共用方式為

  • 發行項

IsComputed Property

未來的 Microsoft SQL Server 版本將移除這項功能。請避免在新的開發工作中使用這項功能，並規劃修改目前使用這項功能的應用程式。

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

語法

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);

備註

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