Oracle drop, DELETE, truncate difference

Drop deletes the entire table's datasheet structure. Transaction cannot be rolled back.

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1	drop table test;

Truncate deletes all the data in the table and does not line up. And the transaction cannot be rolled back.

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1	TRUNCATE TABLE test;

Delete is for each row of data. Transactions can be rolled back.

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1	Delete from test where id=1;

Truncate is for full table data, does not do row-by-line operations, and delete is for each row of data. So truncate performance is higher than delete.