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https://issues.apache.org/jira/browse/IOTDB-3450?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17558457#comment-17558457
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Guanfei Guo commented on IOTDB-3450:
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According to the discussion in the mail list, we can get the following syntax:
# *\{start, end} - start (included) to end (excluded) layers
# *\{ , end} - 0 to end (excluded) layers
# *\{start, } - start (included) or more layers, ** stands for *\{1, }
# *\{ , } - 0 or more layers, maybe we can use a shortcut (such as ***)?
# *\{n} - exactly n layers, * stands for *\{1}
Is it OK?
> Support new path pattern: 0 or more layers
> ------------------------------------------
>
> Key: IOTDB-3450
> URL: https://issues.apache.org/jira/browse/IOTDB-3450
> Project: Apache IoTDB
> Issue Type: New Feature
> Reporter: Guanfei Guo
> Assignee: 高希鸣
> Priority: Major
> Fix For: 0.13.1
>
>
> Now IoTDB supports the following path patterns:
> # * (1 asterisk) - one layer
> # ** (2 asterisks) - one or more layers
>
> We need to support a new path pattern: 0 or one or more layers, with the
> following syntax:
> *** (3 asterisks) -{color:#172b4d} 0 or one or more layers{color}
>
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