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- BEGIN TRANSACTION;
- SELECT * FROM Renewable_Energy_Devices WHERE device_id = 'Device_1';
- -- Tu należy odczekać chwilę
- -- Transakcja 2
- BEGIN TRANSACTION;
- UPDATE Renewable_Energy_Devices SET device_power = 1000 WHERE device_id = 'Device_1';
- COMMIT;
- -- Kontynuacja transakcji 1
- -- Odczyt ponownie tego samego wiersza
- SELECT * FROM Renewable_Energy_Devices WHERE device_id = 'Device_1';
- COMMIT;
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