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COMMIT in SQL vs. ROLLBACK in SQL: What's the Difference?

Edited by Huma Saeed || By Sawaira Riaz || Published on February 12, 2024
"COMMIT in SQL finalizes transactions, making changes permanent; ROLLBACK undoes changes, reverting to the state before the transaction."

Key Differences

COMMIT in SQL is used to permanently save all changes made in the current transaction. Conversely, ROLLBACK in SQL undoes all changes made in the current transaction, restoring the database to its previous state.
Sawaira Riaz
Feb 12, 2024
COMMIT finalizes the transaction, ensuring that all operations within it are successfully saved to the database. On the other hand, ROLLBACK is like an undo mechanism, negating the effects of the operations in the transaction.
Sawaira Riaz
Feb 12, 2024
In SQL, COMMIT is crucial for maintaining data integrity by confirming modifications. In contrast, ROLLBACK is essential for error handling, allowing the database to revert to a safe state in case of errors or problems.
Sawaira Riaz
Feb 12, 2024
COMMIT is used when the operations are correct and should be made permanent. ROLLBACK, however, is used in situations where the operations need to be discarded, typically in error scenarios or conditional operations.
Harlon Moss
Feb 12, 2024
COMMIT and ROLLBACK both play vital roles in transaction management in SQL, with COMMIT finalizing changes and ROLLBACK providing a safeguard against unwanted modifications.
Aimie Carlson
Feb 12, 2024
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Comparison Chart

Function

Permanently saves changes made in a transaction.
Undoes changes made in a transaction.
Sawaira Riaz
Feb 12, 2024

Purpose

To finalize and confirm transactions.
To revert to the state before the transaction started.
Huma Saeed
Feb 12, 2024

Usage Scenario

Used when changes are correct and should be permanent.
Used to discard changes, often in error situations.
Sawaira Riaz
Feb 12, 2024

Impact on Data

Makes modifications permanent and irretrievable.
Restores the data to its previous state.
Sawaira Riaz
Feb 12, 2024

Role in Transactions

Indicates successful completion of a transaction.
Indicates cancellation or error in a transaction.
Aimie Carlson
Feb 12, 2024
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COMMIT in SQL and ROLLBACK in SQL Definitions

COMMIT in SQL

COMMIT in SQL is used to save changes made to the database.
After correcting the data, use COMMIT to update the database.
Harlon Moss
Jan 23, 2024

ROLLBACK in SQL

ROLLBACK helps maintain data integrity by undoing errors.
After a mistaken deletion, ROLLBACK restores the original data.
Harlon Moss
Jan 23, 2024

COMMIT in SQL

COMMIT marks the end of a successful transaction block.
After multiple insertions, a COMMIT is used to finalize these actions.
Sawaira Riaz
Jan 23, 2024

ROLLBACK in SQL

ROLLBACK reverts the database to its state before the transaction.
On detecting faulty inserts, execute a ROLLBACK immediately.
Sawaira Riaz
Jan 23, 2024

COMMIT in SQL

COMMIT confirms the execution of SQL statements in a transaction.
Once the update query runs successfully, execute COMMIT.
Sawaira Riaz
Jan 23, 2024

ROLLBACK in SQL

ROLLBACK is used to negate the effects of a transaction.
In case of a system failure, ROLLBACK will revert recent changes.
Sawaira Riaz
Jan 23, 2024

COMMIT in SQL

COMMIT finalizes a transaction, saving all changes.
After inserting records, use COMMIT to save them permanently.
Sawaira Riaz
Jan 23, 2024

ROLLBACK in SQL

ROLLBACK undoes transactions, reverting changes.
If an error occurs, use ROLLBACK to undo the changes.
Sawaira Riaz
Jan 23, 2024

COMMIT in SQL

COMMIT is the SQL command to make data modifications permanent.
To ensure the data is saved, follow the insert operation with a COMMIT.
Sawaira Riaz
Jan 23, 2024

ROLLBACK in SQL

ROLLBACK in SQL cancels all uncommitted changes.
Use ROLLBACK to discard the updates made during the transaction.
Huma Saeed
Jan 23, 2024

FAQs

What does ROLLBACK in SQL do?

