| <!DOCTYPE html> |
| <html lang="en-US"> |
| <head> |
| <meta charset="utf-8"> |
| <meta name="viewport" content="width=device-width,initial-scale=1"> |
| <title> </title> |
| <meta name="generator" content="VuePress 1.7.1"> |
| <link rel="icon" href="/favicon.ico"> |
| <meta name="description" content=" "> |
| <meta name="Description" content="Apache IoTDB: Time Series Database for IoT"> |
| <meta name="Keywords" content="TSDB, time series, time series database, IoTDB, IoT database, IoT data management,时序数据库, 时间序列管理, IoTDB, 物联网数据库, 实时数据库, 物联网数据管理, 物联网数据"> |
| <meta name="baidu-site-verification" content="wfKETzB3OT"> |
| <meta name="google-site-verification" content="mZWAoRY0yj_HAr-s47zHCGHzx5Ju-RVm5wDbPnwQYFo"> |
| |
| <link rel="preload" href="/assets/css/0.styles.679f71b6.css" as="style"><link rel="preload" href="/assets/js/app.a12b5307.js" as="script"><link rel="preload" href="/assets/js/3.49f0f20a.js" as="script"><link rel="preload" href="/assets/js/220.1fb41856.js" as="script"><link rel="prefetch" href="/assets/js/10.a9e4399a.js"><link rel="prefetch" href="/assets/js/100.4b5f6322.js"><link rel="prefetch" href="/assets/js/101.42aa5b0b.js"><link rel="prefetch" href="/assets/js/102.bfeec1ea.js"><link rel="prefetch" href="/assets/js/103.df833354.js"><link rel="prefetch" href="/assets/js/104.048c0f09.js"><link rel="prefetch" href="/assets/js/105.c452fad7.js"><link rel="prefetch" href="/assets/js/106.9224b929.js"><link rel="prefetch" href="/assets/js/107.73f1e6e7.js"><link rel="prefetch" href="/assets/js/108.00467fff.js"><link rel="prefetch" href="/assets/js/109.9f69cdc4.js"><link rel="prefetch" href="/assets/js/11.43ba1aca.js"><link rel="prefetch" href="/assets/js/110.78abf220.js"><link rel="prefetch" href="/assets/js/111.f004fa98.js"><link rel="prefetch" href="/assets/js/112.59735d56.js"><link rel="prefetch" href="/assets/js/113.ee4aacbc.js"><link rel="prefetch" href="/assets/js/114.7fa3a420.js"><link rel="prefetch" href="/assets/js/115.91dfcb8c.js"><link rel="prefetch" href="/assets/js/116.a5c73299.js"><link rel="prefetch" href="/assets/js/117.1bac72d6.js"><link rel="prefetch" href="/assets/js/118.f4277c6c.js"><link rel="prefetch" href="/assets/js/119.0c402f7d.js"><link rel="prefetch" href="/assets/js/12.af3ddb51.js"><link rel="prefetch" href="/assets/js/120.1c09fd00.js"><link rel="prefetch" href="/assets/js/121.90eb132d.js"><link rel="prefetch" href="/assets/js/122.b844327f.js"><link rel="prefetch" href="/assets/js/123.55abda20.js"><link rel="prefetch" href="/assets/js/124.d3c9f762.js"><link rel="prefetch" href="/assets/js/125.8476be66.js"><link rel="prefetch" href="/assets/js/126.2777f680.js"><link rel="prefetch" href="/assets/js/127.8cffacc2.js"><link rel="prefetch" href="/assets/js/128.f3c282b6.js"><link rel="prefetch" href="/assets/js/129.2aea930e.js"><link rel="prefetch" href="/assets/js/13.351ae2e3.js"><link rel="prefetch" href="/assets/js/130.fb57ea4d.js"><link rel="prefetch" href="/assets/js/131.0c6ee1c8.js"><link rel="prefetch" href="/assets/js/132.e22d327d.js"><link rel="prefetch" href="/assets/js/133.266018b0.js"><link rel="prefetch" href="/assets/js/134.15fb436c.js"><link rel="prefetch" href="/assets/js/135.e64131ed.js"><link rel="prefetch" href="/assets/js/136.42099e64.js"><link rel="prefetch" href="/assets/js/137.f874ca52.js"><link rel="prefetch" href="/assets/js/138.1fb71947.js"><link rel="prefetch" href="/assets/js/139.dc5711fc.js"><link rel="prefetch" href="/assets/js/14.1f820e1c.js"><link rel="prefetch" href="/assets/js/140.1b69fe74.js"><link rel="prefetch" href="/assets/js/141.46dfed23.js"><link rel="prefetch" href="/assets/js/142.ae452fb7.js"><link rel="prefetch" href="/assets/js/143.f7e83f27.js"><link rel="prefetch" href="/assets/js/144.8bad0645.js"><link rel="prefetch" href="/assets/js/145.00d3df1f.js"><link rel="prefetch" href="/assets/js/146.2cc9442a.js"><link rel="prefetch" href="/assets/js/147.0b488cbf.js"><link rel="prefetch" href="/assets/js/148.4e10cebd.js"><link rel="prefetch" href="/assets/js/149.d06c48d1.js"><link rel="prefetch" href="/assets/js/15.e2df8f28.js"><link rel="prefetch" href="/assets/js/150.e5bf8dc4.js"><link rel="prefetch" href="/assets/js/151.e6182d49.js"><link rel="prefetch" href="/assets/js/152.d1ca9877.js"><link rel="prefetch" href="/assets/js/153.2d9f0adc.js"><link rel="prefetch" href="/assets/js/154.a573c85a.js"><link rel="prefetch" href="/assets/js/155.7c7ecf29.js"><link rel="prefetch" href="/assets/js/156.62ee83e7.js"><link rel="prefetch" href="/assets/js/157.6669fb0c.js"><link rel="prefetch" href="/assets/js/158.cd096604.js"><link rel="prefetch" href="/assets/js/159.5e4dfdd7.js"><link rel="prefetch" href="/assets/js/16.9d83cb2c.js"><link rel="prefetch" href="/assets/js/160.f5cf2383.js"><link rel="prefetch" href="/assets/js/161.ca7e326f.js"><link rel="prefetch" href="/assets/js/162.4e479af2.js"><link rel="prefetch" href="/assets/js/163.cf62e1af.js"><link rel="prefetch" href="/assets/js/164.113484ca.js"><link rel="prefetch" href="/assets/js/165.1d2a7728.js"><link rel="prefetch" href="/assets/js/166.ec59b713.js"><link rel="prefetch" href="/assets/js/167.ac1b5d5d.js"><link rel="prefetch" href="/assets/js/168.f9d31ebb.js"><link rel="prefetch" href="/assets/js/169.afb45ad3.js"><link rel="prefetch" href="/assets/js/17.49e50ea2.js"><link rel="prefetch" href="/assets/js/170.71184a9e.js"><link rel="prefetch" href="/assets/js/171.42cd0c24.js"><link rel="prefetch" href="/assets/js/172.40343320.js"><link rel="prefetch" href="/assets/js/173.7fb3ac43.js"><link rel="prefetch" href="/assets/js/174.1d88db84.js"><link rel="prefetch" href="/assets/js/175.ec498db4.js"><link rel="prefetch" href="/assets/js/176.2470317b.js"><link rel="prefetch" href="/assets/js/177.e55600de.js"><link rel="prefetch" href="/assets/js/178.6a930da8.js"><link rel="prefetch" href="/assets/js/179.1b39fb7a.js"><link rel="prefetch" href="/assets/js/18.522bd806.js"><link rel="prefetch" href="/assets/js/180.69cdb354.js"><link rel="prefetch" href="/assets/js/181.5a28d2eb.js"><link rel="prefetch" href="/assets/js/182.d412e464.js"><link rel="prefetch" href="/assets/js/183.dafb377f.js"><link rel="prefetch" href="/assets/js/184.d4401418.js"><link rel="prefetch" href="/assets/js/185.65289f4c.js"><link rel="prefetch" href="/assets/js/186.ee6fc0b5.js"><link rel="prefetch" href="/assets/js/187.e0da8267.js"><link rel="prefetch" href="/assets/js/188.1bc563de.js"><link rel="prefetch" href="/assets/js/189.476347bd.js"><link rel="prefetch" href="/assets/js/19.cfbee5e5.js"><link rel="prefetch" href="/assets/js/190.9ce4e1d7.js"><link rel="prefetch" href="/assets/js/191.6ba979e7.js"><link rel="prefetch" href="/assets/js/192.e84c90e8.js"><link rel="prefetch" href="/assets/js/193.23a788b3.js"><link rel="prefetch" href="/assets/js/194.2cc1dd44.js"><link rel="prefetch" href="/assets/js/195.9ea38b07.js"><link rel="prefetch" href="/assets/js/196.5745ed39.js"><link rel="prefetch" href="/assets/js/197.57267595.js"><link rel="prefetch" href="/assets/js/198.a2857499.js"><link rel="prefetch" href="/assets/js/199.99d68945.js"><link rel="prefetch" href="/assets/js/20.4bdfbbe8.js"><link rel="prefetch" href="/assets/js/200.5c0f60ac.js"><link rel="prefetch" href="/assets/js/201.dc0c8c2b.js"><link rel="prefetch" href="/assets/js/202.23a01d12.js"><link rel="prefetch" href="/assets/js/203.bb31217f.js"><link rel="prefetch" href="/assets/js/204.17a33dc0.js"><link rel="prefetch" href="/assets/js/205.a15dd906.js"><link rel="prefetch" href="/assets/js/206.84f38d54.js"><link rel="prefetch" href="/assets/js/207.ad8df2fa.js"><link rel="prefetch" href="/assets/js/208.57df0491.js"><link rel="prefetch" href="/assets/js/209.9f1d553d.js"><link rel="prefetch" href="/assets/js/21.851eb8b7.js"><link rel="prefetch" href="/assets/js/210.f935b769.js"><link rel="prefetch" href="/assets/js/211.506467a2.js"><link rel="prefetch" href="/assets/js/212.58502315.js"><link rel="prefetch" href="/assets/js/213.de168e28.js"><link rel="prefetch" href="/assets/js/214.fdcca01d.js"><link rel="prefetch" href="/assets/js/215.7dceea98.js"><link rel="prefetch" href="/assets/js/216.6d4b93b5.js"><link rel="prefetch" href="/assets/js/217.9fcdec6d.js"><link rel="prefetch" href="/assets/js/218.c0d65c69.js"><link rel="prefetch" href="/assets/js/219.46602b01.js"><link rel="prefetch" href="/assets/js/22.ab7a2af8.js"><link rel="prefetch" href="/assets/js/221.b8e25f57.js"><link rel="prefetch" href="/assets/js/222.a346f7f6.js"><link rel="prefetch" href="/assets/js/223.75ed8115.js"><link rel="prefetch" href="/assets/js/224.69654b05.js"><link rel="prefetch" href="/assets/js/225.785764ce.js"><link rel="prefetch" href="/assets/js/226.537bd668.js"><link rel="prefetch" href="/assets/js/227.b838c577.js"><link rel="prefetch" href="/assets/js/228.8ed5da41.js"><link rel="prefetch" href="/assets/js/229.90bf4abc.js"><link rel="prefetch" href="/assets/js/23.88a22028.js"><link rel="prefetch" href="/assets/js/230.ed53603c.js"><link rel="prefetch" href="/assets/js/231.056674cd.js"><link rel="prefetch" href="/assets/js/232.7a19684c.js"><link rel="prefetch" href="/assets/js/233.537039d9.js"><link rel="prefetch" href="/assets/js/234.46196705.js"><link rel="prefetch" href="/assets/js/235.1b871a5b.js"><link rel="prefetch" href="/assets/js/236.7e237f16.js"><link rel="prefetch" href="/assets/js/237.6c633b04.js"><link rel="prefetch" href="/assets/js/238.0473bef9.js"><link rel="prefetch" href="/assets/js/239.6d32dc93.js"><link rel="prefetch" href="/assets/js/24.d23292bc.js"><link rel="prefetch" href="/assets/js/240.522a8746.js"><link rel="prefetch" href="/assets/js/241.6d6149e4.js"><link rel="prefetch" href="/assets/js/242.1217edbd.js"><link rel="prefetch" href="/assets/js/243.99da6819.js"><link rel="prefetch" href="/assets/js/244.7c4305a5.js"><link rel="prefetch" href="/assets/js/245.971feebe.js"><link rel="prefetch" href="/assets/js/246.89298634.js"><link