\u8be2\u6027\u80fd\u3001\u964d\u4f4e\u8fd0\u7ef4\u6210\u672c\u3002\u672c\u6587\u5c06\u5206\u4eab\u5927\u7586\u8f66\u8f7d\u5728\u6570\u636e\u5e93\u9009\u578b\u3001\u7cfb\u7edf\u642d\u5efa\u548c\u4e1a\u52a1\u8fc1\u79fb\u7b49\u65b9\u9762\u7684\u7ecf\u9a8c\u3002<\/p><\/blockquote>\n\n\n\n<p>\u6839\u636e\u56fd\u5bb6\u53d1\u6539\u59d4\u3001\u79d1\u6280\u90e8\u3001\u5de5\u4fe1\u90e8\u7b49 11 \u4e2a\u90e8\u95e8\u8054\u5408\u5370\u53d1\u7684\u300a\u667a\u80fd\u6c7d\u8f66\u521b\u65b0\u53d1\u5c55\u6218\u7565\u300b\uff0c\u5230 2025 \u5e74\uff0c\u4e2d\u56fd\u6807\u51c6\u667a\u80fd\u6c7d\u8f66\u7684\u6280\u672f\u521b\u65b0\u3001\u4ea7\u4e1a\u751f\u6001\u3001\u57fa\u7840\u8bbe\u65bd\u3001\u6cd5\u89c4\u6807\u51c6\u3001\u4ea7\u54c1\u76d1\u7ba1\u548c\u7f51\u7edc\u5b89\u5168\u4f53\u7cfb\u57fa\u672c\u5f62\u6210\u3002\u540c\u65f6\uff0c\u5b9e\u73b0\u6709\u6761\u4ef6\u667a\u80fd\u9a7e\u9a76\u7684\u667a\u80fd\u6c7d\u8f66\u8fbe\u5230\u89c4\u6a21\u5316\u751f\u4ea7\uff0c\u5b9e\u73b0\u9ad8\u5ea6\u667a\u80fd\u9a7e\u9a76\u7684\u667a\u80fd\u6c7d\u8f66\u5728\u7279\u5b9a\u73af\u5883\u4e0b\u5e02\u573a\u5316\u5e94\u7528\u3002\u76ee\u524d\uff0c\u968f\u7740\u6211\u56fd\u6b63\u5728\u79ef\u6781\u53d1\u5c55\u667a\u80fd\u7f51\u8054\u6c7d\u8f66\uff0c\u65e0\u4eba\u9a7e\u9a76\u6280\u672f\u8fdb\u4e00\u6b65\u63a8\u52a8\uff0c\u4e92\u8054\u7f51\u5de8\u5934\u4f01\u4e1a\u8fdb\u5165\u5e02\u573a\u3001\u52a0\u5927\u6295\u5165\u7814\u53d1\u6280\u672f\uff0c\u65e0\u4eba\u9a7e\u9a76\u5e02\u573a\u6b63\u5904\u4e8e\u5feb\u901f\u53d1\u5c55\u9636\u6bb5\u3002\u65e0\u4eba\u673a\u5934\u90e8\u4f01\u4e1a\u5927\u7586\u8f66\u8f7d\u4e5f\u5728\u53bb\u5e74 4 \u6708\u4efd\u5ba3\u5e03\u8fdb\u5165\u667a\u80fd\u9a7e\u9a76\u9886\u57df\u3002<\/p>\n\n\n\n<p>\u7531\u4e8e\u5f53\u524d\u7684\u667a\u80fd\u9a7e\u9a76\u4e1a\u52a1\u8fd8\u662f\u65b0\u7684\u4e1a\u52a1\u573a\u666f\uff0c\u6240\u4ee5\u5927\u7586\u8f66\u8f7d\u5728\u9009\u578b\u4e0a\u7684\u5386\u53f2\u8d1f\u62c5\u76f8\u5bf9\u8f83\u8f7b\u3002\u5728 Database \u9009\u578b\u8981\u6c42\u4e0a\uff0c\u4ece\u4e1a\u52a1\u9700\u6c42\u51fa\u53d1\uff0c\u4e3b\u8981\u805a\u7126\u5728\u4e24\u70b9\uff1a\u9996\u5148\uff0c\u7ed3\u5408\u5f53\u4e0b\u7684\u4e1a\u52a1\u573a\u666f\uff0c\u9700\u8981\u6ee1\u8db3\u5355\u53f0\u8f66\u8f86\u7684\u9ad8\u9891\u6d88\u606f\u4e0a\u62a5\u9891\u7387\uff1b\u5176\u6b21\uff0c\u652f\u6301\u5728\u6570\u636e\u91cf\u5927\u7684\u65f6\u5019\uff0c\u901a\u8fc7\u805a\u5408\u51fd\u6570\uff0c\u6216\u9009\u62e9\u51fd\u6570\u6765\u5feb\u901f\u7b5b\u9009\u51fa\u9700\u8981\u7684\u6570\u636e\u3002<\/p>\n\n\n\n<p>\u6b64\u5916\uff0c\u5bf9\u6570\u636e\u5e93\u8981\u6c42\u652f\u6301\u96c6\u7fa4\u90e8\u7f72\u7684\u540c\u65f6\uff0c\u4e5f\u8981\u6c42\u66f4\u4f4e\u7684\u67e5\u8be2\u8bed\u53e5\u7f16\u5199\u4e0a\u624b\u96be\u5ea6\uff1b\u800c\u4e14\u9700\u652f\u6301\u5355\u8868\u5343\u4e07\u91cf\u7ea7\uff0c\u5728\u6d77\u91cf\u6570\u636e\u5e76\u53d1\u573a\u666f\u4e0b\uff0c\u9700\u8981\u6709\u8f83\u9ad8\u7684\u7edf\u8ba1\u62a5\u8868\u80fd\u529b\u548c\u8f83\u597d\u7684\u67e5\u8be2 