<!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 1.8.0">
    <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.0fe82a0a.js" as="script"><link rel="preload" href="/assets/js/3.80bccc99.js" as="script"><link rel="preload" href="/assets/js/221.f5e2161e.js" as="script"><link rel="prefetch" href="/assets/js/10.80a35593.js"><link rel="prefetch" href="/assets/js/100.39f886a0.js"><link rel="prefetch" href="/assets/js/101.f0c4f3d3.js"><link rel="prefetch" href="/assets/js/102.a722af5a.js"><link rel="prefetch" href="/assets/js/103.506b5021.js"><link rel="prefetch" href="/assets/js/104.57763187.js"><link rel="prefetch" href="/assets/js/105.fd018c04.js"><link rel="prefetch" href="/assets/js/106.8e63314e.js"><link rel="prefetch" href="/assets/js/107.8f241345.js"><link rel="prefetch" href="/assets/js/108.d35aae0e.js"><link rel="prefetch" href="/assets/js/109.9392d338.js"><link rel="prefetch" href="/assets/js/11.b40295cb.js"><link rel="prefetch" href="/assets/js/110.83f2ffd2.js"><link rel="prefetch" href="/assets/js/111.ecbadf1f.js"><link rel="prefetch" href="/assets/js/112.d30a2720.js"><link rel="prefetch" href="/assets/js/113.2a97f9b3.js"><link rel="prefetch" href="/assets/js/114.86c9b9d9.js"><link rel="prefetch" href="/assets/js/115.4dd5f857.js"><link rel="prefetch" href="/assets/js/116.79ce6096.js"><link rel="prefetch" href="/assets/js/117.84a0191b.js"><link rel="prefetch" href="/assets/js/118.cc7d4332.js"><link rel="prefetch" href="/assets/js/119.1d4603a8.js"><link rel="prefetch" href="/assets/js/12.5cf6d2f2.js"><link rel="prefetch" href="/assets/js/120.4136bcc6.js"><link rel="prefetch" href="/assets/js/121.6d05184a.js"><link rel="prefetch" href="/assets/js/122.c2593099.js"><link rel="prefetch" href="/assets/js/123.62b38792.js"><link rel="prefetch" href="/assets/js/124.31113ad5.js"><link rel="prefetch" href="/assets/js/125.d55d473a.js"><link rel="prefetch" href="/assets/js/126.b20742e7.js"><link rel="prefetch" href="/assets/js/127.9880709b.js"><link rel="prefetch" href="/assets/js/128.f99bc35c.js"><link rel="prefetch" href="/assets/js/129.815235ac.js"><link rel="prefetch" href="/assets/js/13.b084c298.js"><link rel="prefetch" href="/assets/js/130.ddb2fc3a.js"><link rel="prefetch" href="/assets/js/131.e0b9ecdb.js"><link rel="prefetch" href="/assets/js/132.83eb98b7.js"><link rel="prefetch" href="/assets/js/133.905c8b32.js"><link rel="prefetch" href="/assets/js/134.dee2e5b7.js"><link rel="prefetch" href="/assets/js/135.7937670e.js"><link rel="prefetch" href="/assets/js/136.7265a771.js"><link rel="prefetch" href="/assets/js/137.4ae9e11f.js"><link rel="prefetch" href="/assets/js/138.5ca10fc6.js"><link rel="prefetch" href="/assets/js/139.08a57343.js"><link rel="prefetch" href="/assets/js/14.96102326.js"><link rel="prefetch" href="/assets/js/140.b4b0c198.js"><link rel="prefetch" href="/assets/js/141.600e674d.js"><link rel="prefetch" href="/assets/js/142.eab38a08.js"><link rel="prefetch" href="/assets/js/143.1f9576e1.js"><link rel="prefetch" href="/assets/js/144.9493322d.js"><link rel="prefetch" href="/assets/js/145.d97c4a9e.js"><link rel="prefetch" href="/assets/js/146.d906e7cc.js"><link rel="prefetch" href="/assets/js/147.791073b8.js"><link rel="prefetch" href="/assets/js/148.9659ba31.js"><link rel="prefetch" href="/assets/js/149.d7a41168.js"><link rel="prefetch" href="/assets/js/15.85bf89eb.js"><link rel="prefetch" href="/assets/js/150.dc4b447d.js"><link rel="prefetch" href="/assets/js/151.8d95f72e.js"><link rel="prefetch" href="/assets/js/152.418c5188.js"><link rel="prefetch" href="/assets/js/153.d429cea6.js"><link rel="prefetch" href="/assets/js/154.e303837e.js"><link rel="prefetch" href="/assets/js/155.36b53298.js"><link rel="prefetch" href="/assets/js/156.9cf80b6b.js"><link rel="prefetch" href="/assets/js/157.f1339ef9.js"><link rel="prefetch" href="/assets/js/158.d71d7a8e.js"><link rel="prefetch" href="/assets/js/159.c49bad7a.js"><link rel="prefetch" href="/assets/js/16.6088831f.js"><link rel="prefetch" href="/assets/js/160.86bf9b6c.js"><link rel="prefetch" href="/assets/js/161.bda36937.js"><link rel="prefetch" href="/assets/js/162.ab1a4693.js"><link rel="prefetch" href="/assets/js/163.314e534a.js"><link rel="prefetch" href="/assets/js/164.19757870.js"><link rel="prefetch" href="/assets/js/165.1607ea96.js"><link rel="prefetch" href="/assets/js/166.773e1acb.js"><link