rel="prefetch" href="/assets/js/247.605d7f5a.js"><link rel="prefetch" href="/assets/js/248.49a6c586.js"><link rel="prefetch" href="/assets/js/249.5167dd30.js"><link rel="prefetch" href="/assets/js/25.bc6a97e8.js"><link rel="prefetch" href="/assets/js/250.b238b8a3.js"><link rel="prefetch" href="/assets/js/251.9f562870.js"><link rel="prefetch" href="/assets/js/252.20b346f2.js"><link rel="prefetch" href="/assets/js/253.09cc69fd.js"><link rel="prefetch" href="/assets/js/254.a0a9e348.js"><link rel="prefetch" href="/assets/js/255.4cd0e8f1.js"><link rel="prefetch" href="/assets/js/256.5d033761.js"><link rel="prefetch" href="/assets/js/257.26160db0.js"><link rel="prefetch" href="/assets/js/258.93920bc8.js"><link rel="prefetch" href="/assets/js/259.5b840cc9.js"><link rel="prefetch" href="/assets/js/26.fbaaabfb.js"><link rel="prefetch" href="/assets/js/260.7d56b9c7.js"><link rel="prefetch" href="/assets/js/261.2be46719.js"><link rel="prefetch" href="/assets/js/262.8017ea9a.js"><link rel="prefetch" href="/assets/js/263.3151ff24.js"><link rel="prefetch" href="/assets/js/264.49aca677.js"><link rel="prefetch" href="/assets/js/265.bb90b170.js"><link rel="prefetch" href="/assets/js/266.55f4e29e.js"><link rel="prefetch" href="/assets/js/267.05c3ddec.js"><link rel="prefetch" href="/assets/js/268.453fe398.js"><link rel="prefetch" href="/assets/js/269.0a2935b6.js"><link rel="prefetch" href="/assets/js/27.0b57c820.js"><link rel="prefetch" href="/assets/js/270.c71ff59b.js"><link rel="prefetch" href="/assets/js/271.d28f5462.js"><link rel="prefetch" href="/assets/js/272.0f0a07d7.js"><link rel="prefetch" href="/assets/js/273.a8c5a865.js"><link rel="prefetch" href="/assets/js/274.3903673e.js"><link rel="prefetch" href="/assets/js/275.5a377690.js"><link rel="prefetch" href="/assets/js/276.a47bf30c.js"><link rel="prefetch" href="/assets/js/277.2c97f2c5.js"><link rel="prefetch" href="/assets/js/278.2f85f46c.js"><link rel="prefetch" href="/assets/js/279.4b1deb2e.js"><link rel="prefetch" href="/assets/js/28.902cf242.js"><link rel="prefetch" href="/assets/js/280.9af31918.js"><link rel="prefetch" href="/assets/js/281.b06cbabc.js"><link rel="prefetch" href="/assets/js/282.998c4254.js"><link rel="prefetch" href="/assets/js/283.65c16c23.js"><link rel="prefetch" href="/assets/js/284.88880c84.js"><link rel="prefetch" href="/assets/js/285.b14f9667.js"><link rel="prefetch" href="/assets/js/286.c3c3811e.js"><link rel="prefetch" href="/assets/js/287.47613b0c.js"><link rel="prefetch" href="/assets/js/288.5737dd0a.js"><link rel="prefetch" href="/assets/js/289.0bb3ac1c.js"><link rel="prefetch" href="/assets/js/29.8878a84b.js"><link rel="prefetch" href="/assets/js/290.d8bd9f13.js"><link rel="prefetch" href="/assets/js/291.d8da4ced.js"><link rel="prefetch" href="/assets/js/292.f22b2fc1.js"><link rel="prefetch" href="/assets/js/293.29a5f319.js"><link rel="prefetch" href="/assets/js/294.c24273e9.js"><link rel="prefetch" href="/assets/js/295.19032576.js"><link rel="prefetch" href="/assets/js/296.aede5c28.js"><link rel="prefetch" href="/assets/js/297.bcc6ae09.js"><link rel="prefetch" href="/assets/js/298.ae18a3c8.js"><link rel="prefetch" href="/assets/js/299.e643abb2.js"><link rel="prefetch" href="/assets/js/30.db844a98.js"><link rel="prefetch" href="/assets/js/300.0c3a88f8.js"><link rel="prefetch" href="/assets/js/301.cb0c4e3c.js"><link rel="prefetch" href="/assets/js/302.b9b5e0de.js"><link rel="prefetch" href="/assets/js/303.b2b08e58.js"><link rel="prefetch" href="/assets/js/304.6a8beaa0.js"><link rel="prefetch" href="/assets/js/305.d9b417c0.js"><link rel="prefetch" href="/assets/js/306.a176e286.js"><link rel="prefetch" href="/assets/js/307.4ca102ed.js"><link rel="prefetch" href="/assets/js/308.9d7acc5b.js"><link rel="prefetch" href="/assets/js/309.4bd88c45.js"><link rel="prefetch" href="/assets/js/31.726da8fb.js"><link rel="prefetch" href="/assets/js/310.8be7df64.js"><link rel="prefetch" href="/assets/js/311.d3d5d934.js"><link rel="prefetch" href="/assets/js/312.ea1f6a7f.js"><link rel="prefetch" href="/assets/js/313.bb4b6aca.js"><link rel="prefetch" href="/assets/js/314.1d1c4993.js"><link rel="prefetch" href="/assets/js/315.7c0d34c3.js"><link rel="prefetch" href="/assets/js/316.9e5c04ed.js"><link rel="prefetch" href="/assets/js/317.dc080175.js"><link rel="prefetch" href="/assets/js/318.a5eb57af.js"><link rel="prefetch" href="/assets/js/319.5f132fa7.js"><link rel="prefetch" href="/assets/js/32.bad93e79.js"><link rel="prefetch" href="/assets/js/320.d5dff770.js"><link rel="prefetch" href="/assets/js/321.1f402a86.js"><link rel="prefetch" href="/assets/js/322.d27214d8.js"><link rel="prefetch" href="/assets/js/323.3181e658.js"><link rel="prefetch" href="/assets/js/324.f395be90.js"><link rel="prefetch" href="/assets/js/325.90778fc6.js"><link rel="prefetch" href="/assets/js/326.9e5584da.js"><link rel="prefetch" href="/assets/js/327.f732b4a7.js"><link rel="prefetch" href="/assets/js/328.2462b58c.js"><link rel="prefetch" href="/assets/js/329.4517899a.js"><link rel="prefetch" href="/assets/js/33.00e7d6b5.js"><link rel="prefetch" href="/assets/js/330.fe63dd75.js"><link rel="prefetch" href="/assets/js/331.48c267b1.js"><link rel="prefetch" href="/assets/js/332.5f95316f.js"><link rel="prefetch" href="/assets/js/333.50357d27.js"><link rel="prefetch" href="/assets/js/334.ab9e3cfe.js"><link rel="prefetch" href="/assets/js/335.dd642cd4.js"><link rel="prefetch" href="/assets/js/336.0bbc8887.js"><link rel="prefetch" href="/assets/js/337.81529dc2.js"><link rel="prefetch" href="/assets/js/338.4089f17d.js"><link rel="prefetch" href="/assets/js/339.a1b8263d.js"><link rel="prefetch" href="/assets/js/34.44ac5494.js"><link rel="prefetch" href="/assets/js/340.6d1f6815.js"><link rel="prefetch" href="/assets/js/341.626acd05.js"><link rel="prefetch" href="/assets/js/342.557c9c35.js"><link rel="prefetch" href="/assets/js/343.a9c0b30c.js"><link rel="prefetch" href="/assets/js/344.dea6404e.js"><link rel="prefetch" href="/assets/js/345.b9dabeb8.js"><link rel="prefetch" href="/assets/js/346.ed03f1f5.js"><link rel="prefetch" href="/assets/js/347.6556794f.js"><link rel="prefetch" href="/assets/js/348.4886e7f3.js"><link rel="prefetch" href="/assets/js/349.c83494d9.js"><link rel="prefetch" href="/assets/js/35.7f32ce73.js"><link rel="prefetch" href="/assets/js/350.743c2c22.js"><link rel="prefetch" href="/assets/js/351.09f4b30e.js"><link rel="prefetch" href="/assets/js/352.25798214.js"><link rel="prefetch" href="/assets/js/353.26b227c3.js"><link rel="prefetch" href="/assets/js/354.f1e4a1e6.js"><link rel="prefetch" href="/assets/js/355.124b541f.js"><link rel="prefetch" href="/assets/js/356.0f8c88cc.js"><link rel="prefetch" href="/assets/js/357.94de66d9.js"><link rel="prefetch" href="/assets/js/358.9ec1f1c5.js"><link rel="prefetch" href="/assets/js/359.bceb8b18.js"><link rel="prefetch" href="/assets/js/36.d1e9d19f.js"><link rel="prefetch" href="/assets/js/360.90e3173d.js"><link rel="prefetch" href="/assets/js/361.6e5b94ba.js"><link rel="prefetch" href="/assets/js/362.13e70eac.js"><link rel="prefetch" href="/assets/js/363.f5e26cbd.js"><link rel="prefetch" href="/assets/js/364.ddeeadcb.js"><link rel="prefetch" href="/assets/js/365.7618548f.js"><link rel="prefetch" href="/assets/js/366.4c1f28a4.js"><link rel="prefetch" href="/assets/js/367.84c7b5cb.js"><link rel="prefetch" href="/assets/js/368.6ba68b87.js"><link rel="prefetch" href="/assets/js/369.ac394e0b.js"><link rel="prefetch" href="/assets/js/37.3351af87.js"><link rel="prefetch" href="/assets/js/370.ddf01dea.js"><link rel="prefetch" href="/assets/js/371.6e846e97.js"><link rel="prefetch" href="/assets/js/372.967bc3e0.js"><link rel="prefetch" href="/assets/js/373.d737a92d.js"><link rel="prefetch" href="/assets/js/374.cbf3648a.js"><link rel="prefetch" href="/assets/js/375.7d3c8252.js"><link rel="prefetch" href="/assets/js/376.0683cfdb.js"><link rel="prefetch" href="/assets/js/377.aaa95bcd.js"><link rel="prefetch" href="/assets/js/378.031f4c19.js"><link rel="prefetch" href="/assets/js/379.27d891cf.js"><link rel="prefetch" href="/assets/js/38.2334aea2.js"><link rel="prefetch" href="/assets/js/380.99d33fcb.js"><link rel="prefetch" href="/assets/js/381.cd4c8153.js"><link rel="prefetch" href="/assets/js/382.72973fb7.js"><link rel="prefetch" href="/assets/js/383.50468482.js"><link rel="prefetch" href="/assets/js/384.39179664.js"><link rel="prefetch" href="/assets/js/385.38fc09d3.js"><link rel="prefetch" href="/assets/js/386.f0785215.js"><link rel="prefetch" href="/assets/js/387.b11cd3b5.js"><link rel="prefetch" href="/assets/js/388.da5e7587.js"><link rel="prefetch" href="/assets/js/389.d70d34ac.js"><link rel="prefetch" href="/assets/js/39.683bc07a.js"><link rel="prefetch" href="/assets/js/390.d0e96c54.js"><link rel="prefetch" href="/assets/js/391.0de12f2c.js"><link rel="prefetch" href="/assets/js/392.43dea516.js"><link rel="prefetch" href="/assets/js/393.09fef64b.js"><link rel="prefetch" href="/assets/js/394.9238cc28.js"><link rel="prefetch" href="/assets/js/395.e45827ba.js"><link rel="prefetch" href="/assets/js/396.534abd81.js"><link rel="prefetch" href="/assets/js/397.e24dbd64.js"><link rel="prefetch" href="/assets/js/398.13484bba.js"><link rel="prefetch" href="/assets/js/399.76ec8e7c.js"><link rel="prefetch" href="/assets/js/4.06d2a3f5.js"><link rel="prefetch" href="/assets/js/40.829e9e65.js"><link rel="prefetch" href="/assets/js/400.06048cef.js"><link rel="prefetch" href="/assets/js/401.3aae5fae.js"><link rel="prefetch" href="/assets/js/402.11c5e2ca.js"><link rel="prefetch" href="/assets/js/403.23f6c085.js"><link rel="prefetch" href="/assets/js/404.eca12328.js"><link rel="prefetch" href="/assets/js/405.adf23f5b.js"><link rel="prefetch" href="/assets/js/406.0d95cbf4.js"><link rel="prefetch" href="/assets/js/407.c5c902cf.js"><link rel="prefetch" href="/assets/js/408.4e3789ec.js"><link rel="prefetch" href="/assets/js/409.c7fd46f6.js"><link