SQL \u6548\u7387\uff1b\u6700\u540e\u901a\u8fc7\u6570\u636e\u538b\u7f29\u3001\u8fd0\u7ef4\u6210\u672c\u548c\u5e76\u53d1\u80fd\u529b\u4e0a\u7684\u8003\u91cf\uff0c\u6700\u7ec8\u9009\u5b9a <a href=\"https:\/\/www.taosdata.com\/\" data-internallinksmanager029f6b8e52c=\"1\" title=\"TDengine\" target=\"_blank\" rel=\"noopener\">TDengine<\/a> \u6765\u5b58\u50a8\u6d77\u91cf\u6570\u636e\u3002<\/p>\n\n\n\n<p>\u7efc\u5408\u6765\u770b\uff0cTDengine \u6ee1\u8db3\u9700\u6c42\u7684\u4e3b\u8981\u539f\u56e0\u5982\u4e0b\uff1a<\/p>\n\n\n\n<ul><li>\u56fd\u4ea7\u3001\u5f00\u6e90\u7684<a href=\"https:\/\/www.taosdata.com\/\" data-internallinksmanager029f6b8e52c=\"2\" title=\"\u65f6\u5e8f\u6570\u636e\u5e93\" target=\"_blank\" rel=\"noopener\">\u65f6\u5e8f\u6570\u636e\u5e93<\/a>\uff08Time Series&nbsp;Database\uff09<\/li><li>\u5f00\u6e90\u7248\u652f\u6301\u5206\u5e03\u5f0f\u96c6\u7fa4\uff0c\u65b9\u4fbf\u6269\u5c55<\/li><li>\u5217\u5f0f\u5b58\u50a8\uff0c\u6570\u636e\u538b\u7f29\u6bd4\u7387\u9ad8\uff0c\u8bfb\u5199\u6027\u80fd\u4f18\u79c0<\/li><li>\u4e00\u4e2a\u8bbe\u5907\u4e00\u5f20\u8868\uff0c\u5bf9\u5e94\u6211\u4eec\u4e00\u4e2a\u8f66\u8f86\u4e00\u5f20\u8868\uff0c\u6a21\u578b\u5951\u5408<\/li><li>\u8d85\u7ea7\u8868\u5bf9\u4e8e\u5206\u7ec4\u805a\u5408\u67e5\u8be2\u7684\u5f3a\u5927\u652f\u6301\u80fd\u529b<\/li><\/ul>\n\n\n\n<h2><strong>\u200dTDengine&nbsp;\u5efa\u8868\u601d\u8def<\/strong><\/h2>\n\n\n\n<p>\u4f5c\u4e3a\u667a\u80fd\u9a7e\u9a76\u9886\u57df\u7684\u521b\u65b0\u8005\u4e4b\u4e00\uff0c\u5927\u7586\u8f66\u8f7d\u4e3a\u6c7d\u8f66\u4e3b\u673a\u5382\u63d0\u4f9b\u4e86\u8f6f\u786c\u4e00\u4f53\u7684\u667a\u80fd\u9a7e\u9a76\u89e3\u51b3\u65b9\u6848\u3002\u5176\u4e2d\uff0c\u8f66\u8f86\u4e91\u7aef\u5e73\u53f0\u8d1f\u8d23\u5bf9\u8f66\u8f86\u72b6\u6001\u4fe1\u606f\u8fdb\u884c\u76d1\u63a7\uff0c\u5177\u4f53\u5305\u62ec GPS\u3001\u901f\u5ea6\u3001\u8f6c\u901f\u3001\u91cc\u7a0b\u7b49\uff0c\u7ecf\u7531 MQTT \u6d41\u8f6c\u5230 TDengine \u5b58\u50a8\uff0c\u6ee1\u8db3\u8f66\u8f86\u5386\u53f2\u8f68\u8ff9\u56de\u653e\u548c\u8f66\u8f86\u5b9e\u65f6\u72b6\u6001\u76d1\u63a7\u3002<\/p>\n\n\n\n<p>\u8f66\u8f86\u6d88\u606f\u6837\u4f8b\u6570\u636e\u5c55\u793a\u5982\u4e0b\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>{\"message_id\": \"a78b6d9a\",\"device_key\": \"deviceKey2\",\"ts\": \"2022-03-01 