DROP
This operation is the fastest among the three. It's extremely fast because it doesn't log individual row deletions.
It removes an entire table along with its data and associated objects, such as indexes and triggers.
This is typically done when you no longer need the table or want to start fresh.
If you need to remove a large dataset without regard for data recovery, DROP is a good choice.
TRUNCATE
Truncate is generally faster than DELETE but slower than DROP.
It removes all the rows from a table, but unlike DROP, it keeps the table structure intact.
Truncate also doesn't log individual row deletions, which makes it faster than DELETE.
DELETE
This is the slowest of the three options.
It removes rows one by one, generates individual delete statements for each row, and logs each deletion operation.
This can be slower, especially for large datasets.
You can use DELETE within transactions to ensure data consistency.
It's convenient when maintaining referential integrity or performing complex data deletions.