ROLLBACK undoes all changes made in the current transaction, reverting to the previous state.
Huma Saeed
Feb 12, 2024

Does COMMIT affect all open transactions?

COMMIT will only affect the current transaction in which it's executed.
Sawaira Riaz
Feb 12, 2024

In what scenarios is ROLLBACK used?

ROLLBACK is used when you need to undo transactions, often after encountering errors.
Aimie Carlson
Feb 12, 2024

Does ROLLBACK affect SELECT statements?

No, ROLLBACK only affects operations that modify data.
Harlon Moss
Feb 12, 2024

What is COMMIT in SQL?

COMMIT is a SQL command used to permanently save changes made during a transaction.
Sawaira Riaz
Feb 12, 2024

What happens if I don't use COMMIT?

If you don't use COMMIT, the changes made in the transaction will not be saved permanently.
Janet White
Feb 12, 2024

When should I use COMMIT?

Use COMMIT after a set of SQL operations when you want the changes to be permanent.
Sawaira Riaz
Feb 12, 2024

Is COMMIT reversible in SQL?

No, COMMIT is permanent and not reversible.
Harlon Moss
Feb 12, 2024

Does ROLLBACK remove the transaction from logs?

No, it reverts changes but the transaction may still be recorded in logs.
Harlon Moss
Feb 12, 2024

Can I use COMMIT in a SELECT statement?

No, COMMIT is not used with SELECT as it doesn't modify data.
Janet White
Feb 12, 2024

Can ROLLBACK be partial in SQL?

Typically, ROLLBACK is not partial; it undoes all changes in the transaction.
Harlon Moss
Feb 12, 2024

Can ROLLBACK be used to undo COMMIT?

No, once COMMIT is executed, ROLLBACK cannot undo its changes.
Sawaira Riaz
Feb 12, 2024

Is COMMIT necessary after every SQL command?

No, COMMIT is typically used after a batch of related operations, not necessarily after every single command.
Sawaira Riaz
Feb 12, 2024

Can I use ROLLBACK after COMMIT?

No, once changes are committed, they cannot be rolled back.
Janet White
Feb 12, 2024

Is COMMIT required in auto-commit mode?

In auto-commit mode, each statement is automatically committed, so explicit COMMIT is not necessary.
Sawaira Riaz
Feb 12, 2024

Is COMMIT transaction-specific in SQL?

Yes, COMMIT applies to the specific transaction in which it is executed.
Sawaira Riaz
Feb 12, 2024

How does ROLLBACK work in nested transactions?

ROLLBACK reverts the entire transaction, including all nested transactions.
Sawaira Riaz
Feb 12, 2024

Does ROLLBACK work with DDL statements?

ROLLBACK typically does not work with DDL statements as these are auto-committed.
Janet White
Feb 12, 2024

Can COMMIT be used in a transaction that has errors?

It's not advisable as COMMIT will make all changes, including erroneous ones, permanent.
Sawaira Riaz
Feb 12, 2024

How does ROLLBACK affect database performance?

ROLLBACK can impact performance as it requires undoing changes, which might be resource-intensive.
Sawaira Riaz
Feb 12, 2024
About Author
Written by
Sawaira Riaz
Sawaira is a dedicated content editor at difference.wiki, where she meticulously refines articles to ensure clarity and accuracy. With a keen eye for detail, she upholds the site's commitment to delivering insightful and precise content.
Edited by
Huma Saeed
Huma is a renowned researcher acclaimed for her innovative work in Difference Wiki. Her dedication has led to key breakthroughs, establishing her prominence in academia. Her contributions continually inspire and guide her field.

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