The SQL SAVEPOINT command is used to mark a point within a transaction where it is possible to ROLLBACK to, instead of rolling back the entire transaction. A SAVEPOINT allows you to divide a transaction into smaller parts and only undo specific parts of the transaction.

The basic syntax of the SAVEPOINT command is as follows:

SAVEPOINT savepoint_name;

Where savepoint_name is a unique identifier for the savepoint command.

For example, consider the following SQL statements:

BEGIN TRANSACTION;
UPDATE employees SET salary = salary * 1.1 WHERE department = 'Sales';
SAVEPOINT before_update_marketing;
UPDATE employees SET salary = salary * 1.2 WHERE department = 'Marketing';
ROLLBACK TO before_update_marketing;
COMMIT;

In this example, a transaction is started using the BEGIN TRANSACTION statement. The UPDATE statement increases the salary of all employees in the Sales department by 10%. A SAVEPOINT named before_update_marketing is created. The next UPDATE statement increases the salary of all employees in the Marketing department by 20%. The ROLLBACK TO before_update_marketing statement is used to undo the changes made by the second UPDATE statement and restore the database to the state it was in before the second UPDATE statement. The COMMIT statement is used to commit the changes made by the first UPDATE statement.

In conclusion, the SAVEPOINT statement in SQL is used to mark a point within a transaction where it is possible to ROLLBACK to, instead of rolling back the entire transaction. The basic syntax of the SAVEPOINT statement is SAVEPOINT savepoint_name;.

Also check WHAT IS GIT ? It’s Easy If You Do It Smart

You can also visite the Git website (https://git-scm.com/)