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Posted to issues@carbondata.apache.org by "Indhumathi Muthu Murugesh (Jira)" <ji...@apache.org> on 2021/06/10 07:58:00 UTC
[jira] [Resolved] (CARBONDATA-4179) Support renaming of complex
columns(array/struct)
[ https://issues.apache.org/jira/browse/CARBONDATA-4179?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Indhumathi Muthu Murugesh resolved CARBONDATA-4179.
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Fix Version/s: 2.2.0
Resolution: Fixed
> Support renaming of complex columns(array/struct)
> -------------------------------------------------
>
> Key: CARBONDATA-4179
> URL: https://issues.apache.org/jira/browse/CARBONDATA-4179
> Project: CarbonData
> Issue Type: Sub-task
> Reporter: Akshay
> Priority: Major
> Fix For: 2.2.0
>
> Time Spent: 21.5h
> Remaining Estimate: 0h
>
> Complex columns supported for - *array and struct.*
> For schema lets say- *str struct<a:int>* the following points will be considered -
> 1) Rename parent name *str to str2*
> alter table test_rename change str str2 struct<a:int>
>
> 2) Rename child name from *a to b*
> alter table test_rename change str str struct<b:int>
>
> *NOTE-*
> Rename operation fails if the structure of the complex column has been altered. This check ensures the old and new columns are compatible with each other. Meaning the *number of children* and *complex levels* should be unaltered while attempting to rename.
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