Cancels any changes made since a savepoint was established. Changes made prior to the savepoint are not undone; they are still pending.
ROLLBACK TO SAVEPOINT [ savepoint-name ]
SQL—Vendor extension to ISO/ANSI SQL grammar.
Sybase—Savepoints are not supported by Adaptive Server Enterprise. To implement similar features in an Adaptive Server Enterprise-compatible manner, you can use nested transactions.
None, but there must have been a corresponding SAVEPOINT within the current transaction.