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我建立了一个数据库并存储了通行证等信息。现在我正在逐步更新通行证。我编辑了通行证表的 1 列。我可以这样做吗?还是错了?
首先从表中获取max(updateTag),然后执行如下查询
Select serialNo from table where updateTag = <Max update flag obtained in previous query>