rel="prefetch" href="/assets/js/41.ae8c3e94.js"><link rel="prefetch" href="/assets/js/410.5561837c.js"><link rel="prefetch" href="/assets/js/411.c8813216.js"><link rel="prefetch" href="/assets/js/412.3e422c85.js"><link rel="prefetch" href="/assets/js/413.72a1502a.js"><link rel="prefetch" href="/assets/js/414.812ba53a.js"><link rel="prefetch" href="/assets/js/415.699344c0.js"><link rel="prefetch" href="/assets/js/416.22028a1c.js"><link rel="prefetch" href="/assets/js/417.545238a2.js"><link rel="prefetch" href="/assets/js/418.ec3fa2c9.js"><link rel="prefetch" href="/assets/js/419.8252aa9a.js"><link rel="prefetch" href="/assets/js/42.45821720.js"><link rel="prefetch" href="/assets/js/420.7fd12e8f.js"><link rel="prefetch" href="/assets/js/421.034d8e57.js"><link rel="prefetch" href="/assets/js/422.58fd02e5.js"><link rel="prefetch" href="/assets/js/423.0efb5cca.js"><link rel="prefetch" href="/assets/js/424.cf690231.js"><link rel="prefetch" href="/assets/js/425.a8023769.js"><link rel="prefetch" href="/assets/js/426.f8544cb1.js"><link rel="prefetch" href="/assets/js/427.e7ae9d71.js"><link rel="prefetch" href="/assets/js/428.f5ca9583.js"><link rel="prefetch" href="/assets/js/429.55f35b32.js"><link rel="prefetch" href="/assets/js/43.bd27e7b5.js"><link rel="prefetch" href="/assets/js/430.653f9e38.js"><link rel="prefetch" href="/assets/js/431.bf6a087a.js"><link rel="prefetch" href="/assets/js/432.af707c18.js"><link rel="prefetch" href="/assets/js/433.a67268ba.js"><link rel="prefetch" href="/assets/js/434.7e3731d1.js"><link rel="prefetch" href="/assets/js/435.6082c268.js"><link rel="prefetch" href="/assets/js/436.67e746d2.js"><link rel="prefetch" href="/assets/js/437.72bc06d2.js"><link rel="prefetch" href="/assets/js/438.49f87916.js"><link rel="prefetch" href="/assets/js/439.40a41e1a.js"><link rel="prefetch" href="/assets/js/44.e0cd7e7b.js"><link rel="prefetch" href="/assets/js/440.71bb7390.js"><link rel="prefetch" href="/assets/js/441.e377be02.js"><link rel="prefetch" href="/assets/js/442.16738a41.js"><link rel="prefetch" href="/assets/js/443.ff133e10.js"><link rel="prefetch" href="/assets/js/444.b69ccc89.js"><link rel="prefetch" href="/assets/js/445.81d07e0e.js"><link rel="prefetch" href="/assets/js/446.c6c8be6f.js"><link rel="prefetch" href="/assets/js/447.00d171da.js"><link rel="prefetch" href="/assets/js/448.6fd3f02e.js"><link rel="prefetch" href="/assets/js/449.cb2c50b5.js"><link rel="prefetch" href="/assets/js/45.fa02a8c0.js"><link rel="prefetch" href="/assets/js/450.958bd0f9.js"><link rel="prefetch" href="/assets/js/451.92817c30.js"><link rel="prefetch" href="/assets/js/452.5a896c19.js"><link rel="prefetch" href="/assets/js/453.57aa9ce2.js"><link rel="prefetch" href="/assets/js/454.bf11ac3f.js"><link rel="prefetch" href="/assets/js/455.04eaff85.js"><link rel="prefetch" href="/assets/js/456.b2919005.js"><link rel="prefetch" href="/assets/js/457.80a3300a.js"><link rel="prefetch" href="/assets/js/458.a0ed6f4a.js"><link rel="prefetch" href="/assets/js/459.70eb98ab.js"><link rel="prefetch" href="/assets/js/46.cfcdcea2.js"><link rel="prefetch" href="/assets/js/460.beb14272.js"><link rel="prefetch" href="/assets/js/461.bda77b92.js"><link rel="prefetch" href="/assets/js/462.d1c99720.js"><link rel="prefetch" href="/assets/js/463.011dd91d.js"><link rel="prefetch" href="/assets/js/464.037d35a6.js"><link rel="prefetch" href="/assets/js/465.8149292a.js"><link rel="prefetch" href="/assets/js/466.f9f0f937.js"><link rel="prefetch" href="/assets/js/467.f4113a48.js"><link rel="prefetch" href="/assets/js/468.18747025.js"><link rel="prefetch" href="/assets/js/469.b88572d3.js"><link rel="prefetch" href="/assets/js/47.2c60b5b2.js"><link rel="prefetch" href="/assets/js/470.5641e542.js"><link rel="prefetch" href="/assets/js/471.ae0d276c.js"><link rel="prefetch" href="/assets/js/472.1ebbe04c.js"><link rel="prefetch" href="/assets/js/473.8bd95620.js"><link rel="prefetch" href="/assets/js/474.a43755e2.js"><link rel="prefetch" href="/assets/js/475.1e97fd02.js"><link rel="prefetch" href="/assets/js/476.ca714b38.js"><link rel="prefetch" href="/assets/js/477.40d0ba1b.js"><link rel="prefetch" href="/assets/js/478.870b1a14.js"><link rel="prefetch" href="/assets/js/479.88dbb260.js"><link rel="prefetch" href="/assets/js/48.d24599f6.js"><link rel="prefetch" href="/assets/js/480.f3da57b5.js"><link rel="prefetch" href="/assets/js/481.345d6800.js"><link rel="prefetch" href="/assets/js/482.0e0668ff.js"><link rel="prefetch" href="/assets/js/483.0e3bce82.js"><link rel="prefetch" href="/assets/js/484.b90c8dd7.js"><link rel="prefetch" href="/assets/js/485.3ced141b.js"><link rel="prefetch" href="/assets/js/486.1508e319.js"><link rel="prefetch" href="/assets/js/487.2d3eef4c.js"><link rel="prefetch" href="/assets/js/488.49e299f1.js"><link rel="prefetch" href="/assets/js/489.cfd34763.js"><link rel="prefetch" href="/assets/js/49.3de3d3a7.js"><link rel="prefetch" href="/assets/js/490.c305616d.js"><link rel="prefetch" href="/assets/js/491.da9e70ae.js"><link rel="prefetch" href="/assets/js/492.b577d653.js"><link rel="prefetch" href="/assets/js/493.611b89b4.js"><link rel="prefetch" href="/assets/js/494.13c23a99.js"><link rel="prefetch" href="/assets/js/495.c735e3d6.js"><link rel="prefetch" href="/assets/js/496.cd09fba2.js"><link rel="prefetch" href="/assets/js/497.85a8f8f8.js"><link rel="prefetch" href="/assets/js/498.2b430e88.js"><link rel="prefetch" href="/assets/js/499.c1b32b5c.js"><link rel="prefetch" href="/assets/js/5.33db7f08.js"><link rel="prefetch" href="/assets/js/50.27055b53.js"><link rel="prefetch" href="/assets/js/500.3ddf6370.js"><link rel="prefetch" href="/assets/js/501.41eb63d9.js"><link rel="prefetch" href="/assets/js/502.9d85d3d8.js"><link rel="prefetch" href="/assets/js/503.2d92d932.js"><link rel="prefetch" href="/assets/js/504.97aa8eef.js"><link rel="prefetch" href="/assets/js/505.cd9a95e5.js"><link rel="prefetch" href="/assets/js/506.fdd1dcde.js"><link rel="prefetch" href="/assets/js/507.239a1650.js"><link rel="prefetch" href="/assets/js/508.f360fdee.js"><link rel="prefetch" href="/assets/js/509.ee4d3700.js"><link rel="prefetch" href="/assets/js/51.08fc9992.js"><link rel="prefetch" href="/assets/js/510.386facae.js"><link rel="prefetch" href="/assets/js/511.596f52a3.js"><link rel="prefetch" href="/assets/js/512.65dc78dd.js"><link rel="prefetch" href="/assets/js/513.2764dbb1.js"><link rel="prefetch" href="/assets/js/514.d3ea373f.js"><link rel="prefetch" href="/assets/js/515.43dcaa87.js"><link rel="prefetch" href="/assets/js/516.71cffffc.js"><link rel="prefetch" href="/assets/js/517.75d2caec.js"><link rel="prefetch" href="/assets/js/518.69f9e4a4.js"><link rel="prefetch" href="/assets/js/519.803fd46d.js"><link rel="prefetch" href="/assets/js/52.f8b19e2e.js"><link rel="prefetch" href="/assets/js/520.c4253a4c.js"><link rel="prefetch" href="/assets/js/521.d42a7277.js"><link rel="prefetch" href="/assets/js/522.8d30661f.js"><link rel="prefetch" href="/assets/js/523.80a78c0e.js"><link rel="prefetch" href="/assets/js/524.262578ab.js"><link rel="prefetch" href="/assets/js/525.c30e8403.js"><link rel="prefetch" href="/assets/js/53.93b1709a.js"><link rel="prefetch" href="/assets/js/54.23834020.js"><link rel="prefetch" href="/assets/js/55.98bddbab.js"><link rel="prefetch" href="/assets/js/56.57798e09.js"><link rel="prefetch" href="/assets/js/57.6383ab3c.js"><link rel="prefetch" href="/assets/js/58.f93f9595.js"><link rel="prefetch" href="/assets/js/59.6515e2e2.js"><link rel="prefetch" href="/assets/js/6.d37d398a.js"><link rel="prefetch" href="/assets/js/60.5c3fe2a9.js"><link rel="prefetch" href="/assets/js/61.c44ac685.js"><link rel="prefetch" href="/assets/js/62.9b45e8f5.js"><link rel="prefetch" href="/assets/js/63.d2c91b1f.js"><link rel="prefetch" href="/assets/js/64.78c508ed.js"><link rel="prefetch" href="/assets/js/65.88e74e5c.js"><link rel="prefetch" href="/assets/js/66.b3dd78bb.js"><link rel="prefetch" href="/assets/js/67.7e97b055.js"><link rel="prefetch" href="/assets/js/68.7b4dda2f.js"><link rel="prefetch" href="/assets/js/69.23f5fd83.js"><link rel="prefetch" href="/assets/js/7.8c733af6.js"><link rel="prefetch" href="/assets/js/70.dbf8e7b4.js"><link rel="prefetch" href="/assets/js/71.0c9d3b74.js"><link rel="prefetch" href="/assets/js/72.b77a64bb.js"><link rel="prefetch" href="/assets/js/73.72f8ffdb.js"><link rel="prefetch" href="/assets/js/74.1f1823dc.js"><link rel="prefetch" href="/assets/js/75.2f5b0b73.js"><link rel="prefetch" href="/assets/js/76.6a415f61.js"><link rel="prefetch" href="/assets/js/77.2cde9b98.js"><link rel="prefetch" href="/assets/js/78.7d3229e6.js"><link rel="prefetch" href="/assets/js/79.994c527d.js"><link rel="prefetch" href="/assets/js/8.de26e4b6.js"><link rel="prefetch" href="/assets/js/80.82c6c4f9.js"><link rel="prefetch" href="/assets/js/81.336e70e1.js"><link rel="prefetch" href="/assets/js/82.65435ab6.js"><link rel="prefetch" href="/assets/js/83.a6794b4c.js"><link rel="prefetch" href="/assets/js/84.13db35cf.js"><link rel="prefetch" href="/assets/js/85.66678073.js"><link rel="prefetch" href="/assets/js/86.624df956.js"><link rel="prefetch" href="/assets/js/87.c6b315a7.js"><link rel="prefetch" href="/assets/js/88.d61bfb24.js"><link rel="prefetch" href="/assets/js/89.f3c224d1.js"><link rel="prefetch" href="/assets/js/9.fda181fa.js"><link rel="prefetch" href="/assets/js/90.25f57401.js"><link rel="prefetch" href="/assets/js/91.c9cdbdcb.js"><link rel="prefetch" href="/assets/js/92.bf0bf8a0.js"><link rel="prefetch" href="/assets/js/93.13b693fa.js"><link rel="prefetch" href="/assets/js/94.ad6b27ae.js"><link rel="prefetch" href="/assets/js/95.11940531.js"><link rel="prefetch" href="/assets/js/96.05e9812b.js"><link rel="prefetch" href="/assets/js/97.bf5a9c12.js"><link rel="prefetch" href="/assets/js/98.85310a3b.js"><link rel="prefetch" href="/assets/js/99.f1c645af.js"><link rel="prefetch" href="/assets/js/vendors~docsearch.262891fb.js"> |