rel="prefetch" href="/assets/js/167.2789bddc.js"><link rel="prefetch" href="/assets/js/168.16f5f647.js"><link rel="prefetch" href="/assets/js/169.0bd9deb0.js"><link rel="prefetch" href="/assets/js/17.81308b9f.js"><link rel="prefetch" href="/assets/js/170.dbf28aac.js"><link rel="prefetch" href="/assets/js/171.043fc05f.js"><link rel="prefetch" href="/assets/js/172.6f3ba9a6.js"><link rel="prefetch" href="/assets/js/173.b9f9473b.js"><link rel="prefetch" href="/assets/js/174.7ffef574.js"><link rel="prefetch" href="/assets/js/175.4b6445c7.js"><link rel="prefetch" href="/assets/js/176.9fe99689.js"><link rel="prefetch" href="/assets/js/177.236d01b0.js"><link rel="prefetch" href="/assets/js/178.a563e1d0.js"><link rel="prefetch" href="/assets/js/179.18ad9330.js"><link rel="prefetch" href="/assets/js/18.a20cf2aa.js"><link rel="prefetch" href="/assets/js/180.8d42ab94.js"><link rel="prefetch" href="/assets/js/181.3b431f53.js"><link rel="prefetch" href="/assets/js/182.411370d1.js"><link rel="prefetch" href="/assets/js/183.1208058f.js"><link rel="prefetch" href="/assets/js/184.62f40035.js"><link rel="prefetch" href="/assets/js/185.2fa278d4.js"><link rel="prefetch" href="/assets/js/186.e1983553.js"><link rel="prefetch" href="/assets/js/187.d5b2da25.js"><link rel="prefetch" href="/assets/js/188.fee0a537.js"><link rel="prefetch" href="/assets/js/189.7eba223f.js"><link rel="prefetch" href="/assets/js/19.9667475a.js"><link rel="prefetch" href="/assets/js/190.48851103.js"><link rel="prefetch" href="/assets/js/191.3b731f2d.js"><link rel="prefetch" href="/assets/js/192.b57497ec.js"><link rel="prefetch" href="/assets/js/193.0f2228a7.js"><link rel="prefetch" href="/assets/js/194.3b24e70f.js"><link rel="prefetch" href="/assets/js/195.3e4bb7bd.js"><link rel="prefetch" href="/assets/js/196.f6a2f3cc.js"><link rel="prefetch" href="/assets/js/197.1377932a.js"><link rel="prefetch" href="/assets/js/198.f90bfa30.js"><link rel="prefetch" href="/assets/js/199.daf047dd.js"><link rel="prefetch" href="/assets/js/20.c3c8808d.js"><link rel="prefetch" href="/assets/js/200.e3af16f3.js"><link rel="prefetch" href="/assets/js/201.5ffd9d0d.js"><link rel="prefetch" href="/assets/js/202.49a57957.js"><link rel="prefetch" href="/assets/js/203.1ecbecab.js"><link rel="prefetch" href="/assets/js/204.fc781e20.js"><link rel="prefetch" href="/assets/js/205.b4f4e689.js"><link rel="prefetch" href="/assets/js/206.f206ae75.js"><link rel="prefetch" href="/assets/js/207.1026000d.js"><link rel="prefetch" href="/assets/js/208.5f5f92da.js"><link rel="prefetch" href="/assets/js/209.dce60666.js"><link rel="prefetch" href="/assets/js/21.4ea8a77c.js"><link rel="prefetch" href="/assets/js/210.4f285728.js"><link rel="prefetch" href="/assets/js/211.a94f7694.js"><link rel="prefetch" href="/assets/js/212.4bd32734.js"><link rel="prefetch" href="/assets/js/213.9607e78d.js"><link rel="prefetch" href="/assets/js/214.2dc9e7e2.js"><link rel="prefetch" href="/assets/js/215.9c4d29a2.js"><link rel="prefetch" href="/assets/js/216.b23f874f.js"><link rel="prefetch" href="/assets/js/217.0a1a89fa.js"><link rel="prefetch" href="/assets/js/218.bb85acce.js"><link rel="prefetch" href="/assets/js/219.bb784de9.js"><link rel="prefetch" href="/assets/js/22.cec2c78d.js"><link rel="prefetch" href="/assets/js/220.4d97258b.js"><link rel="prefetch" href="/assets/js/222.a1408ba9.js"><link rel="prefetch" href="/assets/js/223.37d015ea.js"><link rel="prefetch" href="/assets/js/224.9440cdee.js"><link rel="prefetch" href="/assets/js/225.89a3ed94.js"><link rel="prefetch" href="/assets/js/226.3e361f00.js"><link rel="prefetch" href="/assets/js/227.43e62294.js"><link rel="prefetch" href="/assets/js/228.5f413b56.js"><link rel="prefetch" href="/assets/js/229.eacac93e.js"><link rel="prefetch" href="/assets/js/23.04c35184.js"><link rel="prefetch" href="/assets/js/230.ee4a4ccc.js"><link rel="prefetch" href="/assets/js/231.c887b250.js"><link rel="prefetch" href="/assets/js/232.76e74238.js"><link rel="prefetch" href="/assets/js/233.73b75f5a.js"><link rel="prefetch" href="/assets/js/234.e51f339c.js"><link rel="prefetch" href="/assets/js/235.ebeb4ec6.js"><link rel="prefetch" href="/assets/js/236.6d7d7f50.js"><link rel="prefetch" href="/assets/js/237.9b3ef7bb.js"><link rel="prefetch" href="/assets/js/238.e6d3aabb.js"><link rel="prefetch" href="/assets/js/239.b4fc8802.js"><link