haimeiguo commented on a change in pull request #2501:
URL: https://github.com/apache/iotdb/pull/2501#discussion_r558243517
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File path: docs/UserGuide/Concept/Data Model and Terminology.md
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@@ -78,7 +80,18 @@ It is worth noting that in the path, root is a reserved
character, which is only
Single quotes are not allowed in the path. If you want to use special
characters such as "." in LayerName, use double quotes. For example,
`root.sg."d.1"."s.1"`.
-> Note: the LayerName of storage group can only be characters, numbers and
underscores.
+The characters supported in LayerName without double quotes are as below:
+
+* Chinese characters '\u2E80' to '\u9FFF'
+* '+', '&', '%', '$', '#', '@', '/', '_', '-', ':'
+* 'A' to 'Z', 'a' to 'z', '0' to '9'
+* '[', ']' (eg. 's[1', 's[1]', s[ab]')
+
+'-' and ':' cannot be the first character.
Review comment:
hi,
root.sg3.+ not supported.
but root.sg3.++ is okay..
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