(window.webpackJsonp=window.webpackJsonp||[]).push([[507],{1071:function(e,s,a){"use strict";a.r(s);var n=a(68),t=Object(n.a)({},(function(){var e=this,s=e.$createElement,a=e._self._c||s;return a("ContentSlotsDistributor",{attrs:{"slot-key":e.$parent.slotKey}},[a("h1",{attrs:{id:"sql-参考文档"}},[a("a",{staticClass:"header-anchor",attrs:{href:"#sql-参考文档"}},[e._v("#")]),e._v(" SQL 参考文档")]),e._v(" "),a("h2",{attrs:{id:"显示版本号"}},[a("a",{staticClass:"header-anchor",attrs:{href:"#显示版本号"}},[e._v("#")]),e._v(" 显示版本号")]),e._v(" "),a("div",{staticClass:"language-sql line-numbers-mode"},[a("pre",{pre:!0,attrs:{class:"language-sql"}},[a("code",[a("span",{pre:!0,attrs:{class:"token keyword"}},[e._v("show")]),e._v(" version\n")])]),e._v(" "),a("div",{staticClass:"line-numbers-wrapper"},[a("span",{staticClass:"line-number"},[e._v("1")]),a("br")])]),a("div",{staticClass:"language- line-numbers-mode"},[a("pre",{pre:!0,attrs:{class:"language-text"}},[a("code",[e._v("+---------------------------------------------------------------------------+\n|                                                             0.9.3|\n+---------------------------------------------------------------------------+\nIt costs 0.001s\n")])]),e._v(" "),a("div",{staticClass:"line-numbers-wrapper"},[a("span",{staticClass:"line-number"},[e._v("1")]),a("br"),a("span",{staticClass:"line-number"},[e._v("2")]),a("br"),a("span",{staticClass:"line-number"},[e._v("3")]),a("br"),a("span",{staticClass:"line-number"},[e._v("4")]),a("br")])]),a("h2",{attrs:{id:"schema语句"}},[a("a",{staticClass:"header-anchor",attrs:{href:"#schema语句"}},[e._v("#")]),e._v(" Schema语句")]),e._v(" "),a("ul",[a("li",[e._v("设置存储组")])]),e._v(" "),a("div",{staticClass:"language-SQL line-numbers-mode"},[a("pre",{pre:!0,attrs:{class:"language-sql"}},[a("code",[a("span",{pre:!0,attrs:{class:"token keyword"}},[e._v("SET")]),e._v(" STORAGE "),a("span",{pre:!0,attrs:{class:"token keyword"}},[e._v("GROUP")]),e._v(" "),a("span",{pre:!0,attrs:{class:"token keyword"}},[e._v("TO")]),e._v(" "),a("span",{pre:!0,attrs:{class:"token operator"}},[e._v("<")]),e._v("PrefixPath"),a("span",{pre:!0,attrs:{class:"token operator"}},[e._v(">")]),e._v("\nEg: IoTDB "),a("span",{pre:!0,attrs:{class:"token operator"}},[e._v(">")]),e._v(" "),a("span",{pre:!0,attrs:{class:"token keyword"}},[e._v("SET")]),e._v(" STORAGE "),a("span",{pre:!0,attrs:{class:"token keyword"}},[e._v("GROUP")]),e._v(" "),a("span",{pre:!0,attrs:{class:"token keyword"}},[e._v("TO")]),e._v(" root"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[e._v(".")]),e._v("ln"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[e._v(".")]),e._v("wf01"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[e._v(".")]),e._v("wt01\nNote: PrefixPath can "),a("span",{pre:!0,attrs:{class:"token operator"}},[e._v("not")]),e._v(" include "),a("span",{pre:!0,attrs:{class:"token punctuation"}},[e._v("`")]),a("span",{pre:!0,attrs:{class:"token operator"}},[e._v("*")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[e._v("`")]),e._v("\n")])]),e._v(" "),a("div",{staticClass:"line-numbers-wrapper"},[a("span",{staticClass:"line-number"},[e._v("1")]),a("br"),a("span",{staticClass:"line-number"},[e._v("2")]),a("br"),a("span",{staticClass:"line-number"},[e._v("3")]),a("br")])]),a("ul",[a("li",[e._v("删除存储组")])]),e._v(" "),a("div",{staticClass:"language- line-numbers-mode"},[a("pre",{pre:!0,attrs:{class:"language-text"}},[a("code",[e._v("DELETE STORAGE GROUP <PrefixPath> [COMMA <PrefixPath>]*\nEg: IoTDB > DELETE STORAGE GROUP root.ln.wf01.wt01\nEg: IoTDB > DELETE STORAGE GROUP root.ln.wf01.wt01, root.ln.wf01.wt02\nNote: PrefixPath can not include `*`\n")])]),e._v(" "),a("div",{staticClass:"line-numbers-wrapper"},[a("span",{staticClass:"line-number"},[e._v("1")]),a("br"),a("span",{staticClass:"line-number"},[e._v("2")]),a("br"),a("span",{staticClass:"line-number"},[e._v("3")]),a("br"),a("span",{staticClass:"line-number"},[e._v("4")]),a("br")])]),a("ul",[a("li",[e._v("创建时间序列语句")])]),e._v(" "),a("div",{staticClass:"language- line-numbers-mode"},[a("pre",{pre:!0,attrs:{class:"language-text"}},[a("code",[e._v("CREATE TIMESERIES <Timeseries> WITH <AttributeClauses>\nAttributeClauses : DATATYPE=<DataTypeValue> COMMA ENCODING=<EncodingValue> [COMMA <ExtraAttributeClause>]*\nDataTypeValue: BOOLEAN | DOUBLE | FLOAT | INT32 | INT64 | TEXT\nEncodingValue: GORILLA | PLAIN | RLE | TS_2DIFF | REGULAR\nExtraAttributeClause: {\n\tCOMPRESSOR = <CompressorValue>\n\tMAX_POINT_NUMBER = Integer\n}\nCompressorValue: UNCOMPRESSED | SNAPPY\nEg: IoTDB > CREATE TIMESERIES root.ln.wf01.wt01.status WITH DATATYPE=BOOLEAN, ENCODING=PLAIN\nEg: IoTDB > CREATE TIMESERIES root.ln.wf01.wt01.temperature WITH DATATYPE=FLOAT, ENCODING=RLE\nEg: IoTDB > CREATE TIMESERIES root.ln.wf01.wt01.temperature WITH DATATYPE=FLOAT, ENCODING=RLE, COMPRESSOR=SNAPPY, MAX_POINT_NUMBER=3\nNote: Datatype and encoding type must be corresponding. Please check Chapter 3 Encoding Section for details.\n")])]),e._v(" "),a("div",{staticClass:"line-numbers-wrapper"},[a("span",{staticClass:"line-number"},[e._v("1")]),a("br"),a("span",{staticClass:"line-number"},[e._v("2")]),a("br"),a("span",{staticClass:"line-number"},[e._v("3")]),a("br"),a("span",{staticClass:"line-number"},[e._v("4")]),a("br"),a("span",{staticClass:"line-number"},[e._v("5")]),a("br"),a("span",{staticClass:"line-number"},[e._v("6")]),a("br"),a("span",{staticClass:"line-number"},[e._v("7")]),a("br"),a("span",{staticClass:"line-number"},[e._v("8")]),a("br"),a("span",{staticClass:"line-number"},[e._v("9")]),a("br"),a("span",{staticClass:"line-number"},[e._v("10")]),a("br"),a("span",{staticClass:"line-number"},[e._v("11")]),a("br"),a("span",{staticClass:"line-number"},[e._v("12")]),a("br"),a("span",{staticClass:"line-number"},[e._v("13")]),a("br")])]),a("ul",[a("li",[e._v("删除时间序列语句")])]),e._v(" "),a("div",{staticClass:"language- line-numbers-mode"},[a("pre",{pre:!0,attrs:{class:"language-text"}},[a("code",[e._v("DELETE TIMESERIES <PrefixPath> [COMMA <PrefixPath>]*\nEg: IoTDB > DELETE TIMESERIES root.ln.wf01.wt01.status\nEg: IoTDB > DELETE TIMESERIES root.ln.wf01.wt01.status, root.ln.wf01.wt01.temperature\nEg: IoTDB > DELETE TIMESERIES root.ln.wf01.wt01.*\n")])]),e._v(" "),a("div",{staticClass:"line-numbers-wrapper"},[a("span",{staticClass:"line-number"},[e._v("1")]),a("br"),a("span",{staticClass:"line-number"},[e._v("2")]),a("br"),a("span",{staticClass:"line-number"},[e._v("3")]),a("br"),a("span",{staticClass:"line-number"},[e._v("4")]),a("br")])]),a("ul",[a("li",[e._v("显示所有时间序列语句")])]),e._v(" "),a("div",{staticClass:"language- line-numbers-mode"},[a("pre",{pre:!0,attrs:{class:"language-text"}},[a("code",[e._v("SHOW TIMESERIES\nEg: IoTDB > SHOW TIMESERIES\nNote: This statement can only be used in IoTDB Client. 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root.ln.wf01.wt01(timestamp,status) VALUES(NOW(), false)\nEg: IoTDB > INSERT INTO root.ln.wf01.wt01(timestamp,temperature) VALUES(2017-11-01T00:17:00.000+08:00,24.22028)\nEg: IoTDB > INSERT INTO root.ln.wf01.wt01(timestamp, status, temperature) VALUES (1509466680000, false, 20.060787);\nNote: the statement needs to satisfy this constraint: <PrefixPath> + <Path> = <Timeseries>\nNote: The order of Sensor and PointValue need one-to-one correspondence\n")])]),e._v(" 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TIME PrecedenceEqualOperator <TimeValue>\nEg: IoTDB > UPDATE root.ln.wf01.wt01 SET temperature = 23 WHERE time < NOW() and time > 2017-11-1T00:15:00+08:00\nNote: the statement needs to satisfy this constraint: <PrefixPath> + <Path> = <Timeseries>\n")])]),e._v(" "),a("div",{staticClass:"line-numbers-wrapper"},[a("span",{staticClass:"line-number"},[e._v("1")]),a("br"),a("span",{staticClass:"line-number"},[e._v("2")]),a("br"),a("span",{staticClass:"line-number"},[e._v("3")]),a("br"),a("span",{staticClass:"line-number"},[e._v("4")]),a("br"),a("span",{staticClass:"line-number"},[e._v("5")]),a("br"),a("span",{staticClass:"line-number"},[e._v("6")]),a("br"),a("span",{staticClass:"line-number"},[e._v("7")]),a("br"),a("span",{staticClass:"line-number"},[e._v("8")]),a("br"),a("span",{staticClass:"line-number"},[e._v("9")]),a("br")])]),a("ul",[a("li",[e._v("删除记录语句")])]),e._v(" "),a("div",{staticClass:"language- line-numbers-mode"},[a("pre",{pre:!0,attrs:{class:"language-text"}},[a("code",[e._v("DELETE FROM <PrefixPath> [COMMA <PrefixPath>]* WHERE TIME LESSTHAN <TimeValue>\nEg: DELETE FROM root.ln.wf01.wt01.temperature WHERE time < 2017-11-1T00:05:00+08:00\nEg: DELETE FROM root.ln.wf01.wt01.status, root.ln.wf01.wt01.temperature WHERE time < NOW()\nEg: DELETE FROM root.ln.wf01.wt01.