CDBVariant

CDBVariant does not have a base class.

A CDBVariant object represents a variant data type for the MFC ODBC classes. CDBVariant is similar to COleVariant; however, CDBVariant does not use OLE. CDBVariant allows you to store a value without worrying about the value’s data type. CDBVariant tracks the data type of the current value, which is stored in a union.

Class CRecordset utilizes CDBVariant objects in three member functions: GetFieldValue, GetBookmark, and SetBookmark. For example, GetFieldValue allows you to dynamically fetch data in a column. Because the data type of the column may not be known at run time, GetFieldValue uses a CDBVariant object to store the column’s data.

#include <afxdb.h>

Class Members |  Hierarchy Chart

See Also   CRecordset, CRecordset::GetFieldValue, CRecordset::GetBookmark, CRecordset::SetBookmark