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AnsiNulls Property

This feature will be removed in a future version of Microsoft SQL Server. Avoid using this feature in new development work, and plan to modify applications that currently use this feature.

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


object
.AnsiNulls [=value]

object

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

value

TRUE or FALSE

Boolean

Read/write

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

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.

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