* WHERE time < 1509466140000\n")])]),e._v(" "),a("div",{staticClass:"line-numbers-wrapper"},[a("span",{staticClass:"line-number"},[e._v("1")]),a("br"),a("span",{staticClass:"line-number"},[e._v("2")]),a("br"),a("span",{staticClass:"line-number"},[e._v("3")]),a("br"),a("span",{staticClass:"line-number"},[e._v("4")]),a("br")])]),a("ul",[a("li",[e._v("选择记录语句")])]),e._v(" "),a("div",{staticClass:"language- line-numbers-mode"},[a("pre",{pre:!0,attrs:{class:"language-text"}},[a("code",[e._v("SELECT <SelectClause> FROM <FromClause> [WHERE <WhereClause>]?\nSelectClause : <SelectPath> (COMMA <SelectPath>)*\nSelectPath : <FUNCTION> LPAREN <Path> RPAREN | <Path>\nFUNCTION : ‘COUNT’ , ‘MIN_TIME’, ‘MAX_TIME’, ‘MIN_VALUE’, ‘MAX_VALUE’\nFromClause : <PrefixPath> (COMMA <PrefixPath>)?\nWhereClause : <Condition> [(AND | OR) <Condition>]*\nCondition  : <Expression> [(AND | OR) <Expression>]*\nExpression : [NOT | !]? <TimeExpr> | [NOT | !]? <SensorExpr>\nTimeExpr : TIME PrecedenceEqualOperator (<TimeValue> | <RelativeTime>)\nRelativeTimeDurationUnit = Integer ('Y'|'MO'|'W'|'D'|'H'|'M'|'S'|'MS'|'US'|'NS')\nRelativeTime : (now() | <TimeValue>) [(+|-) RelativeTimeDurationUnit]+\nSensorExpr : (<Timeseries> | <Path>) PrecedenceEqualOperator <PointValue>\nEg: IoTDB > SELECT status, temperature FROM root.ln.wf01.wt01 WHERE temperature < 24 and time > 2017-11-1 0:13:00\nEg. IoTDB > SELECT * FROM root\nEg. IoTDB > SELECT * FROM root where time > now() - 5m\nEg. IoTDB > SELECT COUNT(temperature) FROM root.ln.wf01.wt01 WHERE root.ln.wf01.wt01.temperature < 25\nEg. IoTDB > SELECT MIN_TIME(temperature) FROM root.ln.wf01.wt01 WHERE root.ln.wf01.wt01.temperature < 25\nEg. IoTDB > SELECT MAX_TIME(temperature) FROM root.ln.wf01.wt01 WHERE root.ln.wf01.wt01.temperature > 24\nEg. IoTDB > SELECT MIN_VALUE(temperature) FROM root.ln.wf01.wt01 WHERE root.ln.wf01.wt01.temperature > 23\nEg. IoTDB > SELECT MAX_VALUE(temperature) FROM root.ln.wf01.wt01 WHERE root.ln.wf01.wt01.temperature < 25\nNote: the statement needs to satisfy this constraint: <Path>(SelectClause) + <PrefixPath>(FromClause) = <Timeseries>\nNote: If the <SensorExpr>(WhereClause) is started with <Path> and not with ROOT, the statement needs to satisfy this constraint: <PrefixPath>(FromClause) + <Path>(SensorExpr) = <Timeseries>\nNote: In Version 0.7.0, if <WhereClause> includes `OR`, time filter can not be used.\nNote: There must be a space on both sides of the plus and minus operator appearing in the time expression \n")])]),e._v(" "),a("div",{staticClass:"line-numbers-wrapper"},[a("span",{staticClass:"line-number"},[e._v("1")]),a("br"),a("span",{staticClass:"line-number"},[e._v("2")]),a("br"),a("span",{staticClass:"line-number"},[e._v("3")]),a("br"),a("span",{staticClass:"line-number"},[e._v("4")]),a("br"),a("span",{staticClass:"line-number"},[e._v("5")]),a("br"),a("span",{staticClass:"line-number"},[e._v("6")]),a("br"),a("span",{staticClass:"line-number"},[e._v("7")]),a("br"),a("span",{staticClass:"line-number"},[e._v("8")]),a("br"),a("span",{staticClass:"line-number"},[e._v("9")]),a("br"),a("span",{staticClass:"line-number"},[e._v("10")]),a("br"),a("span",{staticClass:"line-number"},[e._v("11")]),a("br"),a("span",{staticClass:"line-number"},[e._v("12")]),a("br"),a("span",{staticClass:"line-number"},[e._v("13")]),a("br"),a("span",{staticClass:"line-number"},[e._v("14")]),a("br"),a("span",{staticClass:"line-number"},[e._v("15")]),a("br"),a("span",{staticClass:"line-number"},[e._v("16")]),a("br"),a("span",{staticClass:"line-number"},[e._v("17")]),a("br"),a("span",{staticClass:"line-number"},[e._v("18")]),a("br"),a("span",{staticClass:"line-number"},[e._v("19")]),a("br"),a("span",{staticClass:"line-number"},[e._v("20")]),a("br"),a("span",{staticClass:"line-number"},[e._v("21")]),a("br"),a("span",{staticClass:"line-number"},[e._v("22")]),a("br"),a("span",{staticClass:"line-number"},[e._v("23")]),a("br"),a("span",{staticClass:"line-number"},[e._v("24")]),a("br")])]),a("ul",[a("li",[e._v("Group By语句")])]),e._v(" "),a("div",{staticClass:"language- line-numbers-mode"},[a("pre",{pre:!0,attrs:{class:"language-text"}},[a("code",[e._v("SELECT <SelectClause> FROM <FromClause> WHERE  <WhereClause> GROUP BY <GroupByClause>\nSelectClause : <Function> [COMMA < Function >]*\nFunction : <AggregationFunction> LPAREN <Path> RPAREN\nFromClause : <PrefixPath>\nWhereClause : <Condition> [(AND | OR) <Condition>]*\nCondition  : <Expression> [(AND | OR) <Expression>]*\nExpression : [NOT | !]