17 lines
280 B
MySQL
17 lines
280 B
MySQL
|
SET TRANSACTION ISOLATION LEVEL REPEATABLE READ;
|
||
|
|
|
||
|
|
BEGIN TRANSACTION T1
|
||
|
|
SELECT
|
||
|
|
SUM(Cena)
|
||
|
|
FROM
|
||
|
|
Wycieczki
|
||
|
|
-- STEP 1 RUN ABOVE
|
||
|
|
|
||
|
|
UPDATE Bilety
|
||
|
|
SET cena = cena * 2
|
||
|
|
WHERE
|
||
|
|
kraj = 'Ateny'
|
||
|
|
-- STEP 3 RUN BETWEEN 1 AND 3
|
||
|
|
|
||
|
|
COMMIT TRANSACTION T1
|