| <!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 1.8.2"> |
| <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.ccadf850.css" as="style"><link rel="preload" href="/assets/js/app.e529006f.js" as="script"><link rel="preload" href="/assets/js/3.76c26675.js" as="script"><link rel="preload" href="/assets/js/279.211a8ff7.js" as="script"><link rel="prefetch" href="/assets/js/10.77e7d27b.js"><link rel="prefetch" href="/assets/js/100.30c18ee2.js"><link rel="prefetch" href="/assets/js/101.6ea96e4c.js"><link rel="prefetch" href="/assets/js/102.0fb45e4a.js"><link rel="prefetch" href="/assets/js/103.e997b374.js"><link rel="prefetch" href="/assets/js/104.ea9eff2c.js"><link rel="prefetch" href="/assets/js/105.3ebb778d.js"><link rel="prefetch" href="/assets/js/106.2ca4bc2b.js"><link rel="prefetch" href="/assets/js/107.9169e570.js"><link rel="prefetch" href="/assets/js/108.9a31368f.js"><link rel="prefetch" href="/assets/js/109.1be50441.js"><link rel="prefetch" href="/assets/js/11.c977ea47.js"><link rel="prefetch" href="/assets/js/110.4ec8468c.js"><link rel="prefetch" href="/assets/js/111.8805e5e7.js"><link rel="prefetch" href="/assets/js/112.d0db7dc8.js"><link rel="prefetch" href="/assets/js/113.5413f934.js"><link rel="prefetch" href="/assets/js/114.cefbca52.js"><link rel="prefetch" href="/assets/js/115.e14fdc63.js"><link rel="prefetch" href="/assets/js/116.c2e48d2f.js"><link rel="prefetch" href="/assets/js/117.52eadd2c.js"><link rel="prefetch" href="/assets/js/118.71b11567.js"><link rel="prefetch" href="/assets/js/119.25d6cec9.js"><link rel="prefetch" href="/assets/js/12.30292c04.js"><link rel="prefetch" href="/assets/js/120.b6606d3b.js"><link rel="prefetch" href="/assets/js/121.b9b9564c.js"><link rel="prefetch" href="/assets/js/122.e8390392.js"><link rel="prefetch" href="/assets/js/123.c15cbcea.js"><link rel="prefetch" href="/assets/js/124.ea6046f5.js"><link rel="prefetch" href="/assets/js/125.ed1f3f62.js"><link rel="prefetch" href="/assets/js/126.c382e1e7.js"><link rel="prefetch" href="/assets/js/127.718002bd.js"><link rel="prefetch" href="/assets/js/128.137d3389.js"><link rel="prefetch" href="/assets/js/129.eaeb4a52.js"><link rel="prefetch" href="/assets/js/13.43c63c4e.js"><link rel="prefetch" href="/assets/js/130.aa985554.js"><link rel="prefetch" href="/assets/js/131.c161d926.js"><link rel="prefetch" href="/assets/js/132.13dbd2dd.js"><link rel="prefetch" href="/assets/js/133.741f2220.js"><link rel="prefetch" href="/assets/js/134.5d8b5971.js"><link rel="prefetch" href="/assets/js/135.51c46f1c.js"><link rel="prefetch" href="/assets/js/136.d9056325.js"><link rel="prefetch" href="/assets/js/137.3e3ee280.js"><link rel="prefetch" href="/assets/js/138.be9e2799.js"><link rel="prefetch" href="/assets/js/139.b6b96272.js"><link rel="prefetch" href="/assets/js/14.4a4bedae.js"><link rel="prefetch" href="/assets/js/140.d9ff26f4.js"><link rel="prefetch" href="/assets/js/141.b5c8de5e.js"><link rel="prefetch" href="/assets/js/142.4ad0b95d.js"><link rel="prefetch" href="/assets/js/143.4d76de38.js"><link rel="prefetch" href="/assets/js/144.1b8d27fa.js"><link rel="prefetch" href="/assets/js/145.cf17e7e9.js"><link rel="prefetch" href="/assets/js/146.f6fbd000.js"><link rel="prefetch" href="/assets/js/147.60b13316.js"><link rel="prefetch" href="/assets/js/148.886c7bee.js"><link rel="prefetch" href="/assets/js/149.8c19a583.js"><link rel="prefetch" href="/assets/js/15.43bf9dc7.js"><link rel="prefetch" href="/assets/js/150.ccf26766.js"><link rel="prefetch" href="/assets/js/151.24f71fcd.js"><link rel="prefetch" href="/assets/js/152.1436471b.js"><link rel="prefetch" href="/assets/js/153.db07a66b.js"><link rel="prefetch" href="/assets/js/154.56990e3b.js"><link rel="prefetch" href="/assets/js/155.449426c1.js"><link rel="prefetch" href="/assets/js/156.ddc52a7e.js"><link rel="prefetch" href="/assets/js/157.efc10b9c.js"><link rel="prefetch" href="/assets/js/158.6bee5440.js"><link rel="prefetch" href="/assets/js/159.2f3ae3d6.js"><link rel="prefetch" href="/assets/js/16.8d99ed47.js"><link rel="prefetch" href="/assets/js/160.8cec9f43.js"><link rel="prefetch" href="/assets/js/161.27859b1a.js"><link rel="prefetch" href="/assets/js/162.f5018145.js"><link rel="prefetch" href="/assets/js/163.4799d03c.js"><link rel="prefetch" href="/assets/js/164.b1a69896.js"><link rel="prefetch" href="/assets/js/165.313b4a11.js"><link rel="prefetch" href="/assets/js/166.470d2a3e.js"><link rel="prefetch" href="/assets/js/167.8d7d42a9.js"><link rel="prefetch" href="/assets/js/168.949a1c1d.js"><link