| <link rel="stylesheet" href="/assets/css/0.styles.679f71b6.css"> |
| </head> |
| <body> |
| <div id="app" data-server-rendered="true"><div class="theme-container"><header class="navbar"><div class="sidebar-button"><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" role="img" viewBox="0 0 448 512" class="icon"><path fill="currentColor" d="M436 124H12c-6.627 0-12-5.373-12-12V80c0-6.627 5.373-12 12-12h424c6.627 0 12 5.373 12 12v32c0 6.627-5.373 12-12 12zm0 160H12c-6.627 0-12-5.373-12-12v-32c0-6.627 5.373-12 12-12h424c6.627 0 12 5.373 12 12v32c0 6.627-5.373 12-12 12zm0 160H12c-6.627 0-12-5.373-12-12v-32c0-6.627 5.373-12 12-12h424c6.627 0 12 5.373 12 12v32c0 6.627-5.373 12-12 12z"></path></svg></div> <a href="/" class="home-link router-link-active"><img src="/img/logo.png" alt=" " class="logo"></a> <div class="links"><div class="search-box"><input aria-label="Search" autocomplete="off" spellcheck="false" value=""> <!----></div> <nav class="nav-links can-hide"><div class="nav-item"><div class="dropdown-wrapper"><a class="dropdown-title"><span class="title">Document</span> <span class="arrow right"></span></a> <ul class="nav-dropdown" style="display:none;"><li class="dropdown-item"><!----> <a href="/UserGuide/Master/Get Started/QuickStart.html" class="nav-link">In progress</a></li><li class="dropdown-item"><!----> <a href="/UserGuide/V0.11.x/Get Started/QuickStart.html" class="nav-link">V0.11.x</a></li><li class="dropdown-item"><!----> <a href="/UserGuide/V0.10.x/Get Started/QuickStart.html" class="nav-link">V0.10.x</a></li><li class="dropdown-item"><!----> <a href="/UserGuide/V0.9.x/0-Get Started/1-QuickStart.html" class="nav-link">V0.9.x</a></li><li class="dropdown-item"><!----> <a href="/UserGuide/V0.8.x/0-Get Started/1-QuickStart.html" class="nav-link">V0.8.x</a></li></ul></div></div><div class="nav-item"><a href="/SystemDesign/Architecture/Architecture.html" class="nav-link">System design</a></div><div class="nav-item"><a href="/Download/" class="nav-link">Download</a></div><div class="nav-item"><div class="dropdown-wrapper"><a class="dropdown-title"><span class="title">Community</span> <span class="arrow right"></span></a> <ul class="nav-dropdown" style="display:none;"><li class="dropdown-item"><!----> <a href="https://cwiki.apache.org/confluence/display/iotdb" class="nav-link external"> |
| Wiki |
| <!----></a></li><li class="dropdown-item"><!----> <a href="/Community/Community-Project Committers.html" class="nav-link">People</a></li><li class="dropdown-item"><!----> <a href="/Community/Community-Powered By.html" class="nav-link">Powered By</a></li><li class="dropdown-item"><!----> <a href="/Community/Materials.html" class="nav-link">Resources</a></li><li class="dropdown-item"><!----> <a href="/Community/Feedback.html" class="nav-link">Feedback</a></li></ul></div></div><div class="nav-item"><div class="dropdown-wrapper"><a class="dropdown-title"><span class="title">Development</span> <span class="arrow right"></span></a> <ul class="nav-dropdown" style="display:none;"><li class="dropdown-item"><!----> <a href="/Development/VoteRelease.html" class="nav-link">How to vote</a></li><li class="dropdown-item"><!----> <a href="/Development/HowToCommit.html" class="nav-link">How to Commit</a></li><li class="dropdown-item"><!----> <a href="/Development/Committer.html" class="nav-link">Become a Committer</a></li><li class="dropdown-item"><!----> <a href="/Development/ContributeGuide.html" class="nav-link">ContributeGuide</a></li><li class="dropdown-item"><!----> <a href="/Development/format-changelist.html" class="nav-link">Changelist of TsFile</a></li><li class="dropdown-item"><!----> <a href="/Development/rpc-changelist.html" class="nav-link">Changelist of RPC</a></li></ul></div></div><div class="nav-item"><div class="dropdown-wrapper"><a class="dropdown-title"><span class="title">Blog</span> <span class="arrow right"></span></a> <ul class="nav-dropdown" style="display:none;"><li class="dropdown-item"><!----> <a href="/Blog/Index.html" class="nav-link">Overview</a></li><li class="dropdown-item"><!----> <a href="/Blog/Release0_93.html" class="nav-link">Some Notes on Release 0.9.3 and upcoming 0.10.0</a></li></ul></div></div><div class="nav-item"><div class="dropdown-wrapper"><a class="dropdown-title"><span class="title">ASF</span> <span class="arrow right"></span></a> <ul class="nav-dropdown" style="display:none;"><li class="dropdown-item"><!----> <a href="http://www.apache.org/" class="nav-link external"> |
| Foundation |
| <!----></a></li><li class="dropdown-item"><!----> <a href="http://www.apache.org/licenses/" class="nav-link external"> |
| License |
| <!----></a></li><li class="dropdown-item"><!----> <a href="http://www.apache.org/security/" class="nav-link external"> |
| Security |
| <!----></a></li><li class="dropdown-item"><!----> <a href="http://www.apache.org/foundation/sponsorship.html" class="nav-link external"> |
| Sponsorship |
| <!----></a></li><li class="dropdown-item"><!----> <a href="http://www.apache.org/foundation/thanks.html" class="nav-link external"> |
| Thanks |
| <!----></a></li><li class="dropdown-item"><!----> <a href="http://www.apache.org/events/current-event" class="nav-link external"> |
| Current Events |
| <!----></a></li></ul></div></div><div class="nav-item"><div class="dropdown-wrapper"><a class="dropdown-title"><span class="title">Languages</span> <span class="arrow right"></span></a> <ul class="nav-dropdown" style="display:none;"><li class="dropdown-item"><!----> <a href="/UserGuide/V0.8.x/5-IoTDB SQL Documentation/1-IoTDB Query Statement.html" class="nav-link">English</a></li><li class="dropdown-item"><!----> <a href="/zh/UserGuide/V0.8.x/5-IoTDB SQL Documentation/1-IoTDB Query Statement.html" class="nav-link">简体中文</a></li></ul></div></div> <a href="https://github.com/apache/iotdb.git" target="_blank" rel="noopener noreferrer" class="repo-link"> |
| gitHub |
| <span><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15" class="icon outbound"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path> <polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg> <span class="sr-only">(opens new window)</span></span></a></nav></div></header> <div class="sidebar-mask"></div> <aside class="sidebar"><nav class="nav-links"><div class="nav-item"><div class="dropdown-wrapper"><a class="dropdown-title"><span class="title">Document</span> <span class="arrow right"></span></a> <ul class="nav-dropdown" style="display:none;"><li class="dropdown-item"><!----> <a href="/UserGuide/Master/Get Started/QuickStart.html" class="nav-link">In progress</a></li><li class="dropdown-item"><!----> <a href="/UserGuide/V0.11.x/Get Started/QuickStart.html" class="nav-link">V0.11.x</a></li><li class="dropdown-item"><!----> <a href="/UserGuide/V0.10.x/Get Started/QuickStart.html" class="nav-link">V0.10.x</a></li><li class="dropdown-item"><!----> <a href="/UserGuide/V0.9.x/0-Get Started/1-QuickStart.html" class="nav-link">V0.9.x</a></li><li class="dropdown-item"><!----> <a href="/UserGuide/V0.8.x/0-Get Started/1-QuickStart.html" class="nav-link">V0.8.x</a></li></ul></div></div><div class="nav-item"><a href="/SystemDesign/Architecture/Architecture.html" class="nav-link">System design</a></div><div class="nav-item"><a href="/Download/" class="nav-link">Download</a></div><div class="nav-item"><div class="dropdown-wrapper"><a class="dropdown-title"><span class="title">Community</span> <span class="arrow right"></span></a> <ul class="nav-dropdown" style="display:none;"><li class="dropdown-item"><!----> <a href="https://cwiki.apache.org/confluence/display/iotdb" class="nav-link external"> |
| Wiki |
| <!----></a></li><li class="dropdown-item"><!----> <a href="/Community/Community-Project Committers.html" class="nav-link">People</a></li><li class="dropdown-item"><!----> <a href="/Community/Community-Powered By.html" class="nav-link">Powered By</a></li><li class="dropdown-item"><!----> <a href="/Community/Materials.html" class="nav-link">Resources</a></li><li class="dropdown-item"><!----> <a href="/Community/Feedback.html" class="nav-link">Feedback</a></li></ul></div></div><div class="nav-item"><div class="dropdown-wrapper"><a class="dropdown-title"><span class="title">Development</span> <span class="arrow right"></span></a> <ul class="nav-dropdown" style="display:none;"><li class="dropdown-item"><!----> <a href="/Development/VoteRelease.html" class="nav-link">How to vote</a></li><li class="dropdown-item"><!----> <a href="/Development/HowToCommit.html" class="nav-link">How to Commit</a></li><li class="dropdown-item"><!----> <a href="/Development/Committer.html" class="nav-link">Become a Committer</a></li><li class="dropdown-item"><!----> <a href="/Development/ContributeGuide.html" class="nav-link">ContributeGuide</a></li><li class="dropdown-item"><!----> <a href="/Development/format-changelist.html" class="nav-link">Changelist of TsFile</a></li><li class="dropdown-item"><!----> <a href="/Development/rpc-changelist.html" class="nav-link">Changelist of RPC</a></li></ul></div></div><div class="nav-item"><div class="dropdown-wrapper"><a class="dropdown-title"><span class="title">Blog</span> <span class="arrow right"></span></a> <ul class="nav-dropdown" style="display:none;"><li class="dropdown-item"><!----> <a href="/Blog/Index.html" class="nav-link">Overview</a></li><li class="dropdown-item"><!----> <a href="/Blog/Release0_93.html" class="nav-link">Some Notes on Release 0.9.3 and upcoming 0.10.0</a></li></ul></div></div><div class="nav-item"><div class="dropdown-wrapper"><a class="dropdown-title"><span class="title">ASF</span> <span class="arrow right"></span></a> <ul class="nav-dropdown" style="display:none;"><li class="dropdown-item"><!----> <a href="http://www.apache.org/" class="nav-link external"> |
| Foundation |
