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IsComputed Property

后续版本的 Microsoft SQL Server 将删除该功能。 请避免在新的开发工作中使用该功能，并着手修改当前还在使用该功能的应用程序。

The IsComputed property reports whether the Column object references a computed Microsoft SQL Server column.

语法

object.IsComputed [=value]

Parts

  • object
    An expression that evaluates to an object in the Applies To list

  • value
    TRUE or FALSE

Data Type

Boolean

Modifiable

Read/write before column creation. Read-only if referencing an existing column.

Prototype (C/C++)

HRESULT GetIsComputed(LPBOOL pRetVal);
HRESULT SetIsComputed(BOOL NewValue);

注释

If TRUE, the referenced column is, or will be created as, a computed column. When creating a computed column, set IsComputed to TRUE and set the ComputedText property to define the column's computed expression.

If FALSE, the Column object references a column that can contain literal values.

Applies To:

Column Object