|Oracle9i SQL Reference
Release 2 (9.2)
Part Number A96540-01
SQL Statements: SAVEPOINT to UPDATE, 2 of 8
SAVEPOINT statement to identify a point in a transaction to which you can later roll back.
Specify the name of the savepoint to be created.
Savepoint names must be distinct within a given transaction. If you create a second savepoint with the same identifier as an earlier savepoint, then the earlier savepoint is erased. After a savepoint has been created, you can either continue processing, commit your work, roll back the entire transaction, or roll back to the savepoint.
Greene's salary in the sample table
hr.employees, check that the total department salary does not exceed 314,000, then reenter
Greene's salary, enter:
UPDATE employees SET salary = 7000 WHERE last_name = 'Banda'; SAVEPOINT banda_sal; UPDATE employees SET salary = 12000 WHERE last_name = 'Greene'; SAVEPOINT greene_sal; SELECT SUM(salary) FROM employees; ROLLBACK TO SAVEPOINT banda_sal; UPDATE employees SET salary = 11000 WHERE last_name = 'Greene'; COMMIT;