| <!----></a></li><li class="dropdown-item"><!----> <a href="http://www.apache.org/licenses/" class="nav-link external"> |
| License |
| <!----></a></li><li class="dropdown-item"><!----> <a href="http://www.apache.org/security/" class="nav-link external"> |
| Security |
| <!----></a></li><li class="dropdown-item"><!----> <a href="http://www.apache.org/foundation/sponsorship.html" class="nav-link external"> |
| Sponsorship |
| <!----></a></li><li class="dropdown-item"><!----> <a href="http://www.apache.org/foundation/thanks.html" class="nav-link external"> |
| Thanks |
| <!----></a></li><li class="dropdown-item"><!----> <a href="http://www.apache.org/events/current-event" class="nav-link external"> |
| Current Events |
| <!----></a></li></ul></div></div><div class="nav-item"><div class="dropdown-wrapper"><a class="dropdown-title"><span class="title">Languages</span> <span class="arrow right"></span></a> <ul class="nav-dropdown" style="display:none;"><li class="dropdown-item"><!----> <a href="/UserGuide/V0.8.x/5-IoTDB SQL Documentation/1-IoTDB Query Statement.html" class="nav-link">English</a></li><li class="dropdown-item"><!----> <a href="/zh/UserGuide/V0.8.x/5-IoTDB SQL Documentation/1-IoTDB Query Statement.html" class="nav-link">简体中文</a></li></ul></div></div> <a href="https://github.com/apache/iotdb.git" target="_blank" rel="noopener noreferrer" class="repo-link"> |
| gitHub |
| <span><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15" class="icon outbound"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path> <polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg> <span class="sr-only">(opens new window)</span></span></a></nav> <ul class="sidebar-links"><li><section class="sidebar-group depth-0"><p class="sidebar-heading"><span>IoTDB User Guide (V0.8.x)</span> <!----></p> <!----></section></li><li><section class="sidebar-group collapsable depth-0"><p class="sidebar-heading"><span>0-Get Started</span> <span class="arrow right"></span></p> <!----></section></li><li><section class="sidebar-group collapsable depth-0"><p class="sidebar-heading"><span>1-Overview</span> <span class="arrow right"></span></p> <!----></section></li><li><section class="sidebar-group collapsable depth-0"><p class="sidebar-heading"><span>2-Concept Key Concepts and Terminology</span> <span class="arrow right"></span></p> <!----></section></li><li><section class="sidebar-group collapsable depth-0"><p class="sidebar-heading"><span>3-Operation Manual</span> <span class="arrow right"></span></p> <!----></section></li><li><section class="sidebar-group collapsable depth-0"><p class="sidebar-heading"><span>4-Deployment and Management</span> <span class="arrow right"></span></p> <!----></section></li><li><section class="sidebar-group collapsable depth-0"><p class="sidebar-heading open"><span>5-IoTDB SQL Documentation</span> <span class="arrow down"></span></p> <ul class="sidebar-links sidebar-group-items"><li><a href="/UserGuide/V0.8.x/5-IoTDB SQL Documentation/1-IoTDB Query Statement.html" class="active sidebar-link">IoTDB Query Statement</a></li><li><a href="/UserGuide/V0.8.x/5-IoTDB SQL Documentation/2-Reference.html" class="sidebar-link">Reference</a></li></ul></section></li><li><section class="sidebar-group collapsable depth-0"><p class="sidebar-heading"><span>6-JDBC API</span> <span class="arrow right"></span></p> <!----></section></li><li><section class="sidebar-group collapsable depth-0"><p class="sidebar-heading"><span>7-TsFile</span> <span class="arrow right"></span></p> <!----></section></li><li><section class="sidebar-group collapsable depth-0"><p class="sidebar-heading"><span>8-System Tools</span> <span class="arrow right"></span></p> <!----></section></li></ul> </aside> <main class="page"> <div class="content content__default"><h1 id="iotdb-query-statement"><a href="#iotdb-query-statement" class="header-anchor">#</a> IoTDB Query Statement</h1> <p>In this part, we will introduce you IoTDB's Query Language. IoTDB offers you a SQL-like query language for interacting with IoTDB, the query language can be devided into 4 major parts:</p> <ul><li>Schema Statement: statements about schema management are all listed in this section.</li> <li>Data Management Statement: statements about data management (such as: data insertion, data query, etc.) are all listed in this section.</li> <li>Database Management Statement: statements about database management and authentication are all listed in this section.</li> <li>Functions: functions that IoTDB offers are all listed in this section.</li></ul> <p>All of these statements are write in IoTDB's own syntax, for details about the syntax composition, please check the <code>Reference</code> section.</p> <h2 id="schema-statement"><a href="#schema-statement" class="header-anchor">#</a> Schema Statement</h2> <ul><li>Set Storage Group</li></ul> <div class="language-SQL line-numbers-mode"><pre class="language-sql"><code><span class="token keyword">SET</span> STORAGE <span class="token keyword">GROUP</span> <span class="token keyword">TO</span> <span class="token operator"><</span>PrefixPath<span class="token operator">></span> |
| Eg: IoTDB <span class="token operator">></span> <span class="token keyword">SET</span> STORAGE <span class="token keyword">GROUP</span> <span class="token keyword">TO</span> root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span>wf01<span class="token punctuation">.</span>wt01 |
| Note: PrefixPath can <span class="token operator">not</span> include <span class="token punctuation">`</span><span class="token operator">*</span><span class="token punctuation">`</span> |
| </code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br><span class="line-number">2</span><br><span class="line-number">3</span><br></div></div><ul><li>Create Timeseries Statement</li></ul> <div class="language- line-numbers-mode"><pre class="language-text"><code>CREATE TIMESERIES <Timeseries> WITH <AttributeClauses> |
| AttributeClauses : DATATYPE=<DataTypeValue> COMMA ENCODING=<EncodingValue> [COMMA <ExtraAttributeClause>]* |
| DataTypeValue: BOOLEAN | DOUBLE | FLOAT | INT32 | INT64 | TEXT |
| EncodingValue: GORILLA | PLAIN | RLE | TS_2DIFF | REGULAR |
| ExtraAttributeClause: { |
| COMPRESSOR = <CompressorValue> |
| MAX_POINT_NUMBER = Integer |
| } |
| CompressorValue: UNCOMPRESSED | SNAPPY |
| Eg: IoTDB > CREATE TIMESERIES root.ln.wf01.wt01.status WITH DATATYPE=BOOLEAN, ENCODING=PLAIN |
| Eg: IoTDB > CREATE TIMESERIES root.ln.wf01.wt01.temperature WITH DATATYPE=FLOAT, ENCODING=RLE |
| Eg: IoTDB > CREATE TIMESERIES root.ln.wf01.wt01.temperature WITH DATATYPE=FLOAT, ENCODING=RLE, COMPRESSOR=SNAPPY, MAX_POINT_NUMBER=3 |
| Note: Datatype and encoding type must be corresponding. Please check Chapter 3 Encoding Section for details. |
| </code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br><span class="line-number">2</span><br><span class="line-number">3</span><br><span class="line-number">4</span><br><span class="line-number">5</span><br><span class="line-number">6</span><br><span class="line-number">7</span><br><span class="line-number">8</span><br><span class="line-number">9</span><br><span class="line-number">10</span><br><span class="line-number">11</span><br><span class="line-number">12</span><br><span class="line-number">13</span><br></div></div><ul><li>Delete Timeseries Statement</li></ul> <div class="language- line-numbers-mode"><pre class="language-text"><code>DELETE TIMESERIES <PrefixPath> [COMMA <PrefixPath>]* |
| Eg: IoTDB > DELETE TIMESERIES root.ln.wf01.wt01.status |
| Eg: IoTDB > DELETE TIMESERIES root.ln.wf01.wt01.status, root.ln.wf01.wt01.temperature |
| Eg: IoTDB > DELETE TIMESERIES root.ln.wf01.wt01.* |
| </code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br><span class="line-number">2</span><br><span class="line-number">3</span><br><span class="line-number">4</span><br></div></div><ul><li>Show All Timeseries Statement</li></ul> <div class="language- line-numbers-mode"><pre class="language-text"><code>SHOW TIMESERIES |
| Eg: IoTDB > SHOW TIMESERIES |
| Note: This statement can only be used in IoTDB Client. If you need to show all timeseries in JDBC, please use `DataBaseMetadata` interface. |
| </code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br><span class="line-number">2</span><br><span class="line-number">3</span><br></div></div><ul><li>Show Specific Timeseries Statement</li></ul> <div class="language- line-numbers-mode"><pre class="language-text"><code>SHOW TIMESERIES <Path> |
| Eg: IoTDB > SHOW TIMESERIES root |
| Eg: IoTDB > SHOW TIMESERIES root.ln |
| Eg: IoTDB > SHOW TIMESERIES root.ln.*.*.status |
| Eg: IoTDB > SHOW TIMESERIES root.ln.wf01.wt01.status |
| Note: The path can be prefix path, star path or timeseries path |
| Note: This statement can be used in IoTDB Client and JDBC. |
| </code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br><span class="line-number">2</span><br><span class="line-number">3</span><br><span class="line-number">4</span><br><span class="line-number">5</span><br><span class="line-number">6</span><br><span class="line-number">7</span><br></div></div><ul><li>Show Storage Group Statement</li></ul> <div class="language- line-numbers-mode"><pre class="language-text"><code>SHOW STORAGE GROUP |
| Eg: IoTDB > SHOW STORAGE GROUP |
| Note: This statement can be used in IoTDB Client and JDBC. |
| </code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br><span class="line-number">2</span><br><span class="line-number">3</span><br></div></div><h2 id="data-management-statement"><a href="#data-management-statement" class="header-anchor">#</a> Data Management Statement</h2> <ul><li>Insert Record Statement</li></ul> <div class="language- line-numbers-mode"><pre class="language-text"><code>INSERT INTO <PrefixPath> LPAREN TIMESTAMP COMMA <Sensor> [COMMA <Sensor>]* RPAREN VALUES LPAREN <TimeValue>, <PointValue> [COMMA <PointValue>]* RPAREN |
