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When a column is deleted:
Rename it as DELETED...
Keep a record in the audit trail, like the others,
Delete it when we purge this record of the audit trail.
However, in some circumstances, customers delete the columns themselves. In this situation:
When they reach the record to be purged from the audit trail,
The DROP COLUMN can't be executed,
Therefore the record is never purged from the audit trail, and no operation can pass, so they can't edit their spreadsheets anymore.
Let's recover from this error.
When a column is deleted:
Rename it as DELETED...
Keep a record in the audit trail, like the others,
Delete it when we purge this record of the audit trail.
However, in some circumstances, customers delete the columns themselves. In this situation:
When they reach the record to be purged from the audit trail,
The DROP COLUMN can't be executed,
Therefore the record is never purged from the audit trail, and no operation can pass, so they can't edit their spreadsheets anymore.
Let's recover from this error.