15:01:59\",\"longitude\": 123.9795647512915,\"latitude\": 21.58338210717887,\"altitude\": 51.47800064086914,\"signal_strength\": 12,\"satellites_in_view\": 21,\"speed\": 72.798225,\"acceleration\": 12,\"rpm\":2190,\"gear\": \"D\",\"direction\": -91.32959,\"mileage\": 10020,\"ip\": \"10.1.2.3\",\"create_time\": \"2022-03-01 15:02:03\",}<\/code><\/pre>\n\n\n\n<p>\u843d\u811a\u5230\u5b9e\u9645\u4e1a\u52a1\u4e0a\uff0c\u6211\u4eec\u642d\u5efa\u7684\u8868\u7ed3\u6784\u5982\u4e0b\uff1a<img decoding=\"async\" src=\"blob:https:\/\/www.taosdata.com\/ed314f45-be17-44dd-afe0-8b17f2b642e1\" alt=\"\u56fe\u7247\" title=\"- TDengine Database \u65f6\u5e8f\u6570\u636e\u5e93\"><\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-full\"><img decoding=\"async\" loading=\"lazy\" width=\"595\" height=\"259\" src=\"https:\/\/www.taosdata.com\/wp-content\/uploads\/2022\/07\/dj1.png\" alt=\"TDengine Database\" class=\"wp-image-12249\" srcset=\"https:\/\/www.taosdata.com\/wp-content\/uploads\/2022\/07\/dj1.png 595w, https:\/\/www.taosdata.com\/wp-content\/uploads\/2022\/07\/dj1-300x131.png 300w\" sizes=\"(max-width: 595px) 100vw, 595px\" title=\"- TDengine Database \u65f6\u5e8f\u6570\u636e\u5e93\"><\/figure><\/div>\n\n\n\n<p>\u6211\u4eec\u843d\u5730\u4f7f\u7528\u7684\u662f TDengine 2.2.1.3 \u5355\u673a\u7248 \uff0c\u6309\u7167\u8f66\u8f86\u552f\u4e00\u7684\u6807\u8bc6 DeviceKey \u6765\u521b\u5efa\u5b50\u8868\uff0c\u5982 device_stat_$deviceKey\uff0c\u4e00\u4e2a\u8f66\u8f86\u7684\u72b6\u6001\u4fe1\u606f\u90fd\u5b58\u5728\u4e00\u5f20\u5b50\u8868\u4e2d\u3002mqtt_msg \u8d85\u7ea7\u8868\u4e5f\u662f\u4e00\u6837\u7684\u903b\u8f91\uff0c\u4e5f\u662f\u4ee5 DeviceKey \u6765\u521b\u5efa\u5b50\u8868\u3002<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-full\"><img decoding=\"async\" loading=\"lazy\" width=\"595\" height=\"435\" src=\"https:\/\/www.taosdata.com\/wp-content\/uploads\/2022\/07\/dj2.png\" alt=\"TDengine Database\" class=\"wp-image-12250\" srcset=\"https:\/\/www.taosdata.com\/wp-content\/uploads\/2022\/07\/dj2.png 595w, https:\/\/www.taosdata.com\/wp-content\/uploads\/2022\/07\/dj2-300x219.png 300w\" sizes=\"(max-width: 595px) 100vw, 595px\" title=\"- TDengine Database \u65f6\u5e8f\u6570\u636e\u5e93\"><\/figure><\/div>\n\n\n\n<h2><strong>\u67b6\u6784\u4e0e\u8fc1\u79fb<\/strong><\/h2>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-full\"><img decoding=\"async\" loading=\"lazy\" width=\"595\" height=\"547\" src=\"https:\/\/www.taosdata.com\/wp-content\/uploads\/2022\/07\/dj3.png\" alt=\"TDengine Database\" class=\"wp-image-12251\" srcset=\"https:\/\/www.taosdata.com\/wp-content\/uploads\/2022\/07\/dj3.png 