fbertsch commented on PR #15084:
URL: https://github.com/apache/iceberg/pull/15084#issuecomment-3770548982
@bryanck - could you take a look?
This API is imperfect, since it doesn't allow an undelete of a field that
has been recreated, i.e.:
1. `ALTER TABLE ADD COLUMN x string`
2. `ALTER TABLE DROP COLUMN x`
3. `ALTER TABLE ADD COLUMN x int`
4. `ALTER TABLE DROP COLUMN x`
5. `CALL system.undelete_column('my.iceberg_table', 'x')
The string version of x is unrecoverable. I doubt this is such a large use
case.
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