ÈçºÎͨ¹ýADOʹÓþۺϺ¯ÊýÀ´²éѯ(Êý¾Ý¿âΪACCESS)

_RecordsetPtr CMyAdo::SelectRecord(string &where, string &tablename,string &field, int way )
{
    int ret = 0;
  _RecordsetPtr pset;
CString  sql;
    VARIANT  count;
count.vt = VT_INT;
ret = OpenDB();
if( ret == 1 )
return -1;                    //´´½¨¶ÔÏóʧ°Ü
else if( ret == 2 )
  return -2;                    //Êý¾Ý¿â´ò¿ªÊ§°Ü
try
{

    sql.Format("select count(*) from %s", tablename.c_str() );

    /*if( way == 0 )          //²éѯȫ²¿
{
sql.Format("select  * from %s", tablename.c_str() );
    TRACE("sql = %s\n",sql);
}
else if( way == 1 )      //°´×ֶβéѯ
sql.Format("select %s from %s", field.c_str(), tablename.c_str() );
else if( way == 2 )      //°´Ìõ¼þÈ«²¿²éѯ
{

}
else if( way == 3 )      //°´Ìõ¼þºÍ×Ö¶ÎÁªºÏ²éѯ
{

}*/
pset = m_dbptr->Execute((_bstr_t)sql.GetBuffer(sql.GetLength()),&count,adCmdUnknown);
if( pset != NULL && !pset->ADOEOF )
retu