rel="prefetch" href="/assets/js/24.eca820f7.js"><link rel="prefetch" href="/assets/js/240.6946c084.js"><link rel="prefetch" href="/assets/js/241.a3cd5ced.js"><link rel="prefetch" href="/assets/js/242.d077a307.js"><link rel="prefetch" href="/assets/js/243.be36fdd9.js"><link rel="prefetch" href="/assets/js/244.415d00ac.js"><link rel="prefetch" href="/assets/js/245.46d7357e.js"><link rel="prefetch" href="/assets/js/246.f5a72b2f.js"><link rel="prefetch" href="/assets/js/247.19747d25.js"><link rel="prefetch" href="/assets/js/248.ee65c634.js"><link rel="prefetch" href="/assets/js/249.462d0d74.js"><link rel="prefetch" href="/assets/js/25.20930126.js"><link rel="prefetch" href="/assets/js/250.e8b59505.js"><link rel="prefetch" href="/assets/js/251.3dcd1b49.js"><link rel="prefetch" href="/assets/js/252.8dd11ce4.js"><link rel="prefetch" href="/assets/js/253.23362576.js"><link rel="prefetch" href="/assets/js/254.67058c79.js"><link rel="prefetch" href="/assets/js/255.b33a36fd.js"><link rel="prefetch" href="/assets/js/256.8aabebf6.js"><link rel="prefetch" href="/assets/js/257.b9a497ab.js"><link rel="prefetch" href="/assets/js/258.f0e2ba7c.js"><link rel="prefetch" href="/assets/js/259.900dbd98.js"><link rel="prefetch" href="/assets/js/26.43f8ae34.js"><link rel="prefetch" href="/assets/js/260.f0433ae0.js"><link rel="prefetch" href="/assets/js/261.70f6156a.js"><link rel="prefetch" href="/assets/js/262.ecfa17a0.js"><link rel="prefetch" href="/assets/js/263.c5ce191f.js"><link rel="prefetch" href="/assets/js/264.9899f1fb.js"><link rel="prefetch" href="/assets/js/265.d386187b.js"><link rel="prefetch" href="/assets/js/266.51c31c58.js"><link rel="prefetch" href="/assets/js/267.7db005e7.js"><link rel="prefetch" href="/assets/js/268.04626859.js"><link rel="prefetch" href="/assets/js/269.d083cb4a.js"><link rel="prefetch" href="/assets/js/27.4c49f73e.js"><link rel="prefetch" href="/assets/js/270.f299404a.js"><link rel="prefetch" href="/assets/js/271.9e49eaab.js"><link rel="prefetch" href="/assets/js/272.ceb950ed.js"><link rel="prefetch" href="/assets/js/273.1b0d09da.js"><link rel="prefetch" href="/assets/js/274.8b5820c6.js"><link rel="prefetch" href="/assets/js/275.23196b37.js"><link rel="prefetch" href="/assets/js/276.9fad3dfc.js"><link rel="prefetch" href="/assets/js/277.13d2e020.js"><link rel="prefetch" href="/assets/js/278.9a733595.js"><link rel="prefetch" href="/assets/js/279.75adae13.js"><link rel="prefetch" href="/assets/js/28.4755c7f9.js"><link rel="prefetch" href="/assets/js/280.12acfcc1.js"><link rel="prefetch" href="/assets/js/281.e7552ef4.js"><link rel="prefetch" href="/assets/js/282.9f5d99fa.js"><link rel="prefetch" href="/assets/js/283.41c20184.js"><link rel="prefetch" href="/assets/js/284.0fad2c05.js"><link rel="prefetch" href="/assets/js/285.cdf43ae7.js"><link rel="prefetch" href="/assets/js/286.d993326a.js"><link rel="prefetch" href="/assets/js/287.f6146ea4.js"><link rel="prefetch" href="/assets/js/288.33516f72.js"><link rel="prefetch" href="/assets/js/289.06c8f3f0.js"><link rel="prefetch" href="/assets/js/29.069cf689.js"><link rel="prefetch" href="/assets/js/290.d7414dff.js"><link rel="prefetch" href="/assets/js/291.a46316a2.js"><link rel="prefetch" href="/assets/js/292.35ccdf37.js"><link rel="prefetch" href="/assets/js/293.13cab923.js"><link rel="prefetch" href="/assets/js/294.8108d183.js"><link rel="prefetch" href="/assets/js/295.097b59c4.js"><link rel="prefetch" href="/assets/js/296.979ba522.js"><link rel="prefetch" href="/assets/js/297.fe44e024.js"><link rel="prefetch" href="/assets/js/298.eef0fcd7.js"><link rel="prefetch" href="/assets/js/299.40c8107a.js"><link rel="prefetch" href="/assets/js/30.f2a3f0c4.js"><link rel="prefetch" href="/assets/js/300.5727420d.js"><link rel="prefetch" href="/assets/js/301.50bd366c.js"><link rel="prefetch" href="/assets/js/302.7b6d2802.js"><link rel="prefetch" href="/assets/js/303.b5c6b9c2.js"><link rel="prefetch" href="/assets/js/304.dc052fc1.js"><link rel="prefetch" href="/assets/js/305.91aab185.js"><link rel="prefetch" href="/assets/js/306.f129c652.js"><link rel="prefetch" href="/assets/js/307.a5f00175.js"><link rel="prefetch" href="/assets/js/308.42f8217f.js"><link rel="prefetch" href="/assets/js/309.2929fcc7.js"><link rel="prefetch" href="/assets/js/31.7aaaf22f.js"><link