595w, https:\/\/www.taosdata.com\/wp-content\/uploads\/2022\/07\/dj3-300x276.png 300w\" sizes=\"(max-width: 595px) 100vw, 595px\" title=\"- TDengine Database \u65f6\u5e8f\u6570\u636e\u5e93\"><\/figure><\/div>\n\n\n\n<p>\u9664\u4e86\u4e0a\u62a5\u7684 GPS\u3001\u901f\u5ea6\u7b49\uff0cApp \u7aef\u8fd8\u4f1a\u548c\u8f66\u8f86\/\u8bbe\u5907\u4e4b\u95f4\u8fdb\u884c\u5927\u91cf\u7684\u547d\u4ee4\u4ea4\u4e92\uff0c\u5982\u4e0b\u53d1\u8f66\u8f86\u6307\u4ee4\u64cd\u4f5c\uff0c\u8fd9\u4e9b\u6211\u4eec\u4e5f\u662f\u4f7f\u7528 TDengine \u6765\u8fdb\u884c\u5b58\u50a8\u548c\u94fe\u8def\u8ffd\u8e2a\u7684\u3002\u5177\u4f53\u5230\u94fe\u8def\u6d88\u606f\u8ffd\u8e2a\u7684\u4f7f\u7528\u4e0a\uff0c\u6211\u4eec\u4f1a\u5c06\u8bbe\u5907\u4e0e\u4e91\u7aef\u3001\u4e91\u7aef\u4e0e App \u4e4b\u95f4\u53cc\u5411\u901a\u4fe1\u7684 MQTT \u6d88\u606f\u8f6c\u53d1\u5230 Kafka \u6d88\u606f\u961f\u5217\u4e2d\uff0c\u7136\u540e\u4e1a\u52a1\u7cfb\u7edf\u8fdb\u884c\u6d88\u8d39\u89e3\u6790\uff0c\u5f97\u5230 TraceID\u3001\u6d88\u606f ID\u3001\u6d88\u606f\u7248\u672c\u3001\u6d88\u606f\u7c7b\u578b\u3001\u6d88\u606f\u65f6\u95f4\u6233\u3001\u6d88\u606f\u5185\u5bb9\u7b49\u4e0d\u540c\u5b57\u6bb5\u7684\u6570\u636e\uff0c\u7136\u540e\u5c06\u5176\u5199\u5165 TDengine \u7684 mqtt_msg \u8d85\u7ea7\u8868\u5f53\u4e2d\u3002<\/p>\n\n\n\n<p>\u9664\u4e86\u5199\u5165\u4ee5\u5916\uff0c\u6211\u4eec\u4e5f\u6709\u4e00\u5b9a\u91cf\u7684\u67e5\u8be2\u64cd\u4f5c\uff0c\u4f46\u662f\u6574\u4f53\u4e0a\u8fd8\u662f\u4ee5\u5199\u5165\u4e3a\u4e3b\uff0c\u76ee\u524d TDengine \u7684\u6027\u80fd\u5b8c\u5168\u53ef\u4ee5\u6ee1\u8db3\u6211\u4eec\u7684\u9700\u6c42\u3002\u4e0d\u8fc7\u6587\u672c\u7c7b\u7684\u68c0\u7d22\u5e76\u4e0d\u662f TDengine \u6700\u64c5\u957f\u7684\u573a\u666f\uff0c\u4e8e\u662f\u6211\u4eec\u63a5\u5165\u4e86 ES \u63d0\u4f9b\u90e8\u5206\u670d\u52a1\u3002<\/p>\n\n\n\n<p>\u7531\u4e8e\u662f\u9879\u76ee\u521d\u671f\uff0c\u76ee\u524d\u6211\u4eec\u6682\u65f6\u8fd8\u5728\u4f7f\u7528 TDengine \u548c MySQL \u53cc\u5199\u65b0\u6570\u636e\uff0c\u628a MySQL \u7684 SQL \u548c TDengine \u7684 SQL \u505a\u4e86\u6620\u5c04\u5173\u7cfb\uff0c\u4ece\u800c\u5b9e\u73b0\u5c06\u5386\u53f2\u6570\u636e\u4ee5\u65e5\u5fd7\u56de\u653e\u7684\u65b9\u5f0f\u8fc1\u79fb\u5230 TDengine \u4e2d\u53bb\u3002\u56e0\u6b64\uff0c\u76ee\u524d\u4e24\u4e2a\u5e93\u6682\u65f6\u53ef\u4ee5\u4e92\u4e3a\u5907\u4efd\uff0c\u540e\u9762\u7b49\u4e1a\u52a1\u5b8c\u5168\u8fc1\u79fb\u540e\uff0c\u6211\u4eec\u5c31\u53ef\u4ee5\u4f7f\u7528 TDengine \u7684\u96c6\u7fa4\u591a\u526f\u672c\u529f\u80fd\u6765\u5b8c\u6210\u6570\u636e\u5907\u4efd\u4e86\u3002<\/p>\n\n\n\n<p>\u6b64\u5916\uff0c\u6d9b\u601d\u6570\u636e\u7684\u5de5\u4f5c\u4eba\u5458\u4e5f\u63d0\u4f9b\u4e86\u53e6\u5916\u4e24\u79cd\u6570\u636e\u8fc1\u79fb\u65b9\u6848\u4f9b\u6211\u4eec\u53c2\u8003\uff1a\u4e00\u662f\u5229\u7528 