CREATE TABLE [indx_picture] (
    [hash] [bigint] NOT NULL ,
    [fld] [int] NOT NULL 
)
 

// open the table
_RecordsetPtr rset("ADODB.Recordset");
rset->Open( L"indx_picture", (IDispatch*)pConnection, adOpenDynamic, adLockOptimistic, adCmdTable );

FieldsPtr flds = rset->Fields;
for(size_t i =  0 ; i < lstRecord.size(); i++)
{
  word_data &val = lstRecord[i];
  try
  {
     rset->AddNew();
     flds->Item[ L"hash" ]->Value    = 1000L;    /// отлично
// причем в flds->Item[ L"hash" ]->Type лежит adBigInt
     flds->Item[ L"hash" ]->Value    = (__int64) 1000 ; // вот тут сразу вылетает