rel="prefetch" href="/assets/js/169.29b4bef8.js"><link rel="prefetch" href="/assets/js/17.eb141f9f.js"><link rel="prefetch" href="/assets/js/170.e9451a3b.js"><link rel="prefetch" href="/assets/js/171.6561c4c3.js"><link rel="prefetch" href="/assets/js/172.92e6a688.js"><link rel="prefetch" href="/assets/js/173.f19afbc7.js"><link rel="prefetch" href="/assets/js/174.286a2886.js"><link rel="prefetch" href="/assets/js/175.c1a4bf57.js"><link rel="prefetch" href="/assets/js/176.99658bfe.js"><link rel="prefetch" href="/assets/js/177.a5c3e294.js"><link rel="prefetch" href="/assets/js/178.81146b2f.js"><link rel="prefetch" href="/assets/js/179.7e974bee.js"><link rel="prefetch" href="/assets/js/18.40cc5fb0.js"><link rel="prefetch" href="/assets/js/180.d4ee92c3.js"><link rel="prefetch" href="/assets/js/181.1381eb66.js"><link rel="prefetch" href="/assets/js/182.1c6ffcbe.js"><link rel="prefetch" href="/assets/js/183.a2242672.js"><link rel="prefetch" href="/assets/js/184.05c6b496.js"><link rel="prefetch" href="/assets/js/185.d53a108c.js"><link rel="prefetch" href="/assets/js/186.7f0b3736.js"><link rel="prefetch" href="/assets/js/187.0c98292a.js"><link rel="prefetch" href="/assets/js/188.13ef3787.js"><link rel="prefetch" href="/assets/js/189.431e454a.js"><link rel="prefetch" href="/assets/js/19.515d3237.js"><link rel="prefetch" href="/assets/js/190.e9536ae1.js"><link rel="prefetch" href="/assets/js/191.7578a649.js"><link rel="prefetch" href="/assets/js/192.f06a0bb3.js"><link rel="prefetch" href="/assets/js/193.2634e43b.js"><link rel="prefetch" href="/assets/js/194.2f8f9692.js"><link rel="prefetch" href="/assets/js/195.37b5c316.js"><link rel="prefetch" href="/assets/js/196.f74b5771.js"><link rel="prefetch" href="/assets/js/197.8a830504.js"><link rel="prefetch" href="/assets/js/198.8b3b40fa.js"><link rel="prefetch" href="/assets/js/199.5a997f1a.js"><link rel="prefetch" href="/assets/js/20.2dcafbe7.js"><link rel="prefetch" href="/assets/js/200.769dafb0.js"><link rel="prefetch" href="/assets/js/201.5fc74784.js"><link rel="prefetch" href="/assets/js/202.2e9ffcb9.js"><link rel="prefetch" href="/assets/js/203.a4aa2de3.js"><link rel="prefetch" href="/assets/js/204.29836eda.js"><link rel="prefetch" href="/assets/js/205.d2f52cf4.js"><link rel="prefetch" href="/assets/js/206.df1233f8.js"><link rel="prefetch" href="/assets/js/207.c5055c2d.js"><link rel="prefetch" href="/assets/js/208.b11b1b42.js"><link rel="prefetch" href="/assets/js/209.d1451e42.js"><link rel="prefetch" href="/assets/js/21.acbfa763.js"><link rel="prefetch" href="/assets/js/210.1ab6d7d0.js"><link rel="prefetch" href="/assets/js/211.264f55d1.js"><link rel="prefetch" href="/assets/js/212.e4b1b572.js"><link rel="prefetch" href="/assets/js/213.93ca2d15.js"><link rel="prefetch" href="/assets/js/214.674059a0.js"><link rel="prefetch" href="/assets/js/215.9d072093.js"><link rel="prefetch" href="/assets/js/216.3a2d7b28.js"><link rel="prefetch" href="/assets/js/217.7a33d7e9.js"><link rel="prefetch" href="/assets/js/218.f220befa.js"><link rel="prefetch" href="/assets/js/219.cf3483c6.js"><link rel="prefetch" href="/assets/js/22.0d791f94.js"><link rel="prefetch" href="/assets/js/220.c8139870.js"><link rel="prefetch" href="/assets/js/221.4701ab65.js"><link rel="prefetch" href="/assets/js/222.fc56e50f.js"><link rel="prefetch" href="/assets/js/223.d083ee5f.js"><link rel="prefetch" href="/assets/js/224.ab1ed6cb.js"><link rel="prefetch" href="/assets/js/225.e289342d.js"><link rel="prefetch" href="/assets/js/226.71fa94e0.js"><link rel="prefetch" href="/assets/js/227.5c9015a5.js"><link rel="prefetch" href="/assets/js/228.836b6584.js"><link rel="prefetch" href="/assets/js/229.d1291cea.js"><link rel="prefetch" href="/assets/js/23.034996cd.js"><link rel="prefetch" href="/assets/js/230.3ebf9911.js"><link rel="prefetch" href="/assets/js/231.3f92f75d.js"><link rel="prefetch" href="/assets/js/232.491ed5e5.js"><link rel="prefetch" href="/assets/js/233.ad9fb2c4.js"><link rel="prefetch" href="/assets/js/234.e6c92008.js"><link rel="prefetch" href="/assets/js/235.fa4520ff.js"><link rel="prefetch" href="/assets/js/236.3a295dec.js"><link rel="prefetch" href="/assets/js/237.64ec399a.js"><link rel="prefetch" href="/assets/js/238.627264aa.js"><link rel="prefetch" href="/assets/js/239.fb8b0dbf.js"><link rel="prefetch" href="/assets/js/24.73f75877.js"><link rel="prefetch" href="/assets/js/240.f14cafaf.js"><link rel="prefetch" href="/assets/js/241.eebc0b61.js"><link rel="prefetch" href="/assets/js/242.12f93852.js"><link