csv \u6587\u4ef6\u7684\u5bfc\u51fa\u5bfc\u5165\u3002\u4e8c\u5219\u662f\u57fa\u4e8e\u4e00\u6b3e\u5f00\u6e90\u7684\u6570\u636e\u5e93\u8fc1\u79fb\u5de5\u5177 DataX\uff0c\u8be5\u5de5\u5177\u76ee\u524d\u5df2\u7ecf\u5b8c\u6210\u4e86\u5173\u7cfb\u578b\u6570\u636e\u5e93\uff08Relational Database\uff09\u5230 TDengine \u7684\u9002\u914d\uff0c\u5b9e\u73b0\u4e86 TDengineReader \u548c TDengineWriter \u4e24\u4e2a\u63d2\u4ef6\uff0c\u8fc1\u79fb\u65f6\u53ea\u8981\u505a\u597d\u76f8\u5e94\u7684 json \u6587\u4ef6\u914d\u7f6e\u5373\u53ef\u3002<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-full\"><img decoding=\"async\" loading=\"lazy\" width=\"595\" height=\"122\" src=\"https:\/\/www.taosdata.com\/wp-content\/uploads\/2022\/07\/dj4.png\" alt=\"TDengine Database\" class=\"wp-image-12252\" srcset=\"https:\/\/www.taosdata.com\/wp-content\/uploads\/2022\/07\/dj4.png 595w, https:\/\/www.taosdata.com\/wp-content\/uploads\/2022\/07\/dj4-300x62.png 300w\" sizes=\"(max-width: 595px) 100vw, 595px\" title=\"- TDengine Database \u65f6\u5e8f\u6570\u636e\u5e93\"><\/figure><\/div>\n\n\n\n<h2><strong>\u6027\u80fd\u5c55\u793a<\/strong><\/h2>\n\n\n\n<p>\u5728\u5e94\u7528 TDengine \u4e4b\u540e\uff0c\u8f66\u8f86\u7684\u5b9e\u65f6\u72b6\u6001\u67e5\u8be2\u53d8\u5f97\u5341\u5206\u7b80\u5355\uff0c\u5177\u4f53\u5c55\u793a\u5982\u4e0b\uff1a<\/p>\n\n\n\n<p><strong>1. \u67e5\u8be2\u5355\u4e2a\u8f66\u8f86\u7684\u4e0a\u62a5\u7684\u6700\u65b0\u4f4d\u7f6e\u72b6\u6001<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>select last_row(*) from device_stat_deJgTAEzInsZeGLM\\G;<\/code><\/pre>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-full\"><img decoding=\"async\" loading=\"lazy\" width=\"595\" height=\"304\" src=\"https:\/\/www.taosdata.com\/wp-content\/uploads\/2022\/07\/dj5.png\" alt=\"TDengine Database\" class=\"wp-image-12253\" srcset=\"https:\/\/www.taosdata.com\/wp-content\/uploads\/2022\/07\/dj5.png 595w, https:\/\/www.taosdata.com\/wp-content\/uploads\/2022\/07\/dj5-300x153.png 300w\" sizes=\"(max-width: 595px) 100vw, 595px\" title=\"- TDengine Database \u65f6\u5e8f\u6570\u636e\u5e93\"><\/figure><\/div>\n\n\n\n<p><img decoding=\"async\" src=\"blob:https:\/\/www.taosdata.com\/c4421c20-bdb7-446d-9d14-a5ba37ded4ed\" alt=\"\u56fe\u7247\" title=\"- TDengine Database \u65f6\u5e8f\u6570\u636e\u5e93\"><strong>2. \u591a\u4e2a\u8f66\u8f86\u7684\u6700\u65b0\u4f4d\u7f6e\u72b6\u6001\u67e5\u8be2<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>select last_row(*) from device_stat where