SQL Transactions and Rollback

Maintain ACID integrity using BEGIN, COMMIT, and ROLLBACK commands.

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A database transaction is a unit of work that is either completed entirely or aborted entirely. If any query inside fails, ROLLBACK undoes all intermediate changes.

Key Takeaways: SQL Transactions and Rollback

Mastering SQL Transactions and Rollback helps you write clean and reliable SQL code. Follow standard conventions, test edge cases, and keep logic simple. Try running the code example below and complete the exercises to build confidence.

SQL Transactions and Rollback Code Example

SQL

START TRANSACTION;
UPDATE accounts SET balance = balance - 500 WHERE id = 1;
UPDATE accounts SET balance = balance + 500 WHERE id = 2;
COMMIT;

Output

Atomically transfers funds between two bank balances

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SQL Transactions and Rollback

💡 Key Takeaways: SQL Transactions and Rollback

SQL Transactions and Rollback Code Example

Key Takeaways: SQL Transactions and Rollback