How can I implement concurrency control in SQL?
An example of an AI chatbot conversation about implementing concurrency control in SQL.
How can I implement concurrency control in SQL?
You can implement concurrency control in SQL using techniques like locking, timestamps, and optimistic concurrency control.
What are the differences between optimistic and pessimistic concurrency control?
Optimistic concurrency control assumes that conflicts are rare and checks for conflicts before committing, while pessimistic locking prevents conflicts by locking resources.
Can you give me an example of how to use locking in SQL?
Sure! You can use the SELECT ... FOR UPDATE statement to lock rows for updates. This prevents other transactions from modifying them until the lock is released.
What happens if a transaction fails while holding a lock?
If a transaction fails while holding a lock, the lock will be released when the transaction is rolled back, allowing other transactions to proceed.
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