{"id":358,"date":"2019-07-08T14:39:58","date_gmt":"2019-07-08T14:39:58","guid":{"rendered":"http:\/\/www.taosdata.com.cn:88\/blog\/?p=358"},"modified":"2023-02-10T03:40:50","modified_gmt":"2023-02-10T03:40:50","slug":"tdengine%e5%9c%a8%e6%95%b0%e6%8e%a7%e6%9c%ba%e5%ba%8a%e7%9b%91%e6%8e%a7%e4%b8%ad%e7%9a%84%e5%ba%94%e7%94%a8","status":"publish","type":"post","link":"https:\/\/www.taosdata.com\/tdengine-user-cases\/358.html","title":{"rendered":"TDengine\u5728\u6570\u63a7\u673a\u5e8a\u76d1\u63a7\u4e2d\u7684\u5e94\u7528"},"content":{"rendered":"\n

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\u6280\u672f\u67b6\u6784\u53ca\u7279\u70b9<\/h2>\n\n\n\n

TDengine\u7684\u5f15\u5165\u4f7f\u5f97\u6570\u63a7\u673a\u5e8a\u7684\u76d1\u63a7\u7cfb\u7edf\u67b6\u6784\u53d8\u5f97\u6781\u5176\u7b80\u5355\u3002\u5e73\u53f0\u67b6\u6784\u5982\u4e0b\u56fe\u6240\u793a\uff1a<\/p>\n\n\n\n

\"TDengine
\u56fe 1. TDengine\u5728\u6570\u63a7\u673a\u5e8a\u76d1\u63a7\u5e73\u53f0\u4e2d\u7684\u5e94\u7528<\/figcaption><\/figure>\n\n\n\n

\u91c7\u96c6\u5668\u91c7\u96c6\u7684\u6570\u63a7\u673a\u5e8a\u7684\u76d1\u63a7\u6570\u636e\u6c47\u96c6\u5230MQTT Server\u4e0a\u3002\u968f\u540e\uff0c\u6570\u636e\u8f6e\u8be2\u6a21\u5757\u5b9a\u671f\u5faa\u73af\u4eceMQTT Server\u4e0a\u62c9\u53d6\u6570\u636e\uff0c\u5e76\u8f6c\u6362\u4e3aTDengine\u7406\u89e3\u7684SQL\u8bed\u53e5\u5199\u5165\u5f15\u64ce\u3002TDengine\u540e\u9762\u53ef\u63a5\u5165\u5404\u79cd\u5e94\u7528\u7a0b\u5e8f\uff0c\u5b9e\u65f6\u67e5\u8be2\u6700\u65b0\u6570\u636e\u3002\u5c11\u91cf\u7684TDengine\u7684\u914d\u7f6e\u4fe1\u606f\u7b49\u4e5f\u4f1a\u7ecf\u8fc7ETL\u6a21\u5757\u8f6c\u6362\u5199\u5165\u4e00\u4e2a\u5173\u7cfb\u578b\u6570\u636e\u5e93\uff08Relational Database\uff09\uff0c\u65b9\u4fbf\u5404\u4e2a\u5e94\u7528\u67e5\u8be2\u4f7f\u7528\u3002<\/p>\n\n\n\n

TDengine\u7684\u5f15\u5165\u4f7f\u5f97\u67b6\u6784\u53d8\u5f97\u6781\u5176\u7b80\u5355\u3002\u4e00\u65b9\u9762\uff0cTDengine\u672c\u8eab\u5e26\u6709\u7f13\u5b58\u529f\u80fd\uff0c\u4ece\u800c\u4f7f\u5f97\u5728\u5e94\u7528\u4e2d\u4e0d\u9700\u8981\u518d\u90e8\u7f72\u5176\u4ed6\u7684\u7f13\u5b58\u6570\u636e\u5e93\u6765\u7ef4\u6301\u6570\u636e\u7684\u9ad8\u53ef\u9760\u3002\u53e6\u4e00\u65b9\u9762\uff0cTDengine\u7684\u9ad8\u5e76\u53d1\u6027\u80fd\uff0c\u4f7f\u5f97TDengine\u5728\u5904\u7406\u9ad8\u9891\u7387\u7684\u5199\u5165\u4efb\u52a1\u7684\u540c\u65f6\uff0c\u53ef\u4ee5\u540c\u65f6\u62c9\u8d77\u6210\u767e\u4e0a\u5343\u7684\u67e5\u8be2\u3002\u800cTDengine\u7684\u5b9e\u65f6\u6027\u548c\u4f4e\u8d44\u6e90\u5360\u7528\u7684\u7279\u70b9\u4e5f\u4f7f\u5f97TDengine\u53ef\u4ee5\u5e76\u53d1\u652f\u6301\u5404\u79cd\u5b9e\u65f6\u8bf7\u6c42\u3002<\/p>\n\n\n\n

