A、UPDATE stock SET (status = NULL; quantity, price = 0) WHERE item LIKE S%
B、UPDATE stock SET (status, quantity, price) = (NULL, 0, 0) WHERE item LIKE S%
C、UPDATE stock SET status = NULL, SET quantity = 0, SET price = 0 WHERE item LIKE 'S%'
D、UPDATE stock SET (status = NULL), (quantity = 0), (price = 0) WHERE item LIKE S%