rel="prefetch" href="/assets/js/243.99dba567.js"><link rel="prefetch" href="/assets/js/244.41d248ca.js"><link rel="prefetch" href="/assets/js/245.45b1eb42.js"><link rel="prefetch" href="/assets/js/246.f26d95c2.js"><link rel="prefetch" href="/assets/js/247.ad231c9c.js"><link rel="prefetch" href="/assets/js/248.f090b05c.js"><link rel="prefetch" href="/assets/js/249.a799ce30.js"><link rel="prefetch" href="/assets/js/25.6b7591da.js"><link rel="prefetch" href="/assets/js/250.df9b2583.js"><link rel="prefetch" href="/assets/js/251.a22466c5.js"><link rel="prefetch" href="/assets/js/252.322c13d1.js"><link rel="prefetch" href="/assets/js/253.49410bef.js"><link rel="prefetch" href="/assets/js/254.22529ea2.js"><link rel="prefetch" href="/assets/js/255.ef09110c.js"><link rel="prefetch" href="/assets/js/256.65a4a631.js"><link rel="prefetch" href="/assets/js/257.d313e8ec.js"><link rel="prefetch" href="/assets/js/258.29edab81.js"><link rel="prefetch" href="/assets/js/259.2fa751e7.js"><link rel="prefetch" href="/assets/js/26.bc913725.js"><link rel="prefetch" href="/assets/js/260.2223aefb.js"><link rel="prefetch" href="/assets/js/261.7d431a21.js"><link rel="prefetch" href="/assets/js/262.1fcf1469.js"><link rel="prefetch" href="/assets/js/263.6534d807.js"><link rel="prefetch" href="/assets/js/264.542e2765.js"><link rel="prefetch" href="/assets/js/265.7fbdc730.js"><link rel="prefetch" href="/assets/js/266.645a8ac5.js"><link rel="prefetch" href="/assets/js/267.93a4b283.js"><link rel="prefetch" href="/assets/js/268.d8050f72.js"><link rel="prefetch" href="/assets/js/269.51937449.js"><link rel="prefetch" href="/assets/js/27.81294b57.js"><link rel="prefetch" href="/assets/js/270.374d9d17.js"><link rel="prefetch" href="/assets/js/271.ba585d63.js"><link rel="prefetch" href="/assets/js/272.ef86b944.js"><link rel="prefetch" href="/assets/js/273.c6b08152.js"><link rel="prefetch" href="/assets/js/274.d38e1eda.js"><link rel="prefetch" href="/assets/js/275.431846b3.js"><link rel="prefetch" href="/assets/js/276.cfc8e3d4.js"><link rel="prefetch" href="/assets/js/277.d4ab1733.js"><link rel="prefetch" href="/assets/js/278.89332883.js"><link rel="prefetch" href="/assets/js/28.de5fbffd.js"><link rel="prefetch" href="/assets/js/280.eba000f2.js"><link rel="prefetch" href="/assets/js/281.7fc7da55.js"><link rel="prefetch" href="/assets/js/282.437c3a88.js"><link rel="prefetch" href="/assets/js/283.87615249.js"><link rel="prefetch" href="/assets/js/284.8008a845.js"><link rel="prefetch" href="/assets/js/285.ae7e310d.js"><link rel="prefetch" href="/assets/js/286.e1a21410.js"><link rel="prefetch" href="/assets/js/287.bc2c6bc4.js"><link rel="prefetch" href="/assets/js/288.85e6db69.js"><link rel="prefetch" href="/assets/js/289.536d2f45.js"><link rel="prefetch" href="/assets/js/29.a31435b1.js"><link rel="prefetch" href="/assets/js/290.80b71e26.js"><link rel="prefetch" href="/assets/js/291.6c7015b4.js"><link rel="prefetch" href="/assets/js/292.1786329e.js"><link rel="prefetch" href="/assets/js/293.dd9ac7d5.js"><link rel="prefetch" href="/assets/js/294.c2ccf732.js"><link rel="prefetch" href="/assets/js/295.d2b95f9b.js"><link rel="prefetch" href="/assets/js/296.8b9dc30c.js"><link rel="prefetch" href="/assets/js/297.1609820a.js"><link rel="prefetch" href="/assets/js/298.38e47df8.js"><link rel="prefetch" href="/assets/js/299.98788b55.js"><link rel="prefetch" href="/assets/js/30.60649b66.js"><link rel="prefetch" href="/assets/js/300.3e1d9c73.js"><link rel="prefetch" href="/assets/js/301.3ccd2d48.js"><link rel="prefetch" href="/assets/js/302.050a945f.js"><link rel="prefetch" href="/assets/js/303.011a1812.js"><link rel="prefetch" href="/assets/js/304.87e44bea.js"><link rel="prefetch" href="/assets/js/305.2325d05c.js"><link rel="prefetch" href="/assets/js/306.4971cb6f.js"><link rel="prefetch" href="/assets/js/307.b15e314f.js"><link rel="prefetch" href="/assets/js/308.5b4ab05c.js"><link rel="prefetch" href="/assets/js/309.1d29c1f8.js"><link rel="prefetch" href="/assets/js/31.4b8359e5.js"><link rel="prefetch" href="/assets/js/310.4fec0a37.js"><link rel="prefetch" href="/assets/js/311.09c853ee.js"><link rel="prefetch" href="/assets/js/312.a6dbf843.js"><link rel="prefetch" href="/assets/js/313.bf4eea3f.js"><link rel="prefetch" href="/assets/js/314.e71628c1.js"><link rel="prefetch" href="/assets/js/315.5777dae8.js"><link rel="prefetch" href="/assets/js/316.308fa102.js"><link rel="prefetch" href="/assets/js/317.9753b1aa.js"><link rel="prefetch" href="/assets/js/318.2d6bacae.js"><link rel="prefetch" href="/assets/js/319.dc38fe0a.js"><link