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https://issues.apache.org/jira/browse/IOTDB-622?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17094143#comment-17094143
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WangChao commented on IOTDB-622:
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Ok, that seems reasonable.
Maybe we could support level=0 to return total number of the database.
> Actually you mean to call the tag name back.
Yes，like tag name on every level, not the whole timeseries.
level seems can't express those sqls:
like root.sgcc.wf03.wt01, but I want to group by sgcc, wt01.
Well, focus on this issue, level is enough, I will try to implement it.
> count all records of the whole database
> ---------------------------------------
>
> Key: IOTDB-622
> URL: https://issues.apache.org/jira/browse/IOTDB-622
> Project: Apache IoTDB
> Issue Type: Improvement
> Components: Core/Engine
> Reporter: WangChao
> Assignee: WangChao
> Priority: Trivial
>
> Now the count function only count the number of every timeseries, it's useful
> to count the total record of the specific path.
>
> like:
>
> *_select count(*) from root.ln._** should return the total number of the
> records in storage group root.ln, but now it returns the number of each
> timeseries which is in root.ln.
>
> Please leave your opinion.
>
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