Concurrent Debit Without Loss
Several operations concurrently debit 100 from account id = 1 in accounts. Write one statement that reduces balance only if enough money is available and never lets the balance go below 0.
Logáil isteach chun stair na n-aighneachtaí a fheiceáil
Logáil isteachLogáil isteach chun an Meantóir IS a úsáid
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