rel="prefetch" href="/assets/js/32.8f287f6a.js"><link rel="prefetch" href="/assets/js/320.c5e93576.js"><link rel="prefetch" href="/assets/js/321.3632ab99.js"><link rel="prefetch" href="/assets/js/322.eeef9dc9.js"><link rel="prefetch" href="/assets/js/323.247a426b.js"><link rel="prefetch" href="/assets/js/324.e758aa33.js"><link rel="prefetch" href="/assets/js/325.b85bc432.js"><link rel="prefetch" href="/assets/js/326.711e45f0.js"><link rel="prefetch" href="/assets/js/327.ed93fc3f.js"><link rel="prefetch" href="/assets/js/328.4afbefa1.js"><link rel="prefetch" href="/assets/js/329.9bc00ea6.js"><link rel="prefetch" href="/assets/js/33.d0eafbb9.js"><link rel="prefetch" href="/assets/js/330.603cd7af.js"><link rel="prefetch" href="/assets/js/331.f911307e.js"><link rel="prefetch" href="/assets/js/332.d88722fd.js"><link rel="prefetch" href="/assets/js/333.d817b499.js"><link rel="prefetch" href="/assets/js/334.2cb04046.js"><link rel="prefetch" href="/assets/js/335.2f529c47.js"><link rel="prefetch" href="/assets/js/336.351485be.js"><link rel="prefetch" href="/assets/js/337.2f75ccb6.js"><link rel="prefetch" href="/assets/js/338.6c7d249f.js"><link rel="prefetch" href="/assets/js/339.2dadbadf.js"><link rel="prefetch" href="/assets/js/34.5dfe1291.js"><link rel="prefetch" href="/assets/js/340.70e1cdb9.js"><link rel="prefetch" href="/assets/js/341.e8df0e09.js"><link rel="prefetch" href="/assets/js/342.dc0c2232.js"><link rel="prefetch" href="/assets/js/343.1e5e05d8.js"><link rel="prefetch" href="/assets/js/344.28b81659.js"><link rel="prefetch" href="/assets/js/345.e716023b.js"><link rel="prefetch" href="/assets/js/346.38f415e6.js"><link rel="prefetch" href="/assets/js/347.2e210bce.js"><link rel="prefetch" href="/assets/js/348.7b6d2912.js"><link rel="prefetch" href="/assets/js/349.8fa11060.js"><link rel="prefetch" href="/assets/js/35.5612ab6a.js"><link rel="prefetch" href="/assets/js/350.df5495a8.js"><link rel="prefetch" href="/assets/js/351.a98a4b31.js"><link rel="prefetch" href="/assets/js/352.a9f935a1.js"><link rel="prefetch" href="/assets/js/353.44dae1d6.js"><link rel="prefetch" href="/assets/js/354.a9d1df4e.js"><link rel="prefetch" href="/assets/js/355.847861f1.js"><link rel="prefetch" href="/assets/js/356.29e3e2cd.js"><link rel="prefetch" href="/assets/js/357.359b4fdf.js"><link rel="prefetch" href="/assets/js/358.4739ece9.js"><link rel="prefetch" href="/assets/js/359.20c5d24f.js"><link rel="prefetch" href="/assets/js/36.4e36f97e.js"><link rel="prefetch" href="/assets/js/360.8e0ee870.js"><link rel="prefetch" href="/assets/js/361.9aa30956.js"><link rel="prefetch" href="/assets/js/362.b3bfe78e.js"><link rel="prefetch" href="/assets/js/363.715dceba.js"><link rel="prefetch" href="/assets/js/364.38410be8.js"><link rel="prefetch" href="/assets/js/365.4bac44b6.js"><link rel="prefetch" href="/assets/js/366.46d8d249.js"><link rel="prefetch" href="/assets/js/367.e3bf3b9c.js"><link rel="prefetch" href="/assets/js/368.ee547bda.js"><link rel="prefetch" href="/assets/js/369.736a646d.js"><link rel="prefetch" href="/assets/js/37.13b65e5d.js"><link rel="prefetch" href="/assets/js/370.fe39eb95.js"><link rel="prefetch" href="/assets/js/371.9c126e32.js"><link rel="prefetch" href="/assets/js/372.e0dae98b.js"><link rel="prefetch" href="/assets/js/373.0274b348.js"><link rel="prefetch" href="/assets/js/374.d9a69d22.js"><link rel="prefetch" href="/assets/js/375.f557e778.js"><link rel="prefetch" href="/assets/js/376.cd006148.js"><link rel="prefetch" href="/assets/js/377.9c26b8da.js"><link rel="prefetch" href="/assets/js/378.9b0d8417.js"><link rel="prefetch" href="/assets/js/379.627afaad.js"><link rel="prefetch" href="/assets/js/38.8d2f9b02.js"><link rel="prefetch" href="/assets/js/380.b8af5648.js"><link rel="prefetch" href="/assets/js/381.0a8a939b.js"><link rel="prefetch" href="/assets/js/382.52800db0.js"><link rel="prefetch" href="/assets/js/383.9ad7156f.js"><link rel="prefetch" href="/assets/js/384.cc6909cd.js"><link rel="prefetch" href="/assets/js/385.4717c4e4.js"><link rel="prefetch" href="/assets/js/386.5abf2a09.js"><link rel="prefetch" href="/assets/js/387.8c41c240.js"><link rel="prefetch" href="/assets/js/388.ec31711a.js"><link rel="prefetch" href="/assets/js/389.0371aa7e.js"><link rel="prefetch" href="/assets/js/39.b5f4c79a.js"><link rel="prefetch" href="/assets/js/390.46c5c996.js"><link rel="prefetch" href="/assets/js/391.7169b1ca.js"><link rel="prefetch" href="/assets/js/392.544e05a8.js"><link rel="prefetch" href="/assets/js/393.f1a9248c.js"><link