Rolls back a user-specified transaction to the last savepoint inside the transaction or to the beginning of the transaction.
Transact-SQL Syntax
rollback {transaction | work} [transaction_name | savepoint_name]
ODBC Syntax
ODBC does not support rollback as a SQL command. ECDA Option for ODBC traps the command and monitors the transaction state with the child process. If a transaction is opened, a call to SQL Transact() is generated.