Remove a table
DROP TABLE [IF EXISTS] [database-name.] table-name
The DROP TABLE statement removes a table added with the CREATE TABLE statement. The name specified is the table name. It is completely removed from the database schema and the disk file. The table can not be recovered. All indexes associated with the table are also deleted.
The DROP TABLE statement does not reduce the size of the database file in the default mode. Empty space in the database is retained for later INSERTs. To remove free space in the database, use the VACUUM command. If AUTOVACUUM mode is enabled for a database, then space will be freed automatically by DROP TABLE.
The optional IF EXISTS clause suppresses the error that would normally result if the table does not exist.