ServerBCPKeepNulls 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 ServerBCPKeepNulls property controls the handling of missing values for all columns that accept NULL and possess a default value constraint when importing data.
语法
object.ServerBCPKeepNulls [= value]
Parts
object
An expression that evaluates to an object in the Applies To listvalue
TRUE or FALSE
Data Type
Boolean
Modifiable
Read/write
Prototype (C/C++)
HRESULT GetServerBCPKeepNulls(LPBOOL pRetVal);
HRESULT SetServerBCPKeepNulls(BOOL NewValue);
注释
If TRUE, NULL is inserted when missing values are encountered in the data file. The default constraint does not supply a value for the column.
If FALSE, the default constraint provides a value for any missing values encountered in the data file. FALSE is the default value.
The ServerBCPKeepNulls property is interpreted only when data is imported and if the UseServerSideBCP property of the BulkCopy object is TRUE.