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It's recommended to use the overwrite option. Overwrite the table data and run a VACUUM command.
To Delete the data from a Managed Delta table, the DROP TABLE command can be used.
If it's an external table, then run a DELETE query on the table and then execute VACUUM with RETAIN HOURS 0
CREATE or REPLACE table can also be used
We do not recommend deleting the files from the underlying storage directly. That can cause issues with the transaction logs
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