Because you are only interested in viewing the data, you would prefer to do so anonymously, issue a rollback statement immediately after the call to cover your tracks, as shown in Listing 7.

由于您只对查看数据感兴趣，因此希望以匿名方式执行，在调用之后立即发出一条回滚语句来隐藏您的踪迹，如清单7所示。