\u6570\u636e\u6a21\u578b\u4ecb\u7ecd\u53ca\u5199\u5165\u548c\u67e5\u8be2<\/h2>\n\n\n\n

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\u7531\u4e8e\u6570\u63a7\u673a\u5e8a\u91c7\u96c6\u6570\u636eschema\u7684\u76f8\u4f3c\u6027\uff0c\u5728\u5efa\u8868\u65f6\uff0c\u53ef\u4ee5\u91c7\u7528\u8d85\u7ea7\u8868<\/a>\u5efa\u8868\uff1a<\/p>\n\n\n\n

create table cnc_st (cnc_dqtime timestamp, \u2026.) tags (cnc_id binary(64));<\/pre>\n\n\n\n
\u7136\u540e\u5bf9\u4e8e\u6bcf\u53f0\u6570\u63a7\u673a\u5e8a\u521b\u5efa\u4e00\u5f20\u5355\u72ec\u7684\u8868\uff1a<\/p>\n\n\n\n
create table cnc_9293078 using cnc_st tags ('cnc_9293097');<\/pre>\n\n\n\n
\u5229\u7528\u8d85\u7ea7\u8868\u5efa\u8868\u6765\u5904\u7406\u6570\u63a7\u673a\u5e8a\u7684\u76d1\u63a7\u6709\u5f88\u5927\u7684\u4f18\u52bf\uff1a<\/p>\n\n\n\n
  1.  \u4e00\u65b9\u9762\uff0c\u8d85\u7ea7\u8868\u53ef\u4ee5\u770b\u6210\u662f\u5f88\u591a\u8868\u7684\u96c6\u5408\u3002\u5728\u5bf9\u591a\u8868\u8fdb\u884c\u67e5\u8be2\u65f6\uff0c\u53ef\u4ee5\u901a\u8fc7\u5bf9\u8d85\u7ea7\u8868\u7684\u67e5\u8be2\u5728\u4e00\u4e2aSQL\u8bed\u53e5\u4e2d\u5b8c\u6210\uff0c\u907f\u514d\u8fdb\u884c\u591a\u4e2aSQL\u8bed\u53e5\u7684\u67e5\u8be2\u3002<\/li>
  2. \u53e6\u4e00\u65b9\u9762\uff0c\u901a\u8fc7\u8d85\u7ea7\u8868\uff0c\u53ef\u4ee5\u5b9e\u73b0\u8868\u4e0e\u8868\u4e4b\u95f4\u6570\u636e\u7684\u805a\u5408\u3002 <\/li><\/ol>\n\n\n\n
    \u5728\u6570\u63a7\u673a\u5e8a\u7684\u76d1\u63a7\u4e2d\uff0c\u7ecf\u5e38\u9700\u8981\u8fdb\u884c\u67e5\u8be2\u7684\u662f\u5404\u673a\u5e8a\u6700\u65b0\u91c7\u96c6\u6570\u636e\u7684\u5c55\u793a\u548c\u5237\u65b0\u3002\u5728TDengine\u4e2d\uff0c\u8fd9\u4e2a\u53ef\u4ee5\u901a\u8fc7\u4e00\u6761SQL\u8bed\u53e5\u5f88\u5bb9\u6613\u5b9e\u73b0\uff1a<\/p>\n\n\n\n
    select last_row(*) from cnc_st group by tbname;<\/pre>\n\n\n\n
    \u5176\u4e2d\uff0ctbname<\/em>\u4e3a\u5173\u952e\u8868\u540d\u5173\u952e\u5b57\uff0c\u7528\u4ee5\u6309\u8868\u540d\u5bf9\u7ed3\u679c\u8fdb\u884c\u5206\u7ec4\u3002TDengine\u7684\u5e94\u7528\u5927\u5927\u7b80\u5316\u4e86\u6570\u636e\u5b9e\u65f6\u83b7\u53d6\u7684\u6d41\u7a0b\uff0c\u63d0\u9ad8\u4e86\u54cd\u5e94\u5ea6\u3002<\/p>\n\n\n\n
    \u5c0f\u7ed3<\/h2>\n\n\n\n