| Sensor : Identifier |
| Eg: IoTDB > INSERT INTO root.ln.wf01.wt01(timestamp,status) values(1509465600000,true) |
| Eg: IoTDB > INSERT INTO root.ln.wf01.wt01(timestamp,status) VALUES(NOW(), false) |
| Eg: IoTDB > INSERT INTO root.ln.wf01.wt01(timestamp,temperature) VALUES(2017-11-01T00:17:00.000+08:00,24.22028) |
| Eg: IoTDB > INSERT INTO root.ln.wf01.wt01(timestamp, status, temperature) VALUES (1509466680000, false, 20.060787); |
| Note: the statement needs to satisfy this constraint: <PrefixPath> + <Path> = <Timeseries> |
| Note: The order of Sensor and PointValue need one-to-one correspondence |
| </code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br><span class="line-number">2</span><br><span class="line-number">3</span><br><span class="line-number">4</span><br><span class="line-number">5</span><br><span class="line-number">6</span><br><span class="line-number">7</span><br><span class="line-number">8</span><br></div></div><ul><li>Update Record Statement</li></ul> <div class="language- line-numbers-mode"><pre class="language-text"><code>UPDATE <UpdateClause> SET <SetClause> WHERE <WhereClause> |
| UpdateClause: <prefixPath> |
| SetClause: <SetExpression> |
| SetExpression: <Path> EQUAL <PointValue> |
| WhereClause : <Condition> [(AND | OR) <Condition>]* |
| Condition : <Expression> [(AND | OR) <Expression>]* |
| Expression : [NOT | !]? TIME PrecedenceEqualOperator <TimeValue> |
| Eg: IoTDB > UPDATE root.ln.wf01.wt01 SET temperature = 23 WHERE time < NOW() and time > 2017-11-1T00:15:00+08:00 |
| Note: the statement needs to satisfy this constraint: <PrefixPath> + <Path> = <Timeseries> |
| </code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br><span class="line-number">2</span><br><span class="line-number">3</span><br><span class="line-number">4</span><br><span class="line-number">5</span><br><span class="line-number">6</span><br><span class="line-number">7</span><br><span class="line-number">8</span><br><span class="line-number">9</span><br></div></div><ul><li>Delete Record Statement</li></ul> <div class="language- line-numbers-mode"><pre class="language-text"><code>DELETE FROM <PrefixPath> [COMMA <PrefixPath>]* WHERE TIME LESSTHAN <TimeValue> |
| Eg: DELETE FROM root.ln.wf01.wt01.temperature WHERE time < 2017-11-1T00:05:00+08:00 |
| Eg: DELETE FROM root.ln.wf01.wt01.status, root.ln.wf01.wt01.temperature WHERE time < NOW() |
| Eg: DELETE FROM root.ln.wf01.wt01.* WHERE time < 1509466140000 |
| </code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br><span class="line-number">2</span><br><span class="line-number">3</span><br><span class="line-number">4</span><br></div></div><ul><li>Select Record Statement</li></ul> <div class="language- line-numbers-mode"><pre class="language-text"><code>SELECT <SelectClause> FROM <FromClause> [WHERE <WhereClause>]? |
| SelectClause : <SelectPath> (COMMA <SelectPath>)* |
| SelectPath : <FUNCTION> LPAREN <Path> RPAREN | <Path> |
| FUNCTION : ‘COUNT’ , ‘MIN_TIME’, ‘MAX_TIME’, ‘MIN_VALUE’, ‘MAX_VALUE’ |
| FromClause : <PrefixPath> (COMMA <PrefixPath>)? |
| WhereClause : <Condition> [(AND | OR) <Condition>]* |
| Condition : <Expression> [(AND | OR) <Expression>]* |
| Expression : [NOT | !]? <TimeExpr> | [NOT | !]? <SensorExpr> |
| TimeExpr : TIME PrecedenceEqualOperator <TimeValue> |
| SensorExpr : (<Timeseries> | <Path>) PrecedenceEqualOperator <PointValue> |
| Eg: IoTDB > SELECT status, temperature FROM root.ln.wf01.wt01 WHERE temperature < 24 and time > 2017-11-1 0:13:00 |
| Eg. IoTDB > SELECT * FROM root |
| Eg. IoTDB > SELECT COUNT(temperature) FROM root.ln.wf01.wt01 WHERE root.ln.wf01.wt01.temperature < 25 |
| Eg. IoTDB > SELECT MIN_TIME(temperature) FROM root.ln.wf01.wt01 WHERE root.ln.wf01.wt01.temperature < 25 |
| Eg. IoTDB > SELECT MAX_TIME(temperature) FROM root.ln.wf01.wt01 WHERE root.ln.wf01.wt01.temperature > 24 |
| Eg. IoTDB > SELECT MIN_VALUE(temperature) FROM root.ln.wf01.wt01 WHERE root.ln.wf01.wt01.temperature > 23 |
| Eg. IoTDB > SELECT MAX_VALUE(temperature) FROM root.ln.wf01.wt01 WHERE root.ln.wf01.wt01.temperature < 25 |
| Note: the statement needs to satisfy this constraint: <Path>(SelectClause) + <PrefixPath>(FromClause) = <Timeseries> |
| Note: If the <SensorExpr>(WhereClause) is started with <Path> and not with ROOT, the statement needs to satisfy this constraint: <PrefixPath>(FromClause) + <Path>(SensorExpr) = <Timeseries> |
| Note: In Version 0.8.2, if <WhereClause> includes `OR`, time filter can not be used. |
| </code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br><span class="line-number">2</span><br><span class="line-number">3</span><br><span class="line-number">4</span><br><span class="line-number">5</span><br><span class="line-number">6</span><br><span class="line-number">7</span><br><span class="line-number">8</span><br><span class="line-number">9</span><br><span class="line-number">10</span><br><span class="line-number">11</span><br><span class="line-number">12</span><br><span class="line-number">13</span><br><span class="line-number">14</span><br><span class="line-number">15</span><br><span class="line-number">16</span><br><span class="line-number">17</span><br><span class="line-number">18</span><br><span class="line-number">19</span><br><span class="line-number">20</span><br></div></div><ul><li>Group By Statement</li></ul> <div class="language- line-numbers-mode"><pre class="language-text"><code>SELECT <SelectClause> FROM <FromClause> WHERE <WhereClause> GROUP BY <GroupByClause> |
| SelectClause : <Function> [COMMA < Function >]* |
| Function : <AggregationFunction> LPAREN <Path> RPAREN |
| FromClause : <PrefixPath> |
| WhereClause : <Condition> [(AND | OR) <Condition>]* |
| Condition : <Expression> [(AND | OR) <Expression>]* |
| Expression : [NOT | !]? <TimeExpr> | [NOT | !]? <SensorExpr> |
| TimeExpr : TIME PrecedenceEqualOperator <TimeValue> |
| SensorExpr : (<Timeseries> | <Path>) PrecedenceEqualOperator <PointValue> |
| GroupByClause : LPAREN <TimeUnit> (COMMA TimeValue)? COMMA <TimeInterval> (COMMA <TimeInterval>)* RPAREN |
| TimeUnit : Integer <DurationUnit> |
| DurationUnit : "ms" | "s" | "m" | "h" | "d" | "w" |
| TimeInterval: LBRACKET <TimeValue> COMMA <TimeValue> RBRACKET |
| Eg: SELECT COUNT(status), COUNT(temperature) FROM root.ln.wf01.wt01 where temperature < 24 GROUP BY(5m, [1509465720000, 1509466380000]) |
| Eg. SELECT COUNT (status), MAX_VALUE(temperature) FROM root.ln.wf01.wt01 WHERE time < 1509466500000 GROUP BY(5m, 1509465660000, [1509465720000, 1509466380000]) |
| Eg. SELECT MIN_TIME(status), MIN_VALUE(temperature) FROM root.ln.wf01.wt01 WHERE temperature < 25 and time < 1509466800000 GROUP BY (3m, 1509465600000, [1509466140000, 1509466380000], [1509466440000, 1509466620000]) |
| Note: the statement needs to satisfy this constraint: <Path>(SelectClause) + <PrefixPath>(FromClause) = <Timeseries> |
| Note: If the <SensorExpr>(WhereClause) is started with <Path> and not with ROOT, the statement needs to satisfy this constraint: <PrefixPath>(FromClause) + <Path>(SensorExpr) = <Timeseries> |
| Note: <TimeValue>(TimeInterval) needs to be greater than 0 |
| Note: First <TimeValue>(TimeInterval) in needs to be smaller than second <TimeValue>(TimeInterval) |
| </code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br><span class="line-number">2</span><br><span class="line-number">3</span><br><span class="line-number">4</span><br><span class="line-number">5</span><br><span class="line-number">6</span><br><span class="line-number">7</span><br><span class="line-number">8</span><br><span class="line-number">9</span><br><span class="line-number">10</span><br><span class="line-number">11</span><br><span class="line-number">12</span><br><span class="line-number">13</span><br><span class="line-number">14</span><br><span class="line-number">15</span><br><span class="line-number">16</span><br><span class="line-number">17</span><br><span class="line-number">18</span><br><span class="line-number">19</span><br><span class="line-number">20</span><br></div></div><ul><li>Fill Statement</li></ul> <div class="language- line-numbers-mode"><pre class="language-text"><code>SELECT <SelectClause> FROM <FromClause> WHERE <WhereClause> FILL <FillClause> |
| SelectClause : <Path> [COMMA <Path>]* |
| FromClause : < PrefixPath > [COMMA < PrefixPath >]* |
| WhereClause : <WhereExpression> |
| WhereExpression : TIME EQUAL <TimeValue> |
| FillClause : LPAREN <TypeClause> [COMMA <TypeClause>]* RPAREN |
| TypeClause : <Int32Clause> | <Int64Clause> | <FloatClause> | <DoubleClause> | <BoolClause> | <TextClause> |
| Int32Clause: INT32 LBRACKET (<LinearClause> | <PreviousClause>) RBRACKET |
| Int64Clause: INT64 LBRACKET (<LinearClause> | <PreviousClause>) RBRACKET |
| FloatClause: FLOAT LBRACKET (<LinearClause> | <PreviousClause>) RBRACKET |
| DoubleClause: DOUBLE LBRACKET (<LinearClause> | <PreviousClause>) RBRACKET |
| BoolClause: BOOLEAN LBRACKET (<LinearClause> | <PreviousClause>) RBRACKET |
| TextClause: TEXT LBRACKET (<LinearClause> | <PreviousClause>) RBRACKET |
| PreviousClause : PREVIOUS [COMMA <ValidPreviousTime>]? |
| LinearClause : LINEAR [COMMA <ValidPreviousTime> COMMA <ValidBehindTime>]? |
| ValidPreviousTime, ValidBehindTime: <TimeUnit> |
| TimeUnit : Integer <DurationUnit> |
| DurationUnit : "ms" | "s" | "m" | "h" | "d" | "w" |
| Eg: SELECT temperature FROM root.ln.wf01.wt01 WHERE time = 2017-11-01T16:37:50.000 FILL(float[previous, 1m]) |
| Eg: SELECT temperature,status FROM root.ln.wf01.wt01 WHERE time = 2017-11-01T16:37:50.000 FILL (float[linear, 1m, 1m], boolean[previous, 1m]) |
| Eg: SELECT temperature,status,hardware FROM root.ln.wf01.wt01 WHERE time = 2017-11-01T16:37:50.000 FILL (float[linear, 1m, 1m], boolean[previous, 1m], text[previous]) |
| Eg: SELECT temperature,status,hardware FROM root.ln.wf01.wt01 WHERE time = 2017-11-01T16:37:50.000 FILL (float[linear], boolean[previous, 1m], text[previous]) |