device_key in ('mpVOGpaHqAxGiHWo','HEChzTCZeIWSUysB','HgsIdzvJPeFlVDuT','LVaPHOXkEeTGjTpm','PFHnQCkcXCIBnbsC') group by device_key;<\/code><\/pre>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-full\"><img decoding=\"async\" loading=\"lazy\" width=\"595\" height=\"263\" src=\"https:\/\/www.taosdata.com\/wp-content\/uploads\/2022\/07\/dj6.png\" alt=\"TDengine Database\" class=\"wp-image-12254\" srcset=\"https:\/\/www.taosdata.com\/wp-content\/uploads\/2022\/07\/dj6.png 595w, https:\/\/www.taosdata.com\/wp-content\/uploads\/2022\/07\/dj6-300x133.png 300w\" sizes=\"(max-width: 595px) 100vw, 595px\" title=\"- TDengine Database \u65f6\u5e8f\u6570\u636e\u5e93\"><\/figure><\/div>\n\n\n\n<p><img decoding=\"async\" src=\"blob:https:\/\/www.taosdata.com\/2cbad811-b720-40c3-a5ad-c6ebd7d18ce8\" alt=\"\u56fe\u7247\" title=\"- TDengine Database \u65f6\u5e8f\u6570\u636e\u5e93\"><strong>\u5bf9\u4e8e\u8f66\u8f86\u5386\u53f2\u65f6\u95f4\u533a\u95f4\u5185\u7684\u72b6\u6001\u67e5\u8be2\uff0c\u4e5f\u53ef\u4ee5\u6781\u5feb\u5730\u8fd4\u56de\u7ed3\u679c\uff0c\u7528\u4ee5\u8fdb\u884c\u524d\u7aef\u5206\u6790\u3002<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>select * from device_stat_mpVOGpaHqAxGiHWo where ts >'2022-03-17 00:00:00' and ts < '2022-03-18 00:00:00';<\/code><\/pre>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-full\"><img decoding=\"async\" loading=\"lazy\" width=\"595\" height=\"244\" src=\"https:\/\/www.taosdata.com\/wp-content\/uploads\/2022\/07\/dj7.png\" alt=\"TDengine Database\" class=\"wp-image-12255\" srcset=\"https:\/\/www.taosdata.com\/wp-content\/uploads\/2022\/07\/dj7.png 595w, https:\/\/www.taosdata.com\/wp-content\/uploads\/2022\/07\/dj7-300x123.png 300w\" sizes=\"(max-width: 595px) 100vw, 595px\" title=\"- TDengine Database \u65f6\u5e8f\u6570\u636e\u5e93\"><\/figure><\/div>\n\n\n\n<p><strong>3. \u8fdb\u884c MQTT \u6d88\u606f\u8ffd\u8e2a\u65f6\uff0c\u67e5\u8be2 MQTT Broker \u6536\u53d1\u7684\u6700\u65b0\u6d88\u606f<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>select last_row(*) from mqtt_msg\\G;<\/code><\/pre>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-full\"><img decoding=\"async\" loading=\"lazy\" width=\"595\" height=\"151\" src=\"https:\/\/www.taosdata.com\/wp-content\/uploads\/2022\/07\/dj8.png\" alt=\"TDengine Database\" class=\"wp-image-12256\" srcset=\"https:\/\/www.taosdata.com\/wp-content\/uploads\/2022\/07\/dj8.png 595w, https:\/\/www.taosdata.com\/wp-content\/uploads\/2022\/07\/dj8-300x76.png 300w\" sizes=\"(max-width: 595px) 100vw, 595px\" title=\"- TDengine Database \u65f6\u5e8f\u6570\u636e\u5e93\"><\/figure><\/div>\n\n\n\n<p><strong>4. \u6309\u7167 