rel="prefetch" href="/assets/js/394.a79ac990.js"><link rel="prefetch" href="/assets/js/395.65fc3afc.js"><link rel="prefetch" href="/assets/js/396.1e0a9079.js"><link rel="prefetch" href="/assets/js/397.63daad80.js"><link rel="prefetch" href="/assets/js/398.99d2729e.js"><link rel="prefetch" href="/assets/js/399.78b25d83.js"><link rel="prefetch" href="/assets/js/4.6547abe4.js"><link rel="prefetch" href="/assets/js/40.f82f0187.js"><link rel="prefetch" href="/assets/js/400.b99a2621.js"><link rel="prefetch" href="/assets/js/401.5a36fa11.js"><link rel="prefetch" href="/assets/js/402.ac36ec5c.js"><link rel="prefetch" href="/assets/js/403.48f0c1a5.js"><link rel="prefetch" href="/assets/js/404.a302d41b.js"><link rel="prefetch" href="/assets/js/405.5d4b9fd4.js"><link rel="prefetch" href="/assets/js/406.1debf893.js"><link rel="prefetch" href="/assets/js/407.b941ea0a.js"><link rel="prefetch" href="/assets/js/408.e6ed7bb5.js"><link rel="prefetch" href="/assets/js/409.723f0d1a.js"><link rel="prefetch" href="/assets/js/41.f483212d.js"><link rel="prefetch" href="/assets/js/410.4fe55f82.js"><link rel="prefetch" href="/assets/js/411.eb9a87dd.js"><link rel="prefetch" href="/assets/js/412.1f502e92.js"><link rel="prefetch" href="/assets/js/413.e6c37b81.js"><link rel="prefetch" href="/assets/js/414.4e532ea2.js"><link rel="prefetch" href="/assets/js/415.b2d0768a.js"><link rel="prefetch" href="/assets/js/416.10e8df3a.js"><link rel="prefetch" href="/assets/js/417.44204f17.js"><link rel="prefetch" href="/assets/js/418.b762928f.js"><link rel="prefetch" href="/assets/js/419.9f2ecef3.js"><link rel="prefetch" href="/assets/js/42.d7b203f7.js"><link rel="prefetch" href="/assets/js/420.7d08ec87.js"><link rel="prefetch" href="/assets/js/421.c5720fce.js"><link rel="prefetch" href="/assets/js/422.45af1ba8.js"><link rel="prefetch" href="/assets/js/423.1c4bd85b.js"><link rel="prefetch" href="/assets/js/424.8896040e.js"><link rel="prefetch" href="/assets/js/425.6f4b9444.js"><link rel="prefetch" href="/assets/js/426.c5d45dec.js"><link rel="prefetch" href="/assets/js/427.fc87af4d.js"><link rel="prefetch" href="/assets/js/428.faf8dc86.js"><link rel="prefetch" href="/assets/js/429.b852d9a2.js"><link rel="prefetch" href="/assets/js/43.8beabf41.js"><link rel="prefetch" href="/assets/js/430.0063b57d.js"><link rel="prefetch" href="/assets/js/431.fd790a83.js"><link rel="prefetch" href="/assets/js/432.5717b71f.js"><link rel="prefetch" href="/assets/js/433.ada34a71.js"><link rel="prefetch" href="/assets/js/434.32e2f3ab.js"><link rel="prefetch" href="/assets/js/435.595fd578.js"><link rel="prefetch" href="/assets/js/436.0f373457.js"><link rel="prefetch" href="/assets/js/437.2f09a47f.js"><link rel="prefetch" href="/assets/js/438.6def2aff.js"><link rel="prefetch" href="/assets/js/439.2d75beb9.js"><link rel="prefetch" href="/assets/js/44.b334ed25.js"><link rel="prefetch" href="/assets/js/440.2b1c02f3.js"><link rel="prefetch" href="/assets/js/441.fb14c67b.js"><link rel="prefetch" href="/assets/js/442.a687139c.js"><link rel="prefetch" href="/assets/js/443.62bae88d.js"><link rel="prefetch" href="/assets/js/444.e07ba35a.js"><link rel="prefetch" href="/assets/js/445.0ec735f6.js"><link rel="prefetch" href="/assets/js/446.e743db8b.js"><link rel="prefetch" href="/assets/js/447.2313121c.js"><link rel="prefetch" href="/assets/js/448.a0ea4e98.js"><link rel="prefetch" href="/assets/js/449.321f485c.js"><link rel="prefetch" href="/assets/js/45.244b7680.js"><link rel="prefetch" href="/assets/js/450.f5b1d6be.js"><link rel="prefetch" href="/assets/js/451.62a9a5c6.js"><link rel="prefetch" href="/assets/js/452.5f184ec1.js"><link rel="prefetch" href="/assets/js/453.92cfed62.js"><link rel="prefetch" href="/assets/js/454.f218ef12.js"><link rel="prefetch" href="/assets/js/455.6b7e901b.js"><link rel="prefetch" href="/assets/js/456.03f1075a.js"><link rel="prefetch" href="/assets/js/457.7c5e7ff7.js"><link rel="prefetch" href="/assets/js/458.8c59a0e5.js"><link rel="prefetch" href="/assets/js/459.ba029fb1.js"><link rel="prefetch" href="/assets/js/46.539f062d.js"><link rel="prefetch" href="/assets/js/460.6996a448.js"><link rel="prefetch" href="/assets/js/461.0ae8a684.js"><link rel="prefetch" href="/assets/js/462.17ff7607.js"><link rel="prefetch" href="/assets/js/463.faed1f11.js"><link rel="prefetch" href="/assets/js/464.35980619.js"><link rel="prefetch" href="/assets/js/465.8073e472.js"><link rel="prefetch" href="/assets/js/466.139d9cfb.js"><link rel="prefetch" href="/assets/js/467.6897a7a0.js"><link