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https://issues.apache.org/jira/browse/IMPALA-11565?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Baike Xia updated IMPALA-11565:
-------------------------------
Description:
For alter table, *add if not exists column* operation , if the columns already
exist and are of the same type, no operation is performed; If the type is
different, an error is reported.
was:
For kudu table, *add/replace if not exists column* operation , if the columns
already exist and are of the same type, no operation is performed; If the type
is different, an error is reported.
> For alter table, add column operation is optimized
> --------------------------------------------------
>
> Key: IMPALA-11565
> URL: https://issues.apache.org/jira/browse/IMPALA-11565
> Project: IMPALA
> Issue Type: New Feature
> Reporter: Baike Xia
> Assignee: Baike Xia
> Priority: Major
> Fix For: Impala 4.2.0
>
>
> For alter table, *add if not exists column* operation , if the columns
> already exist and are of the same type, no operation is performed; If the
> type is different, an error is reported.
>
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