rel="prefetch" href="/assets/js/310.516b2376.js"><link rel="prefetch" href="/assets/js/311.906d493c.js"><link rel="prefetch" href="/assets/js/312.c121b9dc.js"><link rel="prefetch" href="/assets/js/313.2db3a3bc.js"><link rel="prefetch" href="/assets/js/314.b6182cf6.js"><link rel="prefetch" href="/assets/js/315.2776e0bb.js"><link rel="prefetch" href="/assets/js/316.253a9866.js"><link rel="prefetch" href="/assets/js/317.151d3ea5.js"><link rel="prefetch" href="/assets/js/318.fd46503b.js"><link rel="prefetch" href="/assets/js/319.3f12ded1.js"><link rel="prefetch" href="/assets/js/32.047996cb.js"><link rel="prefetch" href="/assets/js/320.f798f9e5.js"><link rel="prefetch" href="/assets/js/321.e68fbabd.js"><link rel="prefetch" href="/assets/js/322.7a725b7b.js"><link rel="prefetch" href="/assets/js/323.ab25ae74.js"><link rel="prefetch" href="/assets/js/324.39702467.js"><link rel="prefetch" href="/assets/js/325.2146fbf0.js"><link rel="prefetch" href="/assets/js/326.39149066.js"><link rel="prefetch" href="/assets/js/327.a56495d4.js"><link rel="prefetch" href="/assets/js/328.27d2b495.js"><link rel="prefetch" href="/assets/js/329.a3747311.js"><link rel="prefetch" href="/assets/js/33.7e3852b2.js"><link rel="prefetch" href="/assets/js/330.275d7940.js"><link rel="prefetch" href="/assets/js/331.480508ee.js"><link rel="prefetch" href="/assets/js/332.20919351.js"><link rel="prefetch" href="/assets/js/333.b77a5dc0.js"><link rel="prefetch" href="/assets/js/334.a945711e.js"><link rel="prefetch" href="/assets/js/335.364e1c87.js"><link rel="prefetch" href="/assets/js/336.596a94bc.js"><link rel="prefetch" href="/assets/js/337.bf3d4a63.js"><link rel="prefetch" href="/assets/js/338.b09a9cff.js"><link rel="prefetch" href="/assets/js/339.44aea7ae.js"><link rel="prefetch" href="/assets/js/34.8b617bc2.js"><link rel="prefetch" href="/assets/js/340.a5d7bde5.js"><link rel="prefetch" href="/assets/js/341.c2eb533d.js"><link rel="prefetch" href="/assets/js/342.15ebc005.js"><link rel="prefetch" href="/assets/js/343.960b7508.js"><link rel="prefetch" href="/assets/js/344.11e52cee.js"><link rel="prefetch" href="/assets/js/345.b1b28d60.js"><link rel="prefetch" href="/assets/js/346.a6ed89b5.js"><link rel="prefetch" href="/assets/js/347.63a9d29a.js"><link rel="prefetch" href="/assets/js/348.dd9b78f9.js"><link rel="prefetch" href="/assets/js/349.bd94c361.js"><link rel="prefetch" href="/assets/js/35.0cbeeddf.js"><link rel="prefetch" href="/assets/js/350.87665dc2.js"><link rel="prefetch" href="/assets/js/351.1b7b9f3e.js"><link rel="prefetch" href="/assets/js/352.94e8df5e.js"><link rel="prefetch" href="/assets/js/353.1b6e7af9.js"><link rel="prefetch" href="/assets/js/354.871e7755.js"><link rel="prefetch" href="/assets/js/355.bdcf1715.js"><link rel="prefetch" href="/assets/js/356.322f548a.js"><link rel="prefetch" href="/assets/js/357.2f2aa0b8.js"><link rel="prefetch" href="/assets/js/358.d969cfe2.js"><link rel="prefetch" href="/assets/js/359.2022ef16.js"><link rel="prefetch" href="/assets/js/36.acba8a95.js"><link rel="prefetch" href="/assets/js/360.077d9617.js"><link rel="prefetch" href="/assets/js/361.ef50624a.js"><link rel="prefetch" href="/assets/js/362.93de4f29.js"><link rel="prefetch" href="/assets/js/363.fca50e3b.js"><link rel="prefetch" href="/assets/js/364.7e7d3ba9.js"><link rel="prefetch" href="/assets/js/365.8a6c9674.js"><link rel="prefetch" href="/assets/js/366.6a3771ff.js"><link rel="prefetch" href="/assets/js/367.800c979a.js"><link rel="prefetch" href="/assets/js/368.f393b087.js"><link rel="prefetch" href="/assets/js/369.ad587237.js"><link rel="prefetch" href="/assets/js/37.6741f71b.js"><link rel="prefetch" href="/assets/js/370.2dff61a5.js"><link rel="prefetch" href="/assets/js/371.73b96348.js"><link rel="prefetch" href="/assets/js/372.e7fd06c9.js"><link rel="prefetch" href="/assets/js/373.0426b78b.js"><link rel="prefetch" href="/assets/js/374.3ffbf7bd.js"><link rel="prefetch" href="/assets/js/375.ee4b4f01.js"><link rel="prefetch" href="/assets/js/376.795ff584.js"><link rel="prefetch" href="/assets/js/377.c86dbefa.js"><link rel="prefetch" href="/assets/js/378.0ff0e64b.js"><link rel="prefetch" href="/assets/js/379.0b7d4a09.js"><link rel="prefetch" href="/assets/js/38.872948ca.js"><link rel="prefetch" href="/assets/js/380.1ccf60b1.js"><link rel="prefetch" href="/assets/js/381.2c473e49.js"><link