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Posted to issues@carbondata.apache.org by "Akshay (Jira)" <ji...@apache.org> on 2021/05/10 08:56:00 UTC
[jira] [Created] (CARBONDATA-4179) Support rename/change datatype
for complex columns
Akshay created CARBONDATA-4179:
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Summary: Support rename/change datatype for complex columns
Key: CARBONDATA-4179
URL: https://issues.apache.org/jira/browse/CARBONDATA-4179
Project: CarbonData
Issue Type: Sub-task
Reporter: Akshay
The following points will be considered for schema lets say- *str struct<a:int>* -
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>
3) Change datatype of *a* from *int to long*
alter table test_rename change str str struct<a:long>
*NOTE*- Renaming and changing datatype both operations should be done without changing the levels of the complex column. For example :
1) int cannot be converted to an array or struct.
2) array cannot be converted to struct and vice-versa
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