rel="prefetch" href="/assets/js/468.197568af.js"><link rel="prefetch" href="/assets/js/469.37615c4d.js"><link rel="prefetch" href="/assets/js/47.13872d6f.js"><link rel="prefetch" href="/assets/js/470.396c017f.js"><link rel="prefetch" href="/assets/js/471.c899d7b7.js"><link rel="prefetch" href="/assets/js/472.58010464.js"><link rel="prefetch" href="/assets/js/473.54437f70.js"><link rel="prefetch" href="/assets/js/474.7bed3dfa.js"><link rel="prefetch" href="/assets/js/475.78aeab9a.js"><link rel="prefetch" href="/assets/js/476.c571add9.js"><link rel="prefetch" href="/assets/js/477.e666f022.js"><link rel="prefetch" href="/assets/js/478.d5917f6d.js"><link rel="prefetch" href="/assets/js/479.57cdf87d.js"><link rel="prefetch" href="/assets/js/48.ad2c2a29.js"><link rel="prefetch" href="/assets/js/480.d2bbf82d.js"><link rel="prefetch" href="/assets/js/481.af496902.js"><link rel="prefetch" href="/assets/js/482.e3aeda85.js"><link rel="prefetch" href="/assets/js/483.d4fff305.js"><link rel="prefetch" href="/assets/js/484.66dfc81e.js"><link rel="prefetch" href="/assets/js/485.1ac2aef2.js"><link rel="prefetch" href="/assets/js/486.535adbd3.js"><link rel="prefetch" href="/assets/js/487.2c778ce3.js"><link rel="prefetch" href="/assets/js/488.738dccf6.js"><link rel="prefetch" href="/assets/js/489.a2e2cd71.js"><link rel="prefetch" href="/assets/js/49.a22d6593.js"><link rel="prefetch" href="/assets/js/490.8c3fed08.js"><link rel="prefetch" href="/assets/js/491.a1f95269.js"><link rel="prefetch" href="/assets/js/492.0b5ee89f.js"><link rel="prefetch" href="/assets/js/493.f1090837.js"><link rel="prefetch" href="/assets/js/494.ee8b8882.js"><link rel="prefetch" href="/assets/js/495.25a30e3d.js"><link rel="prefetch" href="/assets/js/496.0e650ac0.js"><link rel="prefetch" href="/assets/js/497.9d4857a2.js"><link rel="prefetch" href="/assets/js/498.477ee89d.js"><link rel="prefetch" href="/assets/js/499.e19587d4.js"><link rel="prefetch" href="/assets/js/5.2a4451ec.js"><link rel="prefetch" href="/assets/js/50.7d8944cd.js"><link rel="prefetch" href="/assets/js/500.d88874f4.js"><link rel="prefetch" href="/assets/js/501.5793a3de.js"><link rel="prefetch" href="/assets/js/502.a56e4173.js"><link rel="prefetch" href="/assets/js/503.42ed156b.js"><link rel="prefetch" href="/assets/js/504.e917ae58.js"><link rel="prefetch" href="/assets/js/505.ff9b5758.js"><link rel="prefetch" href="/assets/js/506.3eda2eb3.js"><link rel="prefetch" href="/assets/js/507.56ddd2fc.js"><link rel="prefetch" href="/assets/js/508.62b5f8d8.js"><link rel="prefetch" href="/assets/js/509.aeb44074.js"><link rel="prefetch" href="/assets/js/51.eb3d2b62.js"><link rel="prefetch" href="/assets/js/510.45222b28.js"><link rel="prefetch" href="/assets/js/511.c68c3474.js"><link rel="prefetch" href="/assets/js/512.df89f940.js"><link rel="prefetch" href="/assets/js/513.698a487e.js"><link rel="prefetch" href="/assets/js/514.bd6283c9.js"><link rel="prefetch" href="/assets/js/515.c106cce6.js"><link rel="prefetch" href="/assets/js/516.7ede43d0.js"><link rel="prefetch" href="/assets/js/517.bba4286f.js"><link rel="prefetch" href="/assets/js/518.b2f51015.js"><link rel="prefetch" href="/assets/js/519.b810111d.js"><link rel="prefetch" href="/assets/js/52.d8e20165.js"><link rel="prefetch" href="/assets/js/520.3005b300.js"><link rel="prefetch" href="/assets/js/521.01082e56.js"><link rel="prefetch" href="/assets/js/522.0a22a631.js"><link rel="prefetch" href="/assets/js/523.e388e41a.js"><link rel="prefetch" href="/assets/js/524.a4107631.js"><link rel="prefetch" href="/assets/js/525.ce4cf323.js"><link rel="prefetch" href="/assets/js/526.1868daa8.js"><link rel="prefetch" href="/assets/js/527.bd0e7995.js"><link rel="prefetch" href="/assets/js/528.3325a409.js"><link rel="prefetch" href="/assets/js/529.e08466fa.js"><link rel="prefetch" href="/assets/js/53.f69e6824.js"><link rel="prefetch" href="/assets/js/530.fd541834.js"><link rel="prefetch" href="/assets/js/531.055e5f99.js"><link rel="prefetch" href="/assets/js/532.684dd7ce.js"><link rel="prefetch" href="/assets/js/533.776d6bbe.js"><link rel="prefetch" href="/assets/js/534.9a0a18e3.js"><link rel="prefetch" href="/assets/js/535.fa8d53dd.js"><link rel="prefetch" href="/assets/js/536.e02f017b.js"><link rel="prefetch" href="/assets/js/537.f635c6cc.js"><link rel="prefetch" href="/assets/js/538.04c316fb.js"><link rel="prefetch" href="/assets/js/539.7345d273.js"><link rel="prefetch" href="/assets/js/54.28efaf2b.js"><link rel="prefetch" href="/assets/js/540.ad29460e.js"><link rel="prefetch" href="/assets/js/541.9a7bfc26.js"><link