rel="prefetch" href="/assets/js/382.74854259.js"><link rel="prefetch" href="/assets/js/383.380b26cd.js"><link rel="prefetch" href="/assets/js/384.d0e7b164.js"><link rel="prefetch" href="/assets/js/385.42d926b6.js"><link rel="prefetch" href="/assets/js/386.e83f4899.js"><link rel="prefetch" href="/assets/js/387.95032326.js"><link rel="prefetch" href="/assets/js/388.fa8f316d.js"><link rel="prefetch" href="/assets/js/389.ec4b5c1a.js"><link rel="prefetch" href="/assets/js/39.4c7ca432.js"><link rel="prefetch" href="/assets/js/390.dc0b7850.js"><link rel="prefetch" href="/assets/js/391.c6fb3694.js"><link rel="prefetch" href="/assets/js/392.a4d0a2e5.js"><link rel="prefetch" href="/assets/js/393.97737dd9.js"><link rel="prefetch" href="/assets/js/394.29e8d981.js"><link rel="prefetch" href="/assets/js/395.1c15eb16.js"><link rel="prefetch" href="/assets/js/396.808e0cd2.js"><link rel="prefetch" href="/assets/js/397.a90a815e.js"><link rel="prefetch" href="/assets/js/398.e3b312e5.js"><link rel="prefetch" href="/assets/js/399.664d6571.js"><link rel="prefetch" href="/assets/js/4.99e5432f.js"><link rel="prefetch" href="/assets/js/40.8b1b1448.js"><link rel="prefetch" href="/assets/js/400.ee648749.js"><link rel="prefetch" href="/assets/js/401.75eac689.js"><link rel="prefetch" href="/assets/js/402.2d1d459a.js"><link rel="prefetch" href="/assets/js/403.946b9341.js"><link rel="prefetch" href="/assets/js/404.4362745d.js"><link rel="prefetch" href="/assets/js/405.ad816b3a.js"><link rel="prefetch" href="/assets/js/406.b77cd48b.js"><link rel="prefetch" href="/assets/js/407.090539ef.js"><link rel="prefetch" href="/assets/js/408.1abe69f6.js"><link rel="prefetch" href="/assets/js/409.c40daa26.js"><link rel="prefetch" href="/assets/js/41.32e47875.js"><link rel="prefetch" href="/assets/js/410.f50d6bdb.js"><link rel="prefetch" href="/assets/js/411.5ff61183.js"><link rel="prefetch" href="/assets/js/412.0e5dc4dd.js"><link rel="prefetch" href="/assets/js/413.b645444c.js"><link rel="prefetch" href="/assets/js/414.a3696d87.js"><link rel="prefetch" href="/assets/js/415.345fd8d2.js"><link rel="prefetch" href="/assets/js/416.d48c69de.js"><link rel="prefetch" href="/assets/js/417.48df988f.js"><link rel="prefetch" href="/assets/js/418.decd8d51.js"><link rel="prefetch" href="/assets/js/419.f7758868.js"><link rel="prefetch" href="/assets/js/42.9a545fc9.js"><link rel="prefetch" href="/assets/js/420.d781a75e.js"><link rel="prefetch" href="/assets/js/421.7d09b20a.js"><link rel="prefetch" href="/assets/js/422.76ccb9f0.js"><link rel="prefetch" href="/assets/js/423.0e459de7.js"><link rel="prefetch" href="/assets/js/424.378823bc.js"><link rel="prefetch" href="/assets/js/425.4a8621b8.js"><link rel="prefetch" href="/assets/js/426.84f5273f.js"><link rel="prefetch" href="/assets/js/427.35337a85.js"><link rel="prefetch" href="/assets/js/428.ac53d000.js"><link rel="prefetch" href="/assets/js/429.31aa3c27.js"><link rel="prefetch" href="/assets/js/43.e3241155.js"><link rel="prefetch" href="/assets/js/430.f06156c6.js"><link rel="prefetch" href="/assets/js/431.e36da030.js"><link rel="prefetch" href="/assets/js/432.9966e328.js"><link rel="prefetch" href="/assets/js/433.91036833.js"><link rel="prefetch" href="/assets/js/434.5fecac87.js"><link rel="prefetch" href="/assets/js/435.6aa265c5.js"><link rel="prefetch" href="/assets/js/436.1d2ed591.js"><link rel="prefetch" href="/assets/js/437.d4ffb97d.js"><link rel="prefetch" href="/assets/js/438.9bc1c259.js"><link rel="prefetch" href="/assets/js/439.eb70778f.js"><link rel="prefetch" href="/assets/js/44.5c8e47a4.js"><link rel="prefetch" href="/assets/js/440.0d1afe9a.js"><link rel="prefetch" href="/assets/js/441.ea1ca320.js"><link rel="prefetch" href="/assets/js/442.2e8a7273.js"><link rel="prefetch" href="/assets/js/443.304263cb.js"><link rel="prefetch" href="/assets/js/444.e6a2f559.js"><link rel="prefetch" href="/assets/js/445.85c966a7.js"><link rel="prefetch" href="/assets/js/446.0f0ad473.js"><link rel="prefetch" href="/assets/js/447.db9e3059.js"><link rel="prefetch" href="/assets/js/448.e164d193.js"><link rel="prefetch" href="/assets/js/449.d837f327.js"><link rel="prefetch" href="/assets/js/45.0d3e1654.js"><link rel="prefetch" href="/assets/js/450.b5e27162.js"><link rel="prefetch" href="/assets/js/451.912eea61.js"><link rel="prefetch" href="/assets/js/452.48899981.js"><link