[ https://issues.apache.org/jira/browse/IOTDB-1160?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17292661#comment-17292661 ]
Xiangdong Huang commented on IOTDB-1160: ---------------------------------------- +1 for "delete storage group root.a" will do nothing. but for * and * *: The diff of * and * * is clear. The only concern is `select * from root`.... if we differentiate * and * * clearly, then how to process this query statement... > should they the same? "delete storage group root.sg" and "delete storage > group root.sg.*" > ------------------------------------------------------------------------------------------ > > Key: IOTDB-1160 > URL: https://issues.apache.org/jira/browse/IOTDB-1160 > Project: Apache IoTDB > Issue Type: Bug > Affects Versions: 0.11.1 > Reporter: Xiangdong Huang > Priority: Major > Attachments: image-2021-02-19-01-43-40-882.png, > image-2021-02-19-16-14-24-767.png > > > Now, they have the same effect: > !image-2021-02-19-01-43-40-882.png|width=395,height=143! > > - should they be the same? > I think it is dangerous if we have two sgs, root.sg1 and root.sg2, and the > user mistakenly runs `delete storage group root` while he/she just wants to > delete one of them. > - should "*" match multiple levels? > It seems that in other statements, a "*" only match one level. > maybe we can support "**" to match multiple levels. > -- This message was sent by Atlassian Jira (v8.3.4#803005)