In particular, you want to make sure that hidden lookup views, which are only used by back-end code, do not have any click-sortable columns because that is a waste. 特别地,您应该确保隐藏查询视图(仅由后端代码使用)没有任何单击可排序列,因为这完全是一种浪费。
Implicitly hidden columns: For compatibility, this feature eases the adoption of the row change timestamp columns to existing tables and applications. 隐式隐藏列:从兼容性方面来说,这个特性有助于将行修改时间戳列应用到现有表和应用程序。
This support is added using the row identifier ( RID_BIT or RID) built-in function, the ROW CHANGE TOKEN expression, the time-based update detection, and implicitly hidden columns. 这些支持通过行标识符(RIDBIT或RID)内置函数、ROWCHANGETOKEN表达式、基于时间的更新检测和隐式隐藏的列实现。
Implicitly hidden columns are not externalized when implicit column lists are used. 在使用隐式列列表时,隐式隐藏列不会被外部化。
For row change timestamp columns only, if the column is defined with the IMPLICITLY HIDDEN attribute, then it is not externalized when there is an implicit reference to the columns of the table. 对于行修改时间戳列(只针对这种列),如果该列使用IMPLICITLYHIDDEN属性定义,那么当对表列进行隐式引用时,不会对该列执行外部化。
Optionally, you can prevent users from displaying hidden rows or columns by clicking protection on the tools menu, and then by clicking protect sheet. 还可以通过单击“工具”菜单上的“保护”,然后单击“保护工作表”来禁止用户显示隐藏的行或列。
This list has hidden columns or read-only columns that require data but for which no default value has been specified. 此列表包含需要数据但没有指定默认值的隐藏列或只读列。
To use monadic means is difficult to correctly locate hidden water flowing subsided columns. 目前单一探测手段难以准确探测隐伏导水陷落柱。
The practice demonstrated, the methodology of from macroscopic to microscopic, from entirety to locality, efficaciously utilized all sorts of prospecting means, to successively approximate the hidden water flowing subsided columns with accurate positioning. By means of M. 实践证明,这种从宏观到微观,从整体到局部,有效利用各种勘探手段,逐步逼近,能够准确定位隐伏导水陷落柱。
The existing of hidden water flowing subsided columns is major hidden trouble in mine safety in production, is emphasis and nodus in mine flood control. 隐伏导水陷落柱的存在是矿井安全生产的重大隐患,是矿井防治水的重点、难点。