rel="prefetch" href="/assets/js/453.7ae7e168.js"><link rel="prefetch" href="/assets/js/454.7f2fd0bc.js"><link rel="prefetch" href="/assets/js/455.5e5f9203.js"><link rel="prefetch" href="/assets/js/456.d40ccb43.js"><link rel="prefetch" href="/assets/js/457.0f67cf83.js"><link rel="prefetch" href="/assets/js/458.50b72d51.js"><link rel="prefetch" href="/assets/js/459.97db0e0d.js"><link rel="prefetch" href="/assets/js/46.733d682a.js"><link rel="prefetch" href="/assets/js/460.53e1416a.js"><link rel="prefetch" href="/assets/js/461.0ed7f49c.js"><link rel="prefetch" href="/assets/js/462.29a59885.js"><link rel="prefetch" href="/assets/js/463.338fbefa.js"><link rel="prefetch" href="/assets/js/464.7ba4014e.js"><link rel="prefetch" href="/assets/js/465.1e819f78.js"><link rel="prefetch" href="/assets/js/466.49848a3f.js"><link rel="prefetch" href="/assets/js/467.9795c650.js"><link rel="prefetch" href="/assets/js/468.6d5fe511.js"><link rel="prefetch" href="/assets/js/469.7f7dc954.js"><link rel="prefetch" href="/assets/js/47.7ded670f.js"><link rel="prefetch" href="/assets/js/470.b332d795.js"><link rel="prefetch" href="/assets/js/471.5331ec3d.js"><link rel="prefetch" href="/assets/js/472.5f71339d.js"><link rel="prefetch" href="/assets/js/473.c80a6948.js"><link rel="prefetch" href="/assets/js/474.6dbcb355.js"><link rel="prefetch" href="/assets/js/475.6a15f050.js"><link rel="prefetch" href="/assets/js/476.3843e81a.js"><link rel="prefetch" href="/assets/js/477.c039d005.js"><link rel="prefetch" href="/assets/js/478.840b628c.js"><link rel="prefetch" href="/assets/js/479.0c2e5b84.js"><link rel="prefetch" href="/assets/js/48.d6e61980.js"><link rel="prefetch" href="/assets/js/480.623a5aa9.js"><link rel="prefetch" href="/assets/js/481.567e307e.js"><link rel="prefetch" href="/assets/js/482.967b8baa.js"><link rel="prefetch" href="/assets/js/483.6237aef5.js"><link rel="prefetch" href="/assets/js/484.fac62c57.js"><link rel="prefetch" href="/assets/js/485.ce480c6e.js"><link rel="prefetch" href="/assets/js/486.88052326.js"><link rel="prefetch" href="/assets/js/487.3990c45a.js"><link rel="prefetch" href="/assets/js/488.625de369.js"><link rel="prefetch" href="/assets/js/489.9ba35403.js"><link rel="prefetch" href="/assets/js/49.3d53d16d.js"><link rel="prefetch" href="/assets/js/490.1ab37035.js"><link rel="prefetch" href="/assets/js/491.e1b0407f.js"><link rel="prefetch" href="/assets/js/492.92ee61c8.js"><link rel="prefetch" href="/assets/js/493.2ffeae09.js"><link rel="prefetch" href="/assets/js/494.abdd341d.js"><link rel="prefetch" href="/assets/js/495.6a60193b.js"><link rel="prefetch" href="/assets/js/496.74ae2f01.js"><link rel="prefetch" href="/assets/js/497.2e7c2448.js"><link rel="prefetch" href="/assets/js/498.06c31ba6.js"><link rel="prefetch" href="/assets/js/499.844a3d5a.js"><link rel="prefetch" href="/assets/js/5.2c66b9cb.js"><link rel="prefetch" href="/assets/js/50.84aee54d.js"><link rel="prefetch" href="/assets/js/500.588c9058.js"><link rel="prefetch" href="/assets/js/501.f8e6401a.js"><link rel="prefetch" href="/assets/js/502.e01619c5.js"><link rel="prefetch" href="/assets/js/503.2d39a7b3.js"><link rel="prefetch" href="/assets/js/504.29df9bd0.js"><link rel="prefetch" href="/assets/js/505.bf3f01b7.js"><link rel="prefetch" href="/assets/js/506.40be9cfb.js"><link rel="prefetch" href="/assets/js/507.2e4be034.js"><link rel="prefetch" href="/assets/js/508.9428cb66.js"><link rel="prefetch" href="/assets/js/509.348fb99e.js"><link rel="prefetch" href="/assets/js/51.7bee7688.js"><link rel="prefetch" href="/assets/js/510.915db7c6.js"><link rel="prefetch" href="/assets/js/511.ce3248a7.js"><link rel="prefetch" href="/assets/js/512.8cd57842.js"><link rel="prefetch" href="/assets/js/513.024de1d4.js"><link rel="prefetch" href="/assets/js/514.105ca9cd.js"><link rel="prefetch" href="/assets/js/515.6099749d.js"><link rel="prefetch" href="/assets/js/516.36e3e79c.js"><link rel="prefetch" href="/assets/js/517.cc27ee13.js"><link rel="prefetch" href="/assets/js/518.fb85f210.js"><link rel="prefetch" href="/assets/js/519.eae02e67.js"><link rel="prefetch" href="/assets/js/52.6d51118b.js"><link rel="prefetch" href="/assets/js/520.b2fe1484.js"><link rel="prefetch" href="/assets/js/521.42e2bea2.js"><link rel="prefetch" href="/assets/js/522.e04eb229.js"><link rel="prefetch" href="/assets/js/523.c7da0090.js"><link