| Note: the statement needs to satisfy this constraint: <PrefixPath>(FromClause) + <Path>(SelectClause) = <Timeseries> |
| Note: Integer in <TimeUnit> needs to be greater than 0 |
| </code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br><span class="line-number">2</span><br><span class="line-number">3</span><br><span class="line-number">4</span><br><span class="line-number">5</span><br><span class="line-number">6</span><br><span class="line-number">7</span><br><span class="line-number">8</span><br><span class="line-number">9</span><br><span class="line-number">10</span><br><span class="line-number">11</span><br><span class="line-number">12</span><br><span class="line-number">13</span><br><span class="line-number">14</span><br><span class="line-number">15</span><br><span class="line-number">16</span><br><span class="line-number">17</span><br><span class="line-number">18</span><br><span class="line-number">19</span><br><span class="line-number">20</span><br><span class="line-number">21</span><br><span class="line-number">22</span><br><span class="line-number">23</span><br><span class="line-number">24</span><br></div></div><ul><li>Limit Statement</li></ul> <div class="language- line-numbers-mode"><pre class="language-text"><code>SELECT <SelectClause> FROM <FromClause> [WHERE <WhereClause>] [LIMIT <LIMITClause>] [SLIMIT <SLIMITClause>] |
| SelectClause : [<Path> | Function]+ |
| Function : <AggregationFunction> LPAREN <Path> RPAREN |
| FromClause : <Path> |
| WhereClause : <Condition> [(AND | OR) <Condition>]* |
| Condition : <Expression> [(AND | OR) <Expression>]* |
| Expression: [NOT|!]?<TimeExpr> | [NOT|!]?<SensorExpr> |
| TimeExpr : TIME PrecedenceEqualOperator <TimeValue> |
| SensorExpr : (<Timeseries>|<Path>) PrecedenceEqualOperator <PointValue> |
| LIMITClause : <N> [OFFSETClause]? |
| N : NonNegativeInteger |
| OFFSETClause : OFFSET <OFFSETValue> |
| OFFSETValue : NonNegativeInteger |
| SLIMITClause : <SN> [SOFFSETClause]? |
| SN : NonNegativeInteger |
| SOFFSETClause : SOFFSET <SOFFSETValue> |
| SOFFSETValue : NonNegativeInteger |
| NonNegativeInteger:= ('+')? Digit+ |
| Eg: IoTDB > SELECT status, temperature FROM root.ln.wf01.wt01 WHERE temperature < 24 and time > 2017-11-1 0:13:00 LIMIT 3 OFFSET 2 |
| Eg. IoTDB > SELECT COUNT (status), MAX_VALUE(temperature) FROM root.ln.wf01.wt01 WHERE time < 1509466500000 GROUP BY(5m, 1509465660000, [1509465720000, 1509466380000]) LIMIT 3 |
| Note: The order of <LIMITClause> and <SLIMITClause> does not affect the grammatical correctness. |
| Note: <SLIMITClause> can only effect in Prefixpath and StarPath. |
| Note: <FillClause> can not use <LIMITClause> but not <SLIMITClause>. |
| </code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br><span class="line-number">2</span><br><span class="line-number">3</span><br><span class="line-number">4</span><br><span class="line-number">5</span><br><span class="line-number">6</span><br><span class="line-number">7</span><br><span class="line-number">8</span><br><span class="line-number">9</span><br><span class="line-number">10</span><br><span class="line-number">11</span><br><span class="line-number">12</span><br><span class="line-number">13</span><br><span class="line-number">14</span><br><span class="line-number">15</span><br><span class="line-number">16</span><br><span class="line-number">17</span><br><span class="line-number">18</span><br><span class="line-number">19</span><br><span class="line-number">20</span><br><span class="line-number">21</span><br><span class="line-number">22</span><br><span class="line-number">23</span><br></div></div><h2 id="database-management-statement"><a href="#database-management-statement" class="header-anchor">#</a> Database Management Statement</h2> <ul><li>Create User</li></ul> <div class="language- line-numbers-mode"><pre class="language-text"><code>CREATE USER <userName> <password>; |
| userName:=identifier |
| password:=identifier |
| Eg: IoTDB > CREATE USER thulab pwd; |
| </code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br><span class="line-number">2</span><br><span class="line-number">3</span><br><span class="line-number">4</span><br></div></div><ul><li>Delete User</li></ul> <div class="language- line-numbers-mode"><pre class="language-text"><code>DROP USER <userName>; |
| userName:=identifier |
| Eg: IoTDB > DROP USER xiaoming; |
| </code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br><span class="line-number">2</span><br><span class="line-number">3</span><br></div></div><ul><li>Create Role</li></ul> <div class="language- line-numbers-mode"><pre class="language-text"><code>CREATE ROLE <roleName>; |
| roleName:=identifie |
| Eg: IoTDB > CREATE ROLE admin; |
| </code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br><span class="line-number">2</span><br><span class="line-number">3</span><br></div></div><ul><li>Delete Role</li></ul> <div class="language- line-numbers-mode"><pre class="language-text"><code>DROP ROLE <roleName>; |
| roleName:=identifier |
| Eg: IoTDB > DROP ROLE admin; |
| </code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br><span class="line-number">2</span><br><span class="line-number">3</span><br></div></div><ul><li>Grant User Privileges</li></ul> <div class="language- line-numbers-mode"><pre class="language-text"><code>GRANT USER <userName> PRIVILEGES <privileges> ON <nodeName>; |
| userName:=identifier |
| nodeName:=identifier (DOT identifier)* |
| privileges:= string (COMMA string)* |
| Eg: IoTDB > GRANT USER tempuser PRIVILEGES 'DELETE_TIMESERIES' on root.ln; |
| </code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br><span class="line-number">2</span><br><span class="line-number">3</span><br><span class="line-number">4</span><br><span class="line-number">5</span><br></div></div><ul><li>Grant Role Privileges</li></ul> <div class="language- line-numbers-mode"><pre class="language-text"><code>GRANT ROLE <roleName> PRIVILEGES <privileges> ON <nodeName>; |
| privileges:= string (COMMA string)* |
| roleName:=identifier |
| nodeName:=identifier (DOT identifier)* |
| Eg: IoTDB > GRANT ROLE temprole PRIVILEGES 'DELETE_TIMESERIES' ON root.ln; |
| </code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br><span class="line-number">2</span><br><span class="line-number">3</span><br><span class="line-number">4</span><br><span class="line-number">5</span><br></div></div><ul><li>Grant User Role</li></ul> <div class="language- line-numbers-mode"><pre class="language-text"><code>GRANT <roleName> TO <userName>; |
| roleName:=identifier |
| userName:=identifier |
| Eg: IoTDB > GRANT temprole TO tempuser; |
| </code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br><span class="line-number">2</span><br><span class="line-number">3</span><br><span class="line-number">4</span><br></div></div><ul><li>Revoke User Privileges</li></ul> <div class="language- line-numbers-mode"><pre class="language-text"><code>REVOKE USER <userName> PRIVILEGES <privileges> ON <nodeName>; |
| privileges:= string (COMMA string)* |
| userName:=identifier |
| nodeName:=identifier (DOT identifier)* |
| Eg: IoTDB > REVOKE USER tempuser PRIVILEGES 'DELETE_TIMESERIES' on root.ln; |
| </code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br><span class="line-number">2</span><br><span class="line-number">3</span><br><span class="line-number">4</span><br><span class="line-number">5</span><br></div></div><ul><li>Revoke Role Privileges</li></ul> <div class="language- line-numbers-mode"><pre class="language-text"><code>REVOKE ROLE <roleName> PRIVILEGES <privileges> ON <nodeName>; |
| privileges:= string (COMMA string)* |
| roleName:= identifier |
| nodeName:=identifier (DOT identifier)* |
| Eg: IoTDB > REVOKE ROLE temprole PRIVILEGES 'DELETE_TIMESERIES' ON root.ln; |
| </code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br><span class="line-number">2</span><br><span class="line-number">3</span><br><span class="line-number">4</span><br><span class="line-number">5</span><br></div></div><ul><li>Revoke Role From User</li></ul> <div class="language- line-numbers-mode"><pre class="language-text"><code>REVOKE <roleName> FROM <userName>; |
| roleName:=identifier |
| userName:=identifier |
| Eg: IoTDB > REVOKE temproleFROM tempuser; |
| </code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br><span class="line-number">2</span><br><span class="line-number">3</span><br><span class="line-number">4</span><br></div></div><ul><li>List Users</li></ul> <div class="language- line-numbers-mode"><pre class="language-text"><code>LIST USER |
| Eg: IoTDB > LIST USER |
| </code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br><span class="line-number">2</span><br></div></div><ul><li>List Roles</li></ul> <div class="language- line-numbers-mode"><pre class="language-text"><code>LIST ROLE |
| Eg: IoTDB > LIST ROLE |
| </code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br><span class="line-number">2</span><br></div></div><ul><li>List Privileges</li></ul> <div class="language- line-numbers-mode"><pre class="language-text"><code>LIST PRIVILEGES USER <username> ON <path>; |
| username:=identifier |
| path=‘root’ (DOT identifier)* |
| Eg: IoTDB > LIST PRIVIEGES USER sgcc_wirte_user ON root.sgcc; |
| </code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br><span class="line-number">2</span><br><span class="line-number">3</span><br><span class="line-number">4</span><br></div></div><ul><li>List Privileges of Roles(On Specific Path)</li></ul> <div class="language- line-numbers-mode"><pre class="language-text"><code>LIST PRIVILEGES ROLE <roleName> ON <path>; |
| roleName:=identifier |
| path=‘root’ (DOT identifier)* |
| Eg: IoTDB > LIST PRIVIEGES ROLE wirte_role ON root.sgcc; |
