Removes a table definition and all data, indexes, constraints, and permission specifications for that table.
DROP TABLE cannot be used to drop a table referenced by a FOREIGN KEY constraint. The referencing FOREIGN KEY constraint or the referencing table must be dropped first.
When a table is dropped, rules or defaults on it lose their binding, and any constraints associated with it are automatically dropped. If you re-create a table, you must rebind the appropriate rules and defaults, and add all necessary constraints.
You cannot use the DROP TABLE statement on system tables.