AnsiNullsStatus Property

В будущей версии Microsoft SQL Server эта возможность будет удалена. Избегайте использования этой возможности в новых разработках и запланируйте изменение существующих приложений, в которых она применяется.

The AnsiNullsStatus property returns TRUE when the database object referenced depends on a table exhibiting SQL-92 NULL handling behavior.

Синтаксис

object
.AnsiNullsStatus

Parts

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

Data Type

Boolean

Modifiable

Read/write when a StoredProcedure2, Trigger2, UserDefinedFunction, or View2 object is created. Read-only when a StoredProcedure, Trigger, or View object is used, or after a StoredProcedure2, Trigger2, UserDefinedFunction, or View2 object is created.

Prototype (C/C++)

HRESULT GetAnsiNullsStatus(LPBOOL pRetVal);

Замечания

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

Database and client connection options override default SQL Server behavior. If the default is overridden, tables created exhibit SQL-92 standard NULL handling and objects that depend upon those tables function as specified by SQL-92.

Примечание.
If an application calls AnsiNullsStatus on an instance of SQL Server version 7.0 with the Table2 object, the constant, SQLDMO_E_SQL80ONLY, and the message "This property or method requires Microsoft SQL Server 2000 or later" are returned.

Applies To: