What are the differences between the DROP, TRUNCATE, and DELETE methods in GaussDB?

Answer: The differences between the DROP, TRUNCATE, and DELETE methods lie in the deletion speed and scope. The details are as follows:

• The DROP statement can be used to delete an entire table, including the table structure, data, indexes, and permissions.
• The deletion speed of the TRUNCATE statement is medium. The TRUNCATE statement can delete all data in a table but does not delete the table structure.
• The deletion speed of the DELETE statement is the slowest. You can delete data from a table based on conditions, excluding the table structure.