CRecordset::SetParamNull
Flags a parameter as Null (specifically having no value) or as non-Null.
void SetParamNull(
int nIndex,
BOOL bNull = TRUE
);
Parameters
nIndex
The zero-based index of the parameter.bNull
If TRUE (the default value), the parameter is flagged as Null. Otherwise, the parameter is flagged as non-Null.
Remarks
Unlike SetFieldNull, you can call SetParamNull before you have opened the recordset.
SetParamNull is typically used with predefined queries (stored procedures).
Requirements
Header: afxdb.h