Mysql: Which to use when: drop table, truncate table, delete from table

Question

List the differences between the following MySql commands.

• drop table tablename;
• truncate table tablename;
• delete from

Answer 1

• Drop is deleting the table. I would drop the table if I didn't need it anymore
• "Truncate operations drop and re-create the table, which is much faster than deleting rows one by one, particularly for large tables." - from MySQL manual
• I would use delete to do a delete (of specific rows) with a query.

I rarely "delete" anything from my databases. I generally put a flag column such as deleted as a boolean value. I check for that. If its true, I don't present that data.