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commit 3ccd7b36b2f81549acecd55d35bb52145c818a83 Author: zhutianci <[email protected]> AuthorDate: Mon Apr 27 18:11:21 2020 +0800 add show child paths. --- .../1-DDL Data Definition Language.md | 19 +++++++++++++++++++ .../1-DDL Data Definition Language.md | 20 ++++++++++++++++++++ 2 files changed, 39 insertions(+) diff --git a/docs/UserGuide/5-Operation Manual/1-DDL Data Definition Language.md b/docs/UserGuide/5-Operation Manual/1-DDL Data Definition Language.md index 61bf416..90d6029 100644 --- a/docs/UserGuide/5-Operation Manual/1-DDL Data Definition Language.md +++ b/docs/UserGuide/5-Operation Manual/1-DDL Data Definition Language.md @@ -165,6 +165,25 @@ The results are shown below respectly: It is worth noting that when the queried path does not exist, the system will return no timeseries. +## Show Child Path + +``` +IoTDB> SHOW CHILD PATHS root.ln +``` + +You will get results be similar to below: + +``` +show child paths root.ln ++------------+ +| child paths| ++------------+ +|root.ln.wf01| +|root.ln.wf02| ++------------+ +Total line number = 2 +It costs 0.012s +``` ## Count Timeseries IoTDB is able to use `COUNT TIMESERIES <Path>` to count the number of timeseries in the path. SQL statements are as follows: diff --git a/docs/zh/UserGuide/5-Operation Manual/1-DDL Data Definition Language.md b/docs/zh/UserGuide/5-Operation Manual/1-DDL Data Definition Language.md index 867f120..d90b029 100644 --- a/docs/zh/UserGuide/5-Operation Manual/1-DDL Data Definition Language.md +++ b/docs/zh/UserGuide/5-Operation Manual/1-DDL Data Definition Language.md @@ -163,6 +163,26 @@ show timeseries root.ln where description contains 'test1' 需要注意的是，当查询路径不存在时，系统会返回0条时间序列。 +## 查看子路径 + +``` +IoTDB> SHOW CHILD PATHS root.ln +``` + +你将获得类似的结果： + +``` +show child paths root.ln ++------------+ +| child paths| ++------------+ +|root.ln.wf01| +|root.ln.wf02| ++------------+ +Total line number = 2 +It costs 0.012s +``` + ## 统计时间序列总数 IoTDB支持使用`COUNT TIMESERIES<Path>`来统计一条路径中的时间序列个数。SQL语句如下所示：
