Besonderhede van voorbeeld: 5629149399307462847

English

Using a lock-based concurrency control method, at the REPEATABLE READ isolation mode, the row with ID = 1 would be locked, thus blocking Query 2 until the first transaction was committed or rolled back.

Spanish

Usando control de concurencia mediante bloqueos, al nivel de aislamiento REPEATABLE READ, la fila con id 1 debería bloquearse, bloqueando de ese modo la consulta 2 hasta que la transacción 1 se cometa o deshaga.