rel="prefetch" href="/assets/js/542.450ebc4a.js"><link rel="prefetch" href="/assets/js/543.dc309e37.js"><link rel="prefetch" href="/assets/js/544.1d7a2d6e.js"><link rel="prefetch" href="/assets/js/545.973068a8.js"><link rel="prefetch" href="/assets/js/546.5681758b.js"><link rel="prefetch" href="/assets/js/547.13a628bf.js"><link rel="prefetch" href="/assets/js/548.e8e9f809.js"><link rel="prefetch" href="/assets/js/549.1e1d9382.js"><link rel="prefetch" href="/assets/js/55.5aa8e649.js"><link rel="prefetch" href="/assets/js/550.88c8a36b.js"><link rel="prefetch" href="/assets/js/551.05321f7e.js"><link rel="prefetch" href="/assets/js/552.e75b49bf.js"><link rel="prefetch" href="/assets/js/553.bb81d2dc.js"><link rel="prefetch" href="/assets/js/554.e1c3ef3c.js"><link rel="prefetch" href="/assets/js/555.6d8581c8.js"><link rel="prefetch" href="/assets/js/556.e9cd140e.js"><link rel="prefetch" href="/assets/js/557.781e8a33.js"><link rel="prefetch" href="/assets/js/558.0cd91d34.js"><link rel="prefetch" href="/assets/js/559.69efca6a.js"><link rel="prefetch" href="/assets/js/56.094d588d.js"><link rel="prefetch" href="/assets/js/560.5b33ec09.js"><link rel="prefetch" href="/assets/js/561.c2806e8a.js"><link rel="prefetch" href="/assets/js/562.b810c1fa.js"><link rel="prefetch" href="/assets/js/563.badc3dfc.js"><link rel="prefetch" href="/assets/js/564.bbd10d93.js"><link rel="prefetch" href="/assets/js/565.6dafefee.js"><link rel="prefetch" href="/assets/js/566.49130605.js"><link rel="prefetch" href="/assets/js/567.72cc32db.js"><link rel="prefetch" href="/assets/js/568.57729f3f.js"><link rel="prefetch" href="/assets/js/569.d25da3b8.js"><link rel="prefetch" href="/assets/js/57.ee2a7c80.js"><link rel="prefetch" href="/assets/js/570.537b90a6.js"><link rel="prefetch" href="/assets/js/571.221ab609.js"><link rel="prefetch" href="/assets/js/572.1913d9bc.js"><link rel="prefetch" href="/assets/js/573.42a4c892.js"><link rel="prefetch" href="/assets/js/574.55211f9f.js"><link rel="prefetch" href="/assets/js/575.3145d3cb.js"><link rel="prefetch" href="/assets/js/576.c1574389.js"><link rel="prefetch" href="/assets/js/577.1d196869.js"><link rel="prefetch" href="/assets/js/578.07b16597.js"><link rel="prefetch" href="/assets/js/579.da17389b.js"><link rel="prefetch" href="/assets/js/58.1a08fd99.js"><link rel="prefetch" href="/assets/js/580.cb2cb522.js"><link rel="prefetch" href="/assets/js/581.d442540c.js"><link rel="prefetch" href="/assets/js/582.4132970a.js"><link rel="prefetch" href="/assets/js/583.392c7d32.js"><link rel="prefetch" href="/assets/js/584.bd2e6232.js"><link rel="prefetch" href="/assets/js/585.d6fcde9b.js"><link rel="prefetch" href="/assets/js/586.171861d2.js"><link rel="prefetch" href="/assets/js/587.945dad35.js"><link rel="prefetch" href="/assets/js/588.2753b4c1.js"><link rel="prefetch" href="/assets/js/589.219b82b2.js"><link rel="prefetch" href="/assets/js/59.4c65dd4b.js"><link rel="prefetch" href="/assets/js/590.12755c4d.js"><link rel="prefetch" href="/assets/js/591.212b8ebb.js"><link rel="prefetch" href="/assets/js/592.54c55a47.js"><link rel="prefetch" href="/assets/js/593.f1a82e6d.js"><link rel="prefetch" href="/assets/js/594.8da267ea.js"><link rel="prefetch" href="/assets/js/595.d4a504f0.js"><link rel="prefetch" href="/assets/js/596.e0549527.js"><link rel="prefetch" href="/assets/js/597.35c614c1.js"><link rel="prefetch" href="/assets/js/598.9859fcc1.js"><link rel="prefetch" href="/assets/js/599.e57b0332.js"><link rel="prefetch" href="/assets/js/6.3450075a.js"><link rel="prefetch" href="/assets/js/60.cb1e1f9d.js"><link rel="prefetch" href="/assets/js/600.04832c86.js"><link rel="prefetch" href="/assets/js/601.3b925fa6.js"><link rel="prefetch" href="/assets/js/602.34f828d5.js"><link rel="prefetch" href="/assets/js/603.ace869c8.js"><link rel="prefetch" href="/assets/js/604.cd26cf7f.js"><link rel="prefetch" href="/assets/js/605.9ceb0a56.js"><link rel="prefetch" href="/assets/js/606.c50bf096.js"><link rel="prefetch" href="/assets/js/607.1950c9f3.js"><link rel="prefetch" href="/assets/js/608.755249ba.js"><link rel="prefetch" href="/assets/js/609.f0995753.js"><link rel="prefetch" href="/assets/js/61.b564cb52.js"><link rel="prefetch" href="/assets/js/610.4fe3e2ef.js"><link rel="prefetch" href="/assets/js/611.5f5dbd99.js"><link rel="prefetch" href="/assets/js/612.9558c25f.js"><link rel="prefetch" href="/assets/js/613.9ba93d63.js"><link rel="prefetch" href="/assets/js/614.12c18af9.js"><link rel="prefetch" href="/assets/js/615.4940757a.js"><link