? <TimeExpr> | [NOT | !]? <SensorExpr>\nTimeExpr : TIME PrecedenceEqualOperator (<TimeValue> | <RelativeTime>)\nRelativeTimeDurationUnit = Integer ('Y'|'MO'|'W'|'D'|'H'|'M'|'S'|'MS'|'US'|'NS')\nRelativeTime : (now() | <TimeValue>) [(+|-) RelativeTimeDurationUnit]+\nSensorExpr : (<Timeseries> | <Path>) PrecedenceEqualOperator <PointValue>\nGroupByClause : LPAREN <TimeUnit> (COMMA TimeValue)? COMMA <TimeInterval> (COMMA <TimeInterval>)* RPAREN\nTimeUnit : Integer <DurationUnit>\nDurationUnit : \"ms\" | \"s\" | \"m\" | \"h\" | \"d\" | \"w\"\nTimeInterval: LBRACKET <TimeValue> COMMA <TimeValue> RBRACKET\nEg: SELECT COUNT(status), COUNT(temperature) FROM root.ln.wf01.wt01 where temperature < 24 GROUP BY(5m, [1509465720000, 1509466380000])\nEg. SELECT COUNT (status), MAX_VALUE(temperature) FROM root.ln.wf01.wt01 WHERE time < 1509466500000 GROUP BY(5m, 1509465660000, [1509465720000, 1509466380000])\nEg. 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])\nNote: the statement needs to satisfy this constraint: <Path>(SelectClause) + <PrefixPath>(FromClause) = <Timeseries>\nNote: If the <SensorExpr>(WhereClause) is started with <Path> and not with ROOT, the statement needs to satisfy this constraint: <PrefixPath>(FromClause) + <Path>(SensorExpr) = <Timeseries>\nNote: <TimeValue>(TimeInterval) needs to be greater than 0\nNote: First <TimeValue>(TimeInterval) in needs to be smaller than second <TimeValue>(TimeInterval)\n")])]),e._v(" 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"),a("div",{staticClass:"language- line-numbers-mode"},[a("pre",{pre:!0,attrs:{class:"language-text"}},[a("code",[e._v('SELECT <SelectClause> FROM <FromClause> WHERE <WhereClause> FILL <FillClause>\nSelectClause : <Path> [COMMA <Path>]*\nFromClause : < PrefixPath > [COMMA < PrefixPath >]*\nWhereClause : <WhereExpression>\nWhereExpression : TIME EQUAL <TimeValue>\nFillClause : LPAREN <TypeClause> [COMMA <TypeClause>]* RPAREN\nTypeClause : <Int32Clause> | <Int64Clause> | <FloatClause> | <DoubleClause> | <BoolClause> | <TextClause>\nInt32Clause: INT32 LBRACKET (<LinearClause> | <PreviousClause>)  RBRACKET\nInt64Clause: INT64 LBRACKET (<LinearClause> | <PreviousClause>)  RBRACKET\nFloatClause: FLOAT LBRACKET (<LinearClause> | <PreviousClause>)  RBRACKET\nDoubleClause: DOUBLE LBRACKET (<LinearClause> | <PreviousClause>)  RBRACKET\nBoolClause: BOOLEAN LBRACKET (<LinearClause> | <PreviousClause>)  RBRACKET\nTextClause: TEXT LBRACKET (<LinearClause> | <PreviousClause>)  RBRACKET\nPreviousClause : PREVIOUS [COMMA <ValidPreviousTime>]?\nLinearClause : LINEAR [COMMA <ValidPreviousTime> COMMA <ValidBehindTime>]?\nValidPreviousTime, ValidBehindTime: <TimeUnit>\nTimeUnit : Integer <DurationUnit>\nDurationUnit : "ms" | "s" | "m" | "h" | "d" | "w"\nEg: SELECT temperature FROM root.ln.wf01.wt01 WHERE time = 2017-11-01T16:37:50.000 FILL(float[previous, 1m])\nEg: SELECT temperature,status FROM root.ln.wf01.wt01 WHERE time = 2017-11-01T16:37:50.000 FILL (float[linear, 1m, 1m], boolean[previous, 1m])\nEg: 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])\nEg: 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])\nNote: the statement needs to satisfy this constraint: <PrefixPath>(FromClause) + <Path>(SelectClause) = <Timeseries>\nNote: Integer in <TimeUnit> needs to be greater than 