sql = "select DEEP from pvesseln where PFILENO = 100001";
qryNew->Close();
qryNew->SQL->Clear();
qryNew->SQL->Add(sql);
qryNew->Open();
float temp = qryNew->FieldByName("DEEP")->AsFloat;
得出来的temp不是数据库中的值!!!
sql = "select DEEP from pvesseln where PFILENO = 100001";
qryNew->Close();
qryNew->SQL->Clear();
qryNew->SQL->Add(sql);
qryNew->Open();
float temp = qryNew->FieldByName("DEEP")->AsFloat;
得出来的temp不是数据库中的值!!!