rel="prefetch" href="/assets/js/524.ce3de342.js"><link rel="prefetch" href="/assets/js/525.ae5041ab.js"><link rel="prefetch" href="/assets/js/53.6d9f67be.js"><link rel="prefetch" href="/assets/js/54.6a8f5546.js"><link rel="prefetch" href="/assets/js/55.f008d2fb.js"><link rel="prefetch" href="/assets/js/56.29e949ab.js"><link rel="prefetch" href="/assets/js/57.c53c39b8.js"><link rel="prefetch" href="/assets/js/58.82608a79.js"><link rel="prefetch" href="/assets/js/59.558bfbc3.js"><link rel="prefetch" href="/assets/js/6.db8c6d5d.js"><link rel="prefetch" href="/assets/js/60.02c808e3.js"><link rel="prefetch" href="/assets/js/61.32b5d473.js"><link rel="prefetch" href="/assets/js/62.341cae24.js"><link rel="prefetch" href="/assets/js/63.b598f424.js"><link rel="prefetch" href="/assets/js/64.e30d770e.js"><link rel="prefetch" href="/assets/js/65.28e5bacf.js"><link rel="prefetch" href="/assets/js/66.0557eb73.js"><link rel="prefetch" href="/assets/js/67.050c32a8.js"><link rel="prefetch" href="/assets/js/68.775d3316.js"><link rel="prefetch" href="/assets/js/69.aa6adcab.js"><link rel="prefetch" href="/assets/js/7.c4a32f95.js"><link rel="prefetch" href="/assets/js/70.844ce1c8.js"><link rel="prefetch" href="/assets/js/71.759eae1c.js"><link rel="prefetch" href="/assets/js/72.3c3ef83b.js"><link rel="prefetch" href="/assets/js/73.4694f012.js"><link rel="prefetch" href="/assets/js/74.feb92d1d.js"><link rel="prefetch" href="/assets/js/75.14da8734.js"><link rel="prefetch" href="/assets/js/76.a0c63761.js"><link rel="prefetch" href="/assets/js/77.2001f0a0.js"><link rel="prefetch" href="/assets/js/78.b250d25e.js"><link rel="prefetch" href="/assets/js/79.c46807c8.js"><link rel="prefetch" href="/assets/js/8.0d7c7c38.js"><link rel="prefetch" href="/assets/js/80.3a3a9451.js"><link rel="prefetch" href="/assets/js/81.ff75cbfb.js"><link rel="prefetch" href="/assets/js/82.a1a40237.js"><link rel="prefetch" href="/assets/js/83.4a49be4e.js"><link rel="prefetch" href="/assets/js/84.845ccb5e.js"><link rel="prefetch" href="/assets/js/85.d9ead868.js"><link rel="prefetch" href="/assets/js/86.98029c6c.js"><link rel="prefetch" href="/assets/js/87.781b02d0.js"><link rel="prefetch" href="/assets/js/88.14b79cff.js"><link rel="prefetch" href="/assets/js/89.530d5cf7.js"><link rel="prefetch" href="/assets/js/9.79f3dceb.js"><link rel="prefetch" href="/assets/js/90.a474cb71.js"><link rel="prefetch" href="/assets/js/91.73716c27.js"><link rel="prefetch" href="/assets/js/92.552b5a0d.js"><link rel="prefetch" href="/assets/js/93.392ece00.js"><link rel="prefetch" href="/assets/js/94.2af538c0.js"><link rel="prefetch" href="/assets/js/95.4f851b6b.js"><link rel="prefetch" href="/assets/js/96.4ed79b6a.js"><link rel="prefetch" href="/assets/js/97.5fe20bcf.js"><link rel="prefetch" href="/assets/js/98.f0b08288.js"><link rel="prefetch" href="/assets/js/99.6d805394.js"><link rel="prefetch" href="/assets/js/vendors~docsearch.ac6383e3.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/2-Reference.html" class="nav-link">English</a></li><li class="dropdown-item"><!----> <a href="/zh/UserGuide/V0.8.x/5-IoTDB SQL Documentation/2-Reference.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/2-Reference.html" class="nav-link">English</a></li><li class="dropdown-item"><!----> <a href="/zh/UserGuide/V0.8.x/5-IoTDB SQL Documentation/2-Reference.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="sidebar-link">IoTDB Query Statement</a></li><li><a href="/UserGuide/V0.8.x/5-IoTDB SQL Documentation/2-Reference.html" class="active 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="reference"><a href="#reference" class="header-anchor">#</a> Reference</h1> <h2 id="keywords"><a href="#keywords" class="header-anchor">#</a> Keywords</h2> <div class="language- line-numbers-mode"><pre class="language-text"><code>Keywords for IoTDB (case insensitive):
ADD, BY, COMPRESSOR, CREATE, DATATYPE, DELETE, DESCRIBE, DROP, ENCODING, EXIT, FROM, GRANT, GROUP, LABLE, LINK, INDEX, INSERT, INTO, LOAD, MAX_POINT_NUMBER, MERGE, METADATA, ON, ORDER, PASSWORD, PRIVILEGES, PROPERTY, QUIT, REVOKE, ROLE, ROOT, SELECT, SET, SHOW, STORAGE, TIME, TIMESERIES, TIMESTAMP, TO, UNLINK, UPDATE, USER, USING, VALUE, VALUES, WHERE, WITH

Keywords with special meanings (case sensitive):
* Data Types: BOOLEAN, DOUBLE, FLOAT, INT32, INT64, TEXT (Only capitals is acceptable)