0\n')])]),e._v(" "),a("div",{staticClass:"line-numbers-wrapper"},[a("span",{staticClass:"line-number"},[e._v("1")]),a("br"),a("span",{staticClass:"line-number"},[e._v("2")]),a("br"),a("span",{staticClass:"line-number"},[e._v("3")]),a("br"),a("span",{staticClass:"line-number"},[e._v("4")]),a("br"),a("span",{staticClass:"line-number"},[e._v("5")]),a("br"),a("span",{staticClass:"line-number"},[e._v("6")]),a("br"),a("span",{staticClass:"line-number"},[e._v("7")]),a("br"),a("span",{staticClass:"line-number"},[e._v("8")]),a("br"),a("span",{staticClass:"line-number"},[e._v("9")]),a("br"),a("span",{staticClass:"line-number"},[e._v("10")]),a("br"),a("span",{staticClass:"line-number"},[e._v("11")]),a("br"),a("span",{staticClass:"line-number"},[e._v("12")]),a("br"),a("span",{staticClass:"line-number"},[e._v("13")]),a("br"),a("span",{staticClass:"line-number"},[e._v("14")]),a("br"),a("span",{staticClass:"line-number"},[e._v("15")]),a("br"),a("span",{staticClass:"line-number"},[e._v("16")]),a("br"),a("span",{staticClass:"line-number"},[e._v("17")]),a("br"),a("span",{staticClass:"line-number"},[e._v("18")]),a("br"),a("span",{staticClass:"line-number"},[e._v("19")]),a("br"),a("span",{staticClass:"line-number"},[e._v("20")]),a("br"),a("span",{staticClass:"line-number"},[e._v("21")]),a("br"),a("span",{staticClass:"line-number"},[e._v("22")]),a("br"),a("span",{staticClass:"line-number"},[e._v("23")]),a("br"),a("span",{staticClass:"line-number"},[e._v("24")]),a("br")])]),a("ul",[a("li",[e._v("Limit语句")])]),e._v(" "),a("div",{staticClass:"language- line-numbers-mode"},[a("pre",{pre:!0,attrs:{class:"language-text"}},[a("code",[e._v("SELECT <SelectClause> FROM <FromClause> [WHERE <WhereClause>] [LIMIT <LIMITClause>] [SLIMIT <SLIMITClause>]\nSelectClause : [<Path> | Function]+\nFunction : <AggregationFunction> LPAREN <Path> RPAREN\nFromClause : <Path>\nWhereClause : <Condition> [(AND | OR) <Condition>]*\nCondition : <Expression> [(AND | OR) <Expression>]*\nExpression: [NOT|!]?<TimeExpr> | [NOT|!]?<SensorExpr>\nTimeExpr : TIME PrecedenceEqualOperator (<TimeValue> | <RelativeTime>)\nRelativeTimeDurationUnit = Integer ('Y'|'MO'|'W'|'D'|'H'|'M'|'S'|'MS'|'US'|'NS')\nRelativeTime : (now() | <TimeValue>) [(+|-) RelativeTimeDurationUnit]+\nSensorExpr : (<Timeseries>|<Path>) PrecedenceEqualOperator <PointValue>\nLIMITClause : <N> [OFFSETClause]?\nN : NonNegativeInteger\nOFFSETClause : OFFSET <OFFSETValue>\nOFFSETValue : NonNegativeInteger\nSLIMITClause : <SN> [SOFFSETClause]?\nSN : NonNegativeInteger\nSOFFSETClause : SOFFSET <SOFFSETValue>\nSOFFSETValue : NonNegativeInteger\nNonNegativeInteger:= ('+')? Digit+\nEg: IoTDB > SELECT status, temperature FROM root.ln.wf01.wt01 WHERE temperature < 24 and time > 2017-11-1 0:13:00 LIMIT 3 OFFSET 2\nEg. IoTDB > SELECT COUNT (status), MAX_VALUE(temperature) FROM root.ln.wf01.wt01 WHERE time < 1509466500000 GROUP BY(5m, 1509465660000, [1509465720000, 1509466380000]) LIMIT 3\nNote: The order of <LIMITClause> and <SLIMITClause> does not affect the grammatical correctness.\nNote: <SLIMITClause> can only effect in Prefixpath and StarPath.\nNote: <FillClause> can not use <LIMITClause> but not <SLIMITClause>.\n")])]),e._v(" "),a("div",{staticClass:"line-numbers-wrapper"},[a("span",{staticClass:"line-number"},[e._v("1")]),a("br"),a("span",{staticClass:"line-number"},[e._v("2")]),a("br"),a("span",{staticClass:"line-number"},[e._v("3")]),a("br"),a("span",{staticClass:"line-number"},[e._v("4")]),a("br"),a("span",{staticClass:"line-number"},[e._v("5")]),a("br"),a("span",{staticClass:"line-number"},[e._v("6")]),a("br"),a("span",{staticClass:"line-number"},[e._v("7")]),a("br"),a("span",{staticClass:"line-number"},[e._v("8")]),a("br"),a("span",{staticClass:"line-number"},[e._v("9")]),a("br"),a("span",{staticClass:"line-number"},[e._v("10")]),a("br"),a("span",{staticClass:"line-number"},[e._v("11")]),a("br"),a("span",{staticClass:"line-number"},[e._v("12")]),a("br"),a("span",{staticClass:"line-number"},[e._v("13")]),a("br"),a("span",{staticClass:"line-number"},[e._v("14")]),a("br"),a("span",{staticClass:"line-number"},[e._v("15")]),a("br"),a("span",{staticClass:"line-number"},[e._v("16")]),a("br"),a("span",{staticClass:"line-number"},[e._v("17")]),a("br"),a("span",{staticClass:"line-number"},[e._v("18")]),a("br"),a("span",{staticClass:"line-number"},[e._v("19")]),a("br"),a("span",{staticClass:"line-number"},[e._v("20")]),a("br"),a("span",{staticClass:"line-number"},[e._v("21")]),a("br"),a("span",{staticClass:"line-number"},[e._v("22")]),a("br"),a("span",{staticClass:"line-number"},[e._v("23")]),a("br"),a("span",{staticClass:"line-number"},[e._v("24")]),a("br"),a("span",{staticClass:"line-number"},[e._v("25")]),a("br")])]),a("h2",{attrs:{id:"数据库管理语句"}},[a("a",{staticClass:"header-anchor",attrs:{href:"#数据库管理语句"}},[e._v("#")]),e._v(" 