requestId \u8fdb\u884c\u6d88\u606f\u8ffd\u8e2a<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>select * from mqtt_msg where request_id = 'f90c46d4-22a3-4ab9-b50a-aad8b237fc57'\\G;<\/code><\/pre>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-full\"><img decoding=\"async\" loading=\"lazy\" width=\"595\" height=\"289\" src=\"https:\/\/www.taosdata.com\/wp-content\/uploads\/2022\/07\/dj9.png\" alt=\"TDengine Database\" class=\"wp-image-12257\" srcset=\"https:\/\/www.taosdata.com\/wp-content\/uploads\/2022\/07\/dj9.png 595w, https:\/\/www.taosdata.com\/wp-content\/uploads\/2022\/07\/dj9-300x146.png 300w\" sizes=\"(max-width: 595px) 100vw, 595px\" title=\"- TDengine Database \u65f6\u5e8f\u6570\u636e\u5e93\"><\/figure><\/div>\n\n\n\n<p><strong>5. \u65f6\u95f4\u533a\u95f4\u5185\u6d88\u606f\u67e5\u8be2<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>select * from mqtt_msg where ts >'2022-03-18 12:00:00' and ts < '2022-03-18 13:00:00';<\/code><\/pre>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-full\"><img decoding=\"async\" loading=\"lazy\" width=\"595\" height=\"243\" src=\"https:\/\/www.taosdata.com\/wp-content\/uploads\/2022\/07\/dj10.png\" alt=\"TDengine Database\" class=\"wp-image-12258\" srcset=\"https:\/\/www.taosdata.com\/wp-content\/uploads\/2022\/07\/dj10.png 595w, https:\/\/www.taosdata.com\/wp-content\/uploads\/2022\/07\/dj10-300x123.png 300w\" sizes=\"(max-width: 595px) 100vw, 595px\" title=\"- TDengine Database \u65f6\u5e8f\u6570\u636e\u5e93\"><\/figure><\/div>\n\n\n\n<p><img decoding=\"async\" src=\"blob:https:\/\/www.taosdata.com\/912e5a8f-318c-45c4-8834-b76d6ede756f\" alt=\"\u56fe\u7247\" title=\"- TDengine Database \u65f6\u5e8f\u6570\u636e\u5e93\"><strong>\u901a\u8fc7\u4ee5\u4e0a\u7684\u67e5\u8be2\u60c5\u51b5\u6c47\u603b\u53ef\u4ee5\u770b\u51fa\uff0cTDengine \u5b9e\u73b0\u4e86\u4e00\u4e9b\u9009\u62e9\u7279\u5b9a\u6570\u636e\u7684\u67e5\u8be2\u548c\u8f7b\u91cf\u7684\u67e5\u8be2\uff0c\u5168\u90e8\u90fd\u662f\u6beb\u79d2\u7ea7\u8fd4\u56de\u6570\u636e\uff0c\u5373\u4fbf\u662f 30000+ \u884c\u6570\u636e\u7684\u67e5\u8be2\uff0c\u6d88\u8017\u4e5f\u53ea\u5728 1.1 \u79d2\u5de6\u53f3\u3002<\/strong><\/p>\n\n\n\n<h2><strong>\u5199\u5728\u6700\u540e<\/strong><\/h2>\n\n\n\n<p>\u5728\u5f53\u524d\u7684\u4e91\u7aef\u5e73\u53f0\u4e2d\uff0cTDengine \u7684\u5e94\u7528\u4e0d\u4ec5\u8282\u7ea6\u4e86\u5b58\u50a8\u6210\u672c\u548c\u5f00\u53d1\u5b66\u4e60\u6210\u672c\uff0c\u540c\u65f6\u4e5f\u8868\u73b0\u51fa\u4e86\u5f88\u597d\u7684\u5199\u5165\u8bfb\u53d6\u6027\u80fd\uff0c\u6ee1\u8db3\u4e86\u667a\u80fd\u9a7e\u9a76\u4e91\u7aef\u5e73\u53f0\u6d77\u91cf\u65f6\u5e8f\u6570\u636e\u7684\u5904\u7406\u9700\u6c42\u3002<\/p>\n\n\n\n<p>\u672a\u6765\u6211\u4eec\u4f1a\u5bf9\u6d77\u91cf\u65f6\u7a7a\u6570\u636e\u7684\u5e94\u7528\u573a\u666f\u8fdb\u884c\u6301\u7eed\u63a2\u7d22\u548c\u6316\u6398\uff0c\u5bf9\u4e8e