rel="prefetch" href="/assets/js/616.d10240b9.js"><link rel="prefetch" href="/assets/js/617.34992aa5.js"><link rel="prefetch" href="/assets/js/618.7207be37.js"><link rel="prefetch" href="/assets/js/619.24cafbc9.js"><link rel="prefetch" href="/assets/js/62.98ff0b1e.js"><link rel="prefetch" href="/assets/js/620.bf7faf11.js"><link rel="prefetch" href="/assets/js/621.2b84b9b4.js"><link rel="prefetch" href="/assets/js/622.51e85c0a.js"><link rel="prefetch" href="/assets/js/623.0dc5366b.js"><link rel="prefetch" href="/assets/js/624.f31c9d05.js"><link rel="prefetch" href="/assets/js/625.3db4805e.js"><link rel="prefetch" href="/assets/js/626.e27ab17d.js"><link rel="prefetch" href="/assets/js/627.dc4e7fd5.js"><link rel="prefetch" href="/assets/js/628.ff533c6f.js"><link rel="prefetch" href="/assets/js/629.36353d86.js"><link rel="prefetch" href="/assets/js/63.25666773.js"><link rel="prefetch" href="/assets/js/630.05039f2c.js"><link rel="prefetch" href="/assets/js/631.3142672a.js"><link rel="prefetch" href="/assets/js/632.c4d4bfc4.js"><link rel="prefetch" href="/assets/js/633.f4abe923.js"><link rel="prefetch" href="/assets/js/634.e9609e11.js"><link rel="prefetch" href="/assets/js/635.d3e509d3.js"><link rel="prefetch" href="/assets/js/636.3f567239.js"><link rel="prefetch" href="/assets/js/637.1dec2176.js"><link rel="prefetch" href="/assets/js/638.429c6c2b.js"><link rel="prefetch" href="/assets/js/639.b0021a8c.js"><link rel="prefetch" href="/assets/js/64.c55d06d1.js"><link rel="prefetch" href="/assets/js/640.ab74d348.js"><link rel="prefetch" href="/assets/js/641.06a3079b.js"><link rel="prefetch" href="/assets/js/65.1b27922a.js"><link rel="prefetch" href="/assets/js/66.320ea065.js"><link rel="prefetch" href="/assets/js/67.1912ef83.js"><link rel="prefetch" href="/assets/js/68.64acbd13.js"><link rel="prefetch" href="/assets/js/69.5a596561.js"><link rel="prefetch" href="/assets/js/7.c5c54fb4.js"><link rel="prefetch" href="/assets/js/70.3e338907.js"><link rel="prefetch" href="/assets/js/71.fa7e3d9d.js"><link rel="prefetch" href="/assets/js/72.5583e44f.js"><link rel="prefetch" href="/assets/js/73.7c237f40.js"><link rel="prefetch" href="/assets/js/74.324df93a.js"><link rel="prefetch" href="/assets/js/75.ec25dd3c.js"><link rel="prefetch" href="/assets/js/76.bed5e688.js"><link rel="prefetch" href="/assets/js/77.5a4f205c.js"><link rel="prefetch" href="/assets/js/78.fe062133.js"><link rel="prefetch" href="/assets/js/79.a131bdfa.js"><link rel="prefetch" href="/assets/js/8.de5c69e7.js"><link rel="prefetch" href="/assets/js/80.c22d6e58.js"><link rel="prefetch" href="/assets/js/81.3f498c92.js"><link rel="prefetch" href="/assets/js/82.d320e104.js"><link rel="prefetch" href="/assets/js/83.4e182ae6.js"><link rel="prefetch" href="/assets/js/84.14176029.js"><link rel="prefetch" href="/assets/js/85.7e58b302.js"><link rel="prefetch" href="/assets/js/86.63ae38db.js"><link rel="prefetch" href="/assets/js/87.5ced5f12.js"><link rel="prefetch" href="/assets/js/88.ae16febe.js"><link rel="prefetch" href="/assets/js/89.7e6efcb0.js"><link rel="prefetch" href="/assets/js/9.281d2080.js"><link rel="prefetch" href="/assets/js/90.45efe6f4.js"><link rel="prefetch" href="/assets/js/91.cc48e56f.js"><link rel="prefetch" href="/assets/js/92.fae0a2de.js"><link rel="prefetch" href="/assets/js/93.38a550cd.js"><link rel="prefetch" href="/assets/js/94.ee0a105a.js"><link rel="prefetch" href="/assets/js/95.de1c6cdf.js"><link rel="prefetch" href="/assets/js/96.a3e40a9f.js"><link rel="prefetch" href="/assets/js/97.9c3d4c05.js"><link rel="prefetch" href="/assets/js/98.40f44799.js"><link rel="prefetch" href="/assets/js/99.b2fe6fa1.js"><link rel="prefetch" href="/assets/js/vendors~docsearch.eff714eb.js"> |
| <link rel="stylesheet" href="/assets/css/0.styles.ccadf850.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/QuickStart/QuickStart.html" class="nav-link">In progress</a></li><li class="dropdown-item"><!----> <a href="/UserGuide/V0.12.x/QuickStart/QuickStart.html" class="nav-link">V0.12.x</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/QuickStart/QuickStart.html" class="nav-link">In progress</a></li><li class="dropdown-item"><!----> <a href="/UserGuide/V0.12.x/QuickStart/QuickStart.html" class="nav-link">V0.12.x</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 © 2021 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.e529006f.js" defer></script><script src="/assets/js/3.76c26675.js" defer></script><script src="/assets/js/279.211a8ff7.js" defer></script> |
| </body> |
| </html> |
