PRIMO...
codice:
DELETE [LOW_PRIORITY] [QUICK] table_name[.*] [,table_name[.*] ...]
       FROM table-references
       [WHERE where_definition]
SECONDO....
codice:
DELETE [LOW_PRIORITY] [QUICK]
       FROM table_name[.*], [table_name[.*] ...]
       USING table-references
       [WHERE where_definition]