Remarks
This data member contains the data type for the value that is currently stored in the CDBVariant object's union data member. Before accessing this union, you must check the value of m_dwType in order to determine which union data member to access. The following table lists the possible values for m_dwType and the corresponding union data member.
| m_dwType | Union data member |
| DBVT_NULL | No union member is valid for access. |
| DBVT_BOOL | m_boolVal |
| DBVT_UCHAR | m_chVal |
| DBVT_SHORT | m_iVal |
| DBVT_LONG | m_lVal |
| DBVT_SINGLE | m_fltVal |
| DBVT_DOUBLE | m_dblVal |
| DBVT_DATE | m_pdate |
| DBVT_STRING | m_pstring |
| DBVT_BINARY | m_pbinary |