数据库管理语句")]),e._v(" "),a("ul",[a("li",[e._v("创建用户")])]),e._v(" "),a("div",{staticClass:"language- line-numbers-mode"},[a("pre",{pre:!0,attrs:{class:"language-text"}},[a("code",[e._v("CREATE USER <userName> <password>;  \nuserName:=identifier  \npassword:=string\nEg: IoTDB > CREATE USER thulab 'pwd';\n")])]),e._v(" "),a("div",{staticClass:"line-numbers-wrapper"},[a("span",{staticClass:"line-number"},[e._v("1")]),a("br"),a("span",{staticClass:"line-number"},[e._v("2")]),a("br"),a("span",{staticClass:"line-number"},[e._v("3")]),a("br"),a("span",{staticClass:"line-number"},[e._v("4")]),a("br")])]),a("ul",[a("li",[e._v("删除用户")])]),e._v(" "),a("div",{staticClass:"language- line-numbers-mode"},[a("pre",{pre:!0,attrs:{class:"language-text"}},[a("code",[e._v("DROP USER <userName>;  \nuserName:=identifier\nEg: IoTDB > DROP USER xiaoming;\n")])]),e._v(" "),a("div",{staticClass:"line-numbers-wrapper"},[a("span",{staticClass:"line-number"},[e._v("1")]),a("br"),a("span",{staticClass:"line-number"},[e._v("2")]),a("br"),a("span",{staticClass:"line-number"},[e._v("3")]),a("br")])]),a("ul",[a("li",[e._v("创建角色")])]),e._v(" "),a("div",{staticClass:"language- line-numbers-mode"},[a("pre",{pre:!0,attrs:{class:"language-text"}},[a("code",[e._v("CREATE ROLE <roleName>; 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SET TTL TO root.group1 3600000\n这个例子展示了如何使得root.group1这个存储组只保留近一个小时的数据，一个小时前的数据会被删除或者进入不可见状态。\n注意: TTLTime 应是毫秒时间戳。一旦TTL被设置，超过TTL时间范围的写入将被拒绝。\n")])]),e._v(" "),a("div",{staticClass:"line-numbers-wrapper"},[a("span",{staticClass:"line-number"},[e._v("1")]),a("br"),a("span",{staticClass:"line-number"},[e._v("2")]),a("br"),a("span",{staticClass:"line-number"},[e._v("3")]),a("br"),a("span",{staticClass:"line-number"},[e._v("4")]),a("br")])]),a("ul",[a("li",[e._v("取消 TTL")])]),e._v(" "),a("div",{staticClass:"language- line-numbers-mode"},[a("pre",{pre:!0,attrs:{class:"language-text"}},[a("code",[e._v("UNSET TTL TO StorageGroupName\nEg. UNSET TTL TO root.group1\n这个例子展示了如何取消存储组root.group1的TTL，这将使得该存储组接受任意时刻的数据。\n")])]),e._v(" "),a("div",{staticClass:"line-numbers-wrapper"},[a("span",{staticClass:"line-number"},[e._v("1")]),a("br"),a("span",{staticClass:"line-number"},[e._v("2")]),a("br"),a("span",{staticClass:"line-number"},[e._v("3")]),a("br")])]),a("ul",[a("li",[e._v("显示 TTL")])]),e._v(" "),a("div",{staticClass:"language- line-numbers-mode"},[a("pre",{pre:!0,attrs:{class:"language-text"}},[a("code",[e._v("SHOW ALL TTL\nSHOW TTL ON StorageGroupNames\nEg.1 SHOW ALL TTL\n这个例子会给出所有存储组的TTL。\nEg.2 SHOW TTL ON root.group1,root.group2,root.group3\n这个例子会显示指定的三个存储组的TTL。\n注意: 没有设置TTL的存储组的TTL将显示为null。\n")])]),e._v(" "),a("div",{staticClass:"line-numbers-wrapper"},[a("span",{staticClass:"line-number"},[e._v("1")]),a("br"),a("span",{staticClass:"line-number"},[e._v("2")]),a("br"),a("span",{staticClass:"line-number"},[e._v("3")]),a("br"),a("span",{staticClass:"line-number"},[e._v("4")]),a("br"),a("span",{staticClass:"line-number"},[e._v("5")]),a("br"),a("span",{staticClass:"line-number"},[e._v("6")]),a("br"),a("span",{staticClass:"line-number"},[e._v("7")]),a("br")])]),a("p",[e._v("注意：当您对某个存储组设置TTL的时候，超过TTL范围的数据将会立即不可见。但由于数据文件可能混合包含处在TTL范围内\n与范围外的数据，同时数据文件可能正在接受查询，数据文件的物理删除不会立即进行。如果你在此时取消或者调大TTL，\n一部分之前不可见的数据可能重新可见，而那些已经被物理删除的数据则将永久丢失。也就是说，TTL操作不会原子性地删除\n对应的数据。因此我们不推荐您频繁修改TTL，除非您能接受该操作带来的一定程度的不可预知性。")]),e._v(" "),a("h1",{attrs:{id:"参考"}},[a("a",{staticClass:"header-anchor",attrs:{href:"#参考"}},[e._v("#")]),e._v(" 参考")]),e._v(" "),a("h2",{attrs:{id:"关键字"}},[a("a",{staticClass:"header-anchor",attrs:{href:"#关键字"}},[e._v("#")]),e._v(" 关键字")]),e._v(" "),a("div",{staticClass:"language- line-numbers-mode"},[a("pre",{pre:!0,attrs:{class:"language-text"}},[a("code",[e._v("Keywords for IoTDB (case insensitive):\nADD, 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\n\nKeywords with special meanings (case insensitive):\n* Data Types: BOOLEAN, DOUBLE, FLOAT, INT32, INT64, TEXT \n* Encoding Methods: BITMAP, DFT, GORILLA, PLAIN, RLE, TS_2DIFF\n* Compression Methods: UNCOMPRESSED, SNAPPY\n* Logical symbol: AND, &, &&, OR, | , ||, NOT, !, TRUE, FALSE\n")])]),e._v(" "),a("div",{staticClass:"line-numbers-wrapper"},[a("span",{staticClass:"line-number"},[e._v("1")]),a("br"),a("span",{staticClass:"line-number"},[e._v("2")]),a("br"),a("span",{staticClass:"line-number"},[e._v("3")]),a("br"),a("span",{staticClass:"line-number"},[e._v("4")]),a("br"),a("span",{staticClass:"line-number"},[e._v("5")]),a("br"),a("span",{staticClass:"line-number"},[e._v("6")]),a("br"),a("span",{staticClass:"line-number"},[e._v("7")]),a("br"),a("span",{staticClass:"line-number"},[e._v("8")]),a("br")])]),a("h2",{attrs:{id:"标识符"}},[a("a",{staticClass:"header-anchor",attrs:{href:"#标识符"}},[e._v("#")]),e._v(" 标识符")]),e._v(" "),a("div",{staticClass:"language- line-numbers-mode"},[a("pre",{pre:!0,attrs:{class:"language-text"}},[a("code",[e._v("QUOTE := '\\'';\nDOT := '.';\nCOLON : ':' ;\nCOMMA := ',' ;\nSEMICOLON := ';' ;\nLPAREN := '(' ;\nRPAREN := ')' ;\nLBRACKET := '[';\nRBRACKET := ']';\nEQUAL := '=' | '==';\nNOTEQUAL := '<>' | '!=';\nLESSTHANOREQUALTO := '<=';\nLESSTHAN := '<';\nGREATERTHANOREQUALTO := '>=';\nGREATERTHAN := '>';\nDIVIDE := '/';\nPLUS := '+';\nMINUS := '-';\nSTAR := '*';\nLetter := 'a'..'z' | 'A'..'Z';\nHexDigit := 'a'..'f' | 'A'..'F';\nDigit := '0'..'9';\nBoolean := TRUE | FALSE | 0 | 1 (case insensitive)\n\n")])]),e._v(" "),a("div",{staticClass:"line-numbers-wrapper"},[a("span",{staticClass:"line-number"},[e._v("1")]),a("br"),a("span",{staticClass:"line-number"},[e._v("2")]),a("br"),a("span",{staticClass:"line-number"},[e._v("3")]),a("br"),a("span",{staticClass:"line-number"},[e._v("4")]),a("br"),a("span",{staticClass:"line-number"},[e._v("5")]),a("br"),a("span",{staticClass:"line-number"},[e._v("6")]),a("br"),a("span",{staticClass:"line-number"},[e._v("7")]),a("br"),a("span",{staticClass:"line-number"},[e._v("8")]),a("br"),a("span",{staticClass:"line-number"},[e._v("9")]),a("br"),a("span",{staticClass:"line-number"},[e._v("10")]),a("br"),a("span",{staticClass:"line-number"},[e._v("11")]),a("br"),a("span",{staticClass:"line-number"},[e._v("12")]),a("br"),a("span",{staticClass:"line-number"},[e._v("13")]),a("br"),a("span",{staticClass:"line-number"},[e._v("14")]),a("br"),a("span",{staticClass:"line-number"},[e._v("15")]),a("br"),a("span",{staticClass:"line-number"},[e._v("16")]),a("br"),a("span",{staticClass:"line-number"},[e._v("17")]),a("br"),a("span",{staticClass:"line-number"},[e._v("18")]),a("br"),a("span",{staticClass:"line-number"},[e._v("19")]),a("br"),a("span",{staticClass:"line-number"},[e._v("20")]),a("br"),a("span",{staticClass:"line-number"},[e._v("21")]),a("br"),a("span",{staticClass:"line-number"},[e._v("22")]),a("br"),a("span",{staticClass:"line-number"},[e._v("23")]),a("br"),a("span",{staticClass:"line-number"},[e._v("24")]),a("br")])]),a("div",{staticClass:"language- line-numbers-mode"},[a("pre",{pre:!0,attrs:{class:"language-text"}},[a("code",[e._v("StringLiteral := ( '\\'' ( ~('\\'') )* '\\'' | '\\\"' ( ~('\\\"') )* '\\\"');\neg. 'abc'\neg. \"abc\"\n")])]),e._v(" "),a("div",{staticClass:"line-numbers-wrapper"},[a("span",{staticClass:"line-number"},[e._v("1")]),a("br"),a("span",{staticClass:"line-number"},[e._v("2")]),a("br"),a("span",{staticClass:"line-number"},[e._v("3")]),a("br")])]),a("div",{staticClass:"language- line-numbers-mode"},[a("pre",{pre:!0,attrs:{class:"language-text"}},[a("code",[e._v("Integer := ('-' | '+')? Digit+;\neg. 123\neg. -222\n")])]),e._v(" "),a("div",{staticClass:"line-numbers-wrapper"},[a("span",{staticClass:"line-number"},[e._v("1")]),a("br"),a("span",{staticClass:"line-number"},[e._v("2")]),a("br"),a("span",{staticClass:"line-number"},[e._v("3")]),a("br")])]),a("div",{staticClass:"language- line-numbers-mode"},[a("pre",{pre:!0,attrs:{class:"language-text"}},[a("code",[e._v("Float := ('-' | '+')? Digit+ DOT Digit+ (('e' | 'E') ('-' | '+')? Digit+)?;\neg. 3.1415\neg. 1.2E10\neg. -1.33\n")])]),e._v(" "),a("div",{staticClass:"line-numbers-wrapper"},[a("span",{staticClass:"line-number"},[e._v("1")]),a("br"),a("span",{staticClass:"line-number"},[e._v("2")]),a("br"),a("span",{staticClass:"line-number"},[e._v("3")]),a("br"),a("span",{staticClass:"line-number"},[e._v("4")]),a("br")])]),a("div",{staticClass:"language- line-numbers-mode"},[a("pre",{pre:!0,attrs:{class:"language-text"}},[a("code",[e._v("Identifier := (Letter | '_') (Letter | Digit | '_' | MINUS)*;\neg. a123\neg. _abc123\n\n")])]),e._v(" "),a("div",{staticClass:"line-numbers-wrapper"},[a("span",{staticClass:"line-number"},[e._v("1")]),a("br"),a("span",{staticClass:"line-number"},[e._v("2")]),a("br"),a("span",{staticClass:"line-number"},[e._v("3")]),a("br"),a("span",{staticClass:"line-number"},[e._v("4")]),a("br")])]),a("h2",{attrs:{id:"常量"}},[a("a",{staticClass:"header-anchor",attrs:{href:"#常量"}},[e._v("#")]),e._v(" 常量")]),e._v(" "),a("div",{staticClass:"language- line-numbers-mode"},[a("pre",{pre:!0,attrs:{class:"language-text"}},[a("code",[e._v("PointValue : Integer | Float | StringLiteral | Boolean\n")])]),e._v(" "),a("div",{staticClass:"line-numbers-wrapper"},[a("span",{staticClass:"line-number"},[e._v("1")]),a("br")])]),a("div",{staticClass:"language- line-numbers-mode"},[a("pre",{pre:!0,attrs:{class:"language-text"}},[a("code",[e._v("TimeValue : Integer | DateTime | ISO8601 | NOW()\nNote: Integer means timestamp type.\n\nDateTime : \neg. 2016-11-16T16:22:33+08:00\neg. 2016-11-16 16:22:33+08:00\neg. 2016-11-16T16:22:33.000+08:00\neg. 2016-11-16 16:22:33.000+08:00\nNote: DateTime Type can support several types, see Chapter 3 Datetime section for details.\n")])]),e._v(" "),a("div",{staticClass:"line-numbers-wrapper"},[a("span",{staticClass:"line-number"},[e._v("1")]),a("br"),a("span",{staticClass:"line-number"},[e._v("2")]),a("br"),a("span",{staticClass:"line-number"},[e._v("3")]),a("br"),a("span",{staticClass:"line-number"},[e._v("4")]),a("br"),a("span",{staticClass:"line-number"},[e._v("5")]),a("br"),a("span",{staticClass:"line-number"},[e._v("6")]),a("br"),a("span",{staticClass:"line-number"},[e._v("7")]),a("br"),a("span",{staticClass:"line-number"},[e._v("8")]),a("br"),a("span",{staticClass:"line-number"},[e._v("9")]),a("br")])]),a("div",{staticClass:"language- line-numbers-mode"},[a("pre",{pre:!0,attrs:{class:"language-text"}},[a("code",[e._v("PrecedenceEqualOperator : EQUAL | NOTEQUAL | LESSTHANOREQUALTO | LESSTHAN | GREATERTHANOREQUALTO | GREATERTHAN\n")])]),e._v(" "),a("div",{staticClass:"line-numbers-wrapper"},[a("span",{staticClass:"line-number"},[e._v("1")]),a("br")])]),a("div",{staticClass:"language- line-numbers-mode"},[a("pre",{pre:!0,attrs:{class:"language-text"}},[a("code",[e._v("Timeseries : ROOT [DOT <LayerName>]* DOT <SensorName>\nLayerName : Identifier\nSensorName : Identifier\neg. root.ln.wf01.wt01.status\neg. root.sgcc.wf03.wt01.temperature\nNote: Timeseries must be start with `root`(case insensitive) and end with sensor name.\n")])]),e._v(" "),a("div",{staticClass:"line-numbers-wrapper"},[a("span",{staticClass:"line-number"},[e._v("1")]),a("br"),a("span",{staticClass:"line-number"},[e._v("2")]),a("br"),a("span",{staticClass:"line-number"},[e._v("3")]),a("br"),a("span",{staticClass:"line-number"},[e._v("4")]),a("br"),a("span",{staticClass:"line-number"},[e._v("5")]),a("br"),a("span",{staticClass:"line-number"},[e._v("6")]),a("br")])]),a("div",{staticClass:"language- line-numbers-mode"},[a("pre",{pre:!0,attrs:{class:"language-text"}},[a("code",[e._v("PrefixPath : ROOT (DOT <LayerName>)*\nLayerName : Identifier | STAR\neg. root.sgcc\neg. root.*\n")])]),e._v(" "),a("div",{staticClass:"line-numbers-wrapper"},[a("span",{staticClass:"line-number"},[e._v("1")]),a("br"),a("span",{staticClass:"line-number"},[e._v("2")]),a("br"),a("span",{staticClass:"line-number"},[e._v("3")]),a("br"),a("span",{staticClass:"line-number"},[e._v("4")]),a("br")])]),a("div",{staticClass:"language- line-numbers-mode"},[a("pre",{pre:!0,attrs:{class:"language-text"}},[a("code",[e._v("Path: (ROOT | <LayerName>) (DOT <LayerName>)* \nLayerName: Identifier | STAR\neg. root.ln.wf01.wt01.status\neg. root.*.wf01.wt01.status\neg. root.ln.wf01.wt01.*\neg. *.wt01.*\neg. *\n")])]),e._v(" "),a("div",{staticClass:"line-numbers-wrapper"},[a("span",{staticClass:"line-number"},[e._v("1")]),a("br"),a("span",{staticClass:"line-number"},[e._v("2")]),a("br"),a("span",{staticClass:"line-number"},[e._v("3")]),a("br"),a("span",{staticClass:"line-number"},[e._v("4")]),a("br"),a("span",{staticClass:"line-number"},[e._v("5")]),a("br"),a("span",{staticClass:"line-number"},[e._v("6")]),a("br"),a("span",{staticClass:"line-number"},[e._v("7")]),a("br")])])])}),[],!1,null,null,null);s.default=t.exports}}]);