这家报纸开辟专栏来讨论世界人口问题。
Also, there should be a special column that indicates whether this patient is actually diseased. A possible scheme would look like Figure 1.而且,还应该有一个专门的列表明这个病人是否真正患病。
Similar partition-based persistence solutions often require that a special column be added to the database schema to identify the partition identifier.而基于分区的类似的持久性解决方案通常都需要向数据库模式添加一个特殊的列来识别分区标识。