当回滚到事务中早先设置的保存点时，IDS将只回滚在设置保存点后由事务记录的所有操作。
When you rollback to a savepoint set earlier in a transaction, IDS just rolls back all the operations logged by the transaction after the savepoint was set.
在回滚保存点时，所有已登录的temp表—数据和模式—都被恢复到设置保存点之前的状态。
On rolling back to a savepoint, all the logged temp tables - data and schema - are restored to their states prior to setting the savepoint.
清单 11 中的示例连接到一个名为 ldb 的本地数据库，设置保存点并在远程数据库上执行操作，然后回滚到保存点。
The example in Listing 11 connects to a local database named ldb, sets savepoints, performs operations on remote databases, and rolls back to a savepoint.
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