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| 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用户手册 (V0.8.x)</span> <!----></p> <!----></section></li><li><section class="sidebar-group collapsable depth-0"><p class="sidebar-heading"><span>0-开始使用</span> <span class="arrow right"></span></p> <!----></section></li><li><section class="sidebar-group collapsable depth-0"><p class="sidebar-heading"><span>1-概述</span> <span class="arrow right"></span></p> <!----></section></li><li><section class="sidebar-group collapsable depth-0"><p class="sidebar-heading"><span>2-基本概念</span> <span class="arrow right"></span></p> <!----></section></li><li><section class="sidebar-group collapsable depth-0"><p class="sidebar-heading"><span>3-操作指南</span> <span class="arrow right"></span></p> <!----></section></li><li><section class="sidebar-group collapsable depth-0"><p class="sidebar-heading"><span>4-系统部署与管理</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文档</span> <span class="arrow down"></span></p> <ul class="sidebar-links sidebar-group-items"><li><a href="/zh/UserGuide/V0.8.x/5-IoTDB SQL Documentation/1-IoTDB Query Statement.html" class="active sidebar-link">IoTDB查询语句</a></li><li><a href="/zh/UserGuide/V0.8.x/5-IoTDB SQL Documentation/2-Reference.html" class="sidebar-link">参考</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-系统工具</span> <span class="arrow right"></span></p> <!----></section></li></ul> </aside> <main class="page"> <div class="content content__default"><h1 id="schema语句"><a href="#schema语句" class="header-anchor">#</a> Schema语句</h1> <ul><li>设置存储组</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 identifier"><span class="token punctuation">`</span>*<span class="token punctuation">`</span></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>创建时间序列语句</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>删除时间序列语句</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>显示所有时间序列语句</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>显示特定时间序列语句</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>显示存储组语句</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="数据管理语句"><a href="#数据管理语句" class="header-anchor">#</a> 数据管理语句</h2> <ul><li>插入记录语句</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>更新记录语句</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>删除记录语句</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>选择记录语句</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语句</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语句</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语句</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="数据库管理语句"><a href="#数据库管理语句" class="header-anchor">#</a> 数据库管理语句</h2> <ul><li>创建用户</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>删除用户</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>创建角色</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>删除角色</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>赋予用户权限</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>赋予角色权限</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>赋予用户角色</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>撤销用户权限</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>撤销角色权限</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>撤销用户角色</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>列出用户</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>列出角色</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>列出权限</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>列出角色权限</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>列出用户权限</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>列出角色权限</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>列出用户角色</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>列出角色用户</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>更新密码</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="功能"><a href="#功能" class="header-anchor">#</a> 功能</h2> <ul><li>COUNT</li></ul> <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> <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> <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> <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> <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> <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> <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> <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> <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"> |
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