AnsiNulls Property

Esta característica se quitará en una versión futura de Microsoft SQL Server. Evite utilizar esta característica en nuevos trabajos de desarrollo y tenga previsto modificar las aplicaciones que actualmente la utilizan.

The AnsiNulls property reports the NULL acceptance behavior for new columns.

Sintaxis

object
.AnsiNulls [=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

Prototype (C/C++)

HRESULT GetAnsiNulls(LPBOOL pRetVal);
HRESULT SetAnsiNulls(BOOL NewValue);

Comentarios

By default, Microsoft SQL Server creates columns that do not accept NULL when the user does not explicitly declare the ability to accept NULL. Further, SQL Server returns TRUE when evaluating the expression NULL = NULL. These default behaviors are nonstandard.

If AnsiNulls is TRUE, new columns accept NULL by default and any comparison of NULL to any other value, including NULL, returns NULL.

The AnsiNulls property affects the way in which NULLs are handled for the user's connection only and overrides any database-specific settings for column creation and NULL comparison.

Applies To:

SQLServer Object