TDengine \u6211\u4eec\u4e5f\u6709\u66f4\u591a\u7684\u671f\u8bb8\uff0c\u5e0c\u671b\u5b83\u80fd\uff1a<\/p>\n\n\n\n<ul><li>\u5728\u7a7a\u95f4\u6570\u636e\u7684\u8bfb\u5199\u4e0a\u6709\u65b0\u7684\u7279\u6027\u548c\u66f4\u597d\u7684\u652f\u6301<\/li><li>\u62e5\u6709\u66f4\u52a0\u4e30\u5bcc\u7684\u8ba4\u8bc1\u6388\u6743\u673a\u5236\uff0c\u63d0\u4f9b\u66f4\u7ec6\u7c92\u5ea6\u7684\u6743\u9650\u7ba1\u63a7<\/li><li>\u7cfb\u7edf\u6027\u5730\u4e30\u5bcc\u5404\u7c7b\u65e5\u5fd7\uff0c\u534f\u52a9\u66f4\u5feb\u5730\u5b9a\u4f4d\u95ee\u9898<\/li><\/ul>\n\n\n\n<p>\u6700\u540e\uff0c\u795d\u613f TDengine \u8d8a\u6765\u8d8a\u597d\uff0c\u80fd\u591f\u5728\u4e2d\u56fd\u5e9e\u5927\u7684\u65f6\u5e8f\u6570\u636e\u5904\u7406\u573a\u666f\u4e2d\u8131\u9896\u800c\u51fa\uff0c\u6210\u4e3a\u56fd\u4ea7\u6570\u636e\u5e93\u4e2d\u7684\u7cbe\u54c1\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e3a\u4e86\u6ee1\u8db3\u667a\u80fd\u9a7e\u9a76\u4e1a\u52a1\u7684\u6570\u636e\u5904\u7406\u9700\u6c42\uff0c\u5927\u7586\u8f66\u8f7d\u8bd5\u56fe\u4ece\u591a\u5bb6\u6570\u636e\u5e93\u4e2d\u8fdb\u884c\u9009\u578b\u8c03\u7814\uff0c\u5e2e\u52a9\u667a\u80fd\u9a7e\u9a76\u4e1a\u52a1\u63d0\u5347\u5199\u5165\u67e5\u8be2\u6027\u80fd\u3001\u964d\u4f4e\u8fd0\u7ef4\u6210\u672c\u3002\u672c\u6587\u5c06\u5206\u4eab\u5927\u7586\u8f66\u8f7d\u5728\u6570\u636e\u5e93\u9009\u578b\u3001\u7cfb\u7edf\u642d\u5efa\u548c\u4e1a\u52a1\u8fc1\u79fb\u7b49\u65b9\u9762\u7684\u7ecf\u9a8c\u3002<\/p>\n","protected":false},"author":151,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[4,5,7],"tags":[94,43],"_links":{"self":[{"href":"https:\/\/www.taosdata.com\/wp-json\/wp\/v2\/posts\/12247"}],"collection":[{"href":"https:\/\/www.taosdata.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.taosdata.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.taosdata.com\/wp-json\/wp\/v2\/users\/151"}],"replies":[{"embeddable":true,"href":"https:\/\/www.taosdata.com\/wp-json\/wp\/v2\/comments?post=12247"}],"version-history":[{"count":0,"href":"https:\/\/www.taosdata.com\/wp-json\/wp\/v2\/posts\/12247\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.taosdata.com\/wp-json\/wp\/v2\/media?parent=12247"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.taosdata.com\/wp-json\/wp\/v2\/categories?post=12247"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.taosdata.com\/wp-json\/wp\/v2\/tags?post=12247"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}