| </code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br><span class="line-number">2</span><br><span class="line-number">3</span><br><span class="line-number">4</span><br></div></div><ul><li>List Privileges of Users</li></ul> <div class="language- line-numbers-mode"><pre class="language-text"><code>LIST USER PRIVILEGES <username> ; |
| username:=identifier |
| Eg: IoTDB > LIST USER PRIVIEGES tempuser; |
| </code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br><span class="line-number">2</span><br><span class="line-number">3</span><br></div></div><ul><li>List Privileges of Roles</li></ul> <div class="language- line-numbers-mode"><pre class="language-text"><code>LIST ROLE PRIVILEGES <roleName> |
| roleName:=identifier |
| Eg: IoTDB > LIST ROLE PRIVIEGES actor; |
| </code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br><span class="line-number">2</span><br><span class="line-number">3</span><br></div></div><ul><li>List Roles of Users</li></ul> <div class="language- line-numbers-mode"><pre class="language-text"><code>LIST ALL ROLE OF USER <username> ; |
| username:=identifier |
| Eg: IoTDB > LIST ALL ROLE OF USER tempuser; |
| </code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br><span class="line-number">2</span><br><span class="line-number">3</span><br></div></div><ul><li>List Users of Role</li></ul> <div class="language- line-numbers-mode"><pre class="language-text"><code>LIST ALL USER OF ROLE <roleName>; |
| roleName:=identifier |
| Eg: IoTDB > LIST ALL USER OF ROLE roleuser; |
| </code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br><span class="line-number">2</span><br><span class="line-number">3</span><br></div></div><ul><li>Update Password</li></ul> <div class="language- line-numbers-mode"><pre class="language-text"><code>UPDATE USER <username> SET PASSWORD <password>; |
| roleName:=identifier |
| password:=identifier |
| Eg: IoTDB > UPDATE USER tempuser SET PASSWORD newpwd; |
| </code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br><span class="line-number">2</span><br><span class="line-number">3</span><br><span class="line-number">4</span><br></div></div><h2 id="functions"><a href="#functions" class="header-anchor">#</a> Functions</h2> <ul><li>COUNT</li></ul> <p>The COUNT function returns the value number of timeseries(one or more) non-null values selected by the SELECT statement. The result is a signed 64-bit integer. If there are no matching rows, COUNT () returns 0.</p> <div class="language- line-numbers-mode"><pre class="language-text"><code>SELECT COUNT(Path) (COMMA COUNT(Path))* FROM <FromClause> [WHERE <WhereClause>]? |
| Eg. SELECT COUNT(status), COUNT(temperature) FROM root.ln.wf01.wt01 WHERE root.ln.wf01.wt01.temperature < 24 |
| Note: the statement needs to satisfy this constraint: <PrefixPath> + <Path> = <Timeseries> |
| </code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br><span class="line-number">2</span><br><span class="line-number">3</span><br></div></div><ul><li>FIRST</li></ul> <p>The FIRST function returns the first point value of the choosen timeseries(one or more).</p> <div class="language- line-numbers-mode"><pre class="language-text"><code>SELECT FIRST (Path) (COMMA FIRST (Path))* FROM <FromClause> [WHERE <WhereClause>]? |
| Eg. SELECT FIRST (status), FIRST (temperature) FROM root.ln.wf01.wt01 WHERE root.ln.wf01.wt01.temperature < 24 |
| Note: the statement needs to satisfy this constraint: <PrefixPath> + <Path> = <Timeseries> |
| </code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br><span class="line-number">2</span><br><span class="line-number">3</span><br></div></div><ul><li>MAX_TIME</li></ul> <p>The MAX_TIME function returns the maximum timestamp of the choosen timeseries(one or more). The result is a signed 64-bit integer, greater than 0.</p> <div class="language- line-numbers-mode"><pre class="language-text"><code>SELECT MAX_TIME (Path) (COMMA MAX_TIME (Path))* FROM <FromClause> [WHERE <WhereClause>]? |
| Eg. SELECT MAX_TIME(status), MAX_TIME(temperature) FROM root.ln.wf01.wt01 WHERE root.ln.wf01.wt01.temperature < 24 |
| Note: the statement needs to satisfy this constraint: <PrefixPath> + <Path> = <Timeseries> |
| </code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br><span class="line-number">2</span><br><span class="line-number">3</span><br></div></div><ul><li>MAX_VALUE</li></ul> <p>The MAX_VALUE function returns the maximum value(lexicographically ordered) of the choosen timeseries (one or more).</p> <div class="language- line-numbers-mode"><pre class="language-text"><code>SELECT MAX_VALUE (Path) (COMMA MAX_VALUE (Path))* FROM <FromClause> [WHERE <WhereClause>]? |
| Eg. SELECT MAX_VALUE(status), MAX_VALUE(temperature) FROM root.ln.wf01.wt01 WHERE root.ln.wf01.wt01.temperature < 24 |
| Note: the statement needs to satisfy this constraint: <PrefixPath> + <Path> = <Timeseries> |
| </code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br><span class="line-number">2</span><br><span class="line-number">3</span><br></div></div><ul><li>MEAN</li></ul> <p>The MEAN function returns the arithmetic mean value of the choosen timeseries over a specified period of time. The timeseries must be int32, int64, float, double type, and the other types are not to be calculated. The result is a double type number.</p> <div class="language- line-numbers-mode"><pre class="language-text"><code>SELECT MEAN (Path) (COMMA MEAN (Path))* FROM <FromClause> [WHERE <WhereClause>]? |
| Eg. SELECT MEAN (temperature) FROM root.ln.wf01.wt01 WHERE root.ln.wf01.wt01.temperature < 24 |
| Note: the statement needs to satisfy this constraint: <PrefixPath> + <Path> = <Timeseries> |
| </code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br><span class="line-number">2</span><br><span class="line-number">3</span><br></div></div><ul><li>MIN_TIME</li></ul> <p>The MIN_TIME function returns the minimum timestamp of the choosen timeseries(one or more). The result is a signed 64-bit integer, greater than 0.</p> <div class="language- line-numbers-mode"><pre class="language-text"><code>SELECT MIN_TIME (Path) (COMMA MIN_TIME (Path))*FROM <FromClause> [WHERE <WhereClause>]? |
| Eg. SELECT MIN_TIME(status), MIN_TIME(temperature) FROM root.ln.wf01.wt01 WHERE root.ln.wf01.wt01.temperature < 24 |
| Note: the statement needs to satisfy this constraint: <PrefixPath> + <Path> = <Timeseries> |
| </code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br><span class="line-number">2</span><br><span class="line-number">3</span><br></div></div><ul><li>MIN_VALUE</li></ul> <p>The MIN_VALUE function returns the minimum value(lexicographically ordered) of the choosen timeseries (one or more).</p> <div class="language- line-numbers-mode"><pre class="language-text"><code>SELECT MIN_VALUE (Path) (COMMA MIN_VALUE (Path))* FROM <FromClause> [WHERE <WhereClause>]? |
| Eg. SELECT MIN_VALUE(status),MIN_VALUE(temperature) FROM root.ln.wf01.wt01 WHERE root.ln.wf01.wt01.temperature < 24 |
| Note: the statement needs to satisfy this constraint: <PrefixPath> + <Path> = <Timeseries> |
| </code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br><span class="line-number">2</span><br><span class="line-number">3</span><br></div></div><ul><li>NOW</li></ul> <p>The NOW function returns the current timestamp. This function can be used in the data operation statement to represent time. The result is a signed 64-bit integer, greater than 0.</p> <div class="language- line-numbers-mode"><pre class="language-text"><code>NOW() |
| Eg. INSERT INTO root.ln.wf01.wt01(timestamp,status) VALUES(NOW(), false) |
| Eg. UPDATE root.ln.wf01.wt01 SET temperature = 23 WHERE time < NOW() |
| Eg. DELETE FROM root.ln.wf01.wt01.status, root.ln.wf01.wt01.temperature WHERE time < NOW() |
| Eg. SELECT * FROM root WHERE time < NOW() |
| Eg. SELECT COUNT(temperature) FROM root.ln.wf01.wt01 WHERE time < NOW() |
| </code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br><span class="line-number">2</span><br><span class="line-number">3</span><br><span class="line-number">4</span><br><span class="line-number">5</span><br><span class="line-number">6</span><br></div></div><ul><li>SUM</li></ul> <p>The SUM function returns the sum of the choosen timeseries (one or more) over a specified period of time. The timeseries must be int32, int64, float, double type, and the other types are not to be calculated. The result is a double type number.</p> <div class="language- line-numbers-mode"><pre class="language-text"><code>SELECT SUM(Path) (COMMA SUM(Path))* FROM <FromClause> [WHERE <WhereClause>]? |
| Eg. SELECT SUM(temperature) FROM root.ln.wf01.wt01 WHERE root.ln.wf01.wt01.temperature < 24 |
| Note: the statement needs to satisfy this constraint: <PrefixPath> + <Path> = <Timeseries> |
| </code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br><span class="line-number">2</span><br><span class="line-number">3</span><br></div></div></div> <div class="page-nav"><p class="inner"><span class="prev"> |
| ← |
| <a href="/UserGuide/V0.8.x/4-Deployment and Management/7-Build and use IoTDB by Dockerfile.html" class="prev"> |
| Dockerfile |
| </a></span> <span class="next"><a href="/UserGuide/V0.8.x/5-IoTDB SQL Documentation/2-Reference.html"> |
| Reference |
| </a> |
| → |
| </span></p></div> <p style="text-align: center;">Copyright © 2020 The Apache Software Foundation.<br> |
| Apache and the Apache feather logo are trademarks of The Apache Software Foundation</p> <p style="text-align: center; margin-top: 10px; color: #444"> |
| Contact us: Join QQ Group 659990460 | Add friend <i>tietouqiao</i> and be invited to Wechat Group<br> |
| see <a href="https://github.com/apache/iotdb/issues/1995">Join the community</a> for more</p></main></div><div class="global-ui"></div></div> |
| <script src="/assets/js/app.a12b5307.js" defer></script><script src="/assets/js/3.49f0f20a.js" defer></script><script src="/assets/js/220.1fb41856.js" defer></script> |
| </body> |
| </html> |
