ZhangYao created KUDU-2908:
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Summary: Implement DEFAULT CURRENT_TIMESTAMP and ON UPDATE
CURRENT_TIMESTAMP for kudu
Key: KUDU-2908
URL: https://issues.apache.org/jira/browse/KUDU-2908
Project: Kudu
Issue Type: New Feature
Reporter: ZhangYao
Implement DEAULT CURRENT_TIMESTAMP and ON UPDATE CURRENT_TIMESTAMP just like in
MYSQL.
Here is the reference.
https://dev.mysql.com/doc/refman/8.0/en/timestamp-initialization.html
This feature can be helpful when user want an automatic timestamp column and
can be used for further TTL.
It works like this:
1. Whether DEFAULT CURRENT_TIMESTAMP is set or ON UPDATE CURRENT_TIMESTAMP is
set, will create a timestamp column for table.
2. If only DEFAULT CURRENT_TIMESTAMP is set, then will get kudu time when
insert.
3. If only ON UPDATE CURRENT_TIMESTAMP is set, then it will have default value
and will update timestamp column when update.
4. If both set, then it will get kudu time when insert and update timestamp
when update.
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