elimina tutti i record dalla tabella
DELETE FROM table_name;
sql elimina dove in
-- Deletes all records where `columnName` matches the values in brackets.
DELETE FROM tableName WHERE columnName IN ('val1', 'val2', 'val3');
elimina tutte le righe dalla tabella
-- Quick, no possible rollback
TRUNCATE TABLE my_table;
-- With rollback
DELETE FROM my_table;
COMMIT;