--
-- Transakcje
--

START TRANSACTION; 
SELECT balance FROM checking WHERE customer_id = 10233276; 
UPDATE checking SET balance = balance - 200.00 WHERE customer_id = 10233276; 
UPDATE savings  SET balance = balance + 200.00 WHERE customer_id = 10233276; 
COMMIT;


START TRANSACTION; 
UPDATE StockPrice SET close = 45.50 WHERE stock_id = 4 and date = '2020-05-01'; 
UPDATE StockPrice SET close = 19.80 WHERE stock_id = 3 and date = '2020-05-02'; 
COMMIT; 



START TRANSACTION; 
UPDATE StockPrice SET high  = 20.12 WHERE stock_id = 3 and date = '2020-05-02'; 
UPDATE StockPrice SET high  = 47.20 WHERE stock_id = 4 and date = '2020-05-01'; 
COMMIT;
