What is the difference between TRUNCATE and DELETE statements in PostgreSQL?

In PostgreSQL, the TRUNCATE and DELETE statements are both used to remove data from a table, but they have important differences:

• TRUNCATE: This statement removes all data from a table quickly and efficiently, and it does not have the overhead that comes with DELETE statements. TRUNCATE is non-transactional, meaning it cannot be rolled back, and it also resets any sequences associated with the table.
• DELETE: This statement removes data from a table based on a condition or criteria, and it is slower compared to TRUNCATE. DELETE is transactional, meaning it can be rolled back if needed, and it does not reset sequences.

Therefore, if you need to quickly remove all data from a table without the ability to roll back the operation, TRUNCATE is the better option. If you need to remove specific rows based on conditions or if you need the operation to be transactional, then DELETE would be more appropriate.