    \u4e0d\u540c\u4e8e\u5176\u4ed6\u7684\u5927\u6570\u636e\u5904\u7406\u7cfb\u7edf\uff0cTDengine\u90e8\u7f72\u6781\u5176\u65b9\u4fbf\u3002\u8fd9\u4f7f\u5f97\u5728\u642d\u5efa\u6570\u63a7\u673a\u5e8a\u76d1\u63a7\u5e73\u53f0\u7684\u8fc7\u7a0b\u4e2d\uff0c\u7528\u6237\u53ef\u4ee5\u82b1\u6781\u5c11\u7684\u65f6\u95f4\u5728\u6570\u636e\u5e93\u7cfb\u7edf\u7684\u642d\u5efa\u4e0a\uff0c\u5927\u5e45\u7f29\u77ed\u5de5\u7a0b\u5468\u671f\u3002\u53e6\u5916\uff0cTDengine\u7684\u9ad8\u6027\u80fd\u3001\u4f4e\u8d44\u6e90\u6d88\u8017\u3001\u5b9e\u65f6\u54cd\u5e94\u4ee5\u53ca\u9ad8\u5e76\u53d1\u7b49\u7279\u70b9\uff0c\u90fd\u4f7f\u5f97\u5b83\u5728\u4e00\u8fb9\u5199\u5165\u6570\u636e\u7684\u8fc7\u7a0b\u4e2d\uff0c\u53ef\u4ee5\u5b9e\u65f6\u670d\u52a1\u591a\u4e2a\u5e94\u7528\u7684\u8bf7\u6c42\u3002\u771f\u6b63\u505a\u5230\u5b9e\u65f6\u54cd\u5e94\uff0c\u5b9e\u65f6\u76d1\u63a7\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
    \u4e0d\u540c\u4e8e\u5176\u4ed6\u7684\u5927\u6570\u636e\u5904\u7406\u7cfb\u7edf\uff0cTDengine\u90e8\u7f72\u6781\u5176\u65b9\u4fbf\u3002\u8fd9\u4f7f\u5f97\u5728\u642d\u5efa\u6570\u63a7\u673a\u5e8a\u76d1\u63a7\u5e73\u53f0\u7684\u8fc7\u7a0b\u4e2d\uff0c\u7528\u6237\u53ef\u4ee5\u82b1\u6781\u5c11\u7684\u65f6\u95f4\u5728\u6570\u636e\u5e93\u7cfb\u7edf\u7684\u642d\u5efa\u4e0a\uff0c\u5927\u5e45\u7f29\u77ed\u5de5\u7a0b\u5468\u671f\u3002\u53e6\u5916\uff0cTDengine\u7684\u9ad8\u6027\u80fd\u3001\u4f4e\u8d44\u6e90\u6d88\u8017\u3001\u5b9e\u65f6\u54cd\u5e94\u4ee5\u53ca\u9ad8\u5e76\u53d1\u7b49\u7279\u70b9\uff0c\u90fd\u4f7f\u5f97\u5b83\u5728\u4e00\u8fb9\u5199\u5165\u6570\u636e\u7684\u8fc7\u7a0b\u4e2d\uff0c\u53ef\u4ee5\u5b9e\u65f6\u670d\u52a1\u591a\u4e2a\u5e94\u7528\u7684\u8bf7\u6c42\u3002\u771f\u6b63\u505a\u5230\u5b9e\u65f6\u54cd\u5e94\uff0c\u5b9e\u65f6\u76d1\u63a7\u3002<\/p>\n","protected":false},"author":5,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[4,5,3],"tags":[55],"_links":{"self":[{"href":"https:\/\/www.taosdata.com\/wp-json\/wp\/v2\/posts\/358"}],"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\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/www.taosdata.com\/wp-json\/wp\/v2\/comments?post=358"}],"version-history":[{"count":0,"href":"https:\/\/www.taosdata.com\/wp-json\/wp\/v2\/posts\/358\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.taosdata.com\/wp-json\/wp\/v2\/media?parent=358"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.taosdata.com\/wp-json\/wp\/v2\/categories?post=358"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.taosdata.com\/wp-json\/wp\/v2\/tags?post=358"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}