* Encoding Methods: BITMAP, DFT, GORILLA, PLAIN, RLE, TS_2DIFF (Only capitals is acceptable)
* Compression Methods: UNCOMPRESSED, SNAPPY (Only capitals is acceptable)
* Logical symbol: AND, &amp;, &amp;&amp;, OR, | , ||, NOT, !, TRUE, FALSE
</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><h2 id="identifiers"><a href="#identifiers" class="header-anchor">#</a> Identifiers</h2> <div class="language- line-numbers-mode"><pre class="language-text"><code>QUOTE := '\'';
DOT := '.';
COLON : ':' ;
COMMA := ',' ;
SEMICOLON := ';' ;
LPAREN := '(' ;
RPAREN := ')' ;
LBRACKET := '[';
RBRACKET := ']';
EQUAL := '=' | '==';
NOTEQUAL := '&lt;&gt;' | '!=';
LESSTHANOREQUALTO := '&lt;=';
LESSTHAN := '&lt;';
GREATERTHANOREQUALTO := '&gt;=';
GREATERTHAN := '&gt;';
DIVIDE := '/';
PLUS := '+';
MINUS := '-';
STAR := '*';
Letter := 'a'..'z' | 'A'..'Z';
HexDigit := 'a'..'f' | 'A'..'F';
Digit := '0'..'9';
Boolean := TRUE | FALSE | 0 | 1 (case insensitive)

</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><div class="language- line-numbers-mode"><pre class="language-text"><code>StringLiteral := ( '\'' ( ~('\'') )* '\'' | '\&quot;' ( ~('\&quot;') )* '\&quot;');
eg. ‘abc’
eg. “abc”
</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 class="language- line-numbers-mode"><pre class="language-text"><code>Integer := ('-' | '+')? Digit+;
eg. 123
eg. -222
</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 class="language- line-numbers-mode"><pre class="language-text"><code>Float := ('-' | '+')? Digit+ DOT Digit+ (('e' | 'E') ('-' | '+')? Digit+)?;
eg. 3.1415
eg. 1.2E10
eg. -1.33
</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><div class="language- line-numbers-mode"><pre class="language-text"><code>Identifier := (Letter | '_') (Letter | Digit | '_' | MINUS)*;
eg. a123
eg. _abc123

</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="literals"><a href="#literals" class="header-anchor">#</a> Literals</h2> <div class="language- line-numbers-mode"><pre class="language-text"><code>PointValue : Integer | Float | StringLiteral | Boolean
</code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br></div></div><div class="language- line-numbers-mode"><pre class="language-text"><code>TimeValue : Integer | DateTime | ISO8601 | NOW()
Note: Integer means timestamp type.

DateTime : 
eg. 2016-11-16T16:22:33+08:00
eg. 2016-11-16 16:22:33+08:00
eg. 2016-11-16T16:22:33.000+08:00
eg. 2016-11-16 16:22:33.000+08:00
Note: DateTime Type can support several types, see Chapter 3 Datetime 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></div></div><div class="language- line-numbers-mode"><pre class="language-text"><code>PrecedenceEqualOperator : EQUAL | NOTEQUAL | LESSTHANOREQUALTO | LESSTHAN | GREATERTHANOREQUALTO | GREATERTHAN
</code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br></div></div><div class="language- line-numbers-mode"><pre class="language-text"><code>Timeseries : ROOT [DOT &lt;LayerName&gt;]* DOT &lt;SensorName&gt;
LayerName : Identifier
SensorName : Identifier
eg. root.ln.wf01.wt01.status
eg. root.sgcc.wf03.wt01.temperature
Note: Timeseries must be start with `root`(case insensitive) and end with sensor name.
</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><div class="language- line-numbers-mode"><pre class="language-text"><code>PrefixPath : ROOT (DOT &lt;LayerName&gt;)*
LayerName : Identifier | STAR
eg. root.sgcc
eg. root.*
</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><div class="language- line-numbers-mode"><pre class="language-text"><code>Path: (ROOT | &lt;LayerName&gt;) (DOT &lt;LayerName&gt;)* 
LayerName: Identifier | STAR
eg. root.ln.wf01.wt01.status
eg. root.*.wf01.wt01.status
eg. root.ln.wf01.wt01.*
eg. *.wt01.*
eg. *
</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></div> <div class="page-nav"><p class="inner"><span class="prev">
        ←
        <a href="/UserGuide/V0.8.x/5-IoTDB SQL Documentation/1-IoTDB Query Statement.html" class="prev">
          IoTDB Query Statement
        </a></span> <span class="next"><a href="/UserGuide/V0.8.x/6-JDBC API/1-JDBC API.html">
          JDBC API
        </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.0fe82a0a.js" defer></script><script src="/assets/js/3.80bccc99.js" defer></script><script src="/assets/js/221.f5e2161e.js" defer></script>
  </body>
</html>