ado中
int x;
strSQL1.Format("UPDATE UserInfor SET jine = jine-x WHERE kahao='%s'",kahaovar);
m_pConnection->Execute((_bstr_t)strSQL1,&RecordsAffected,adCmdText);
为什么不能啊,怎么才能解决
补:
strSQL1.Format("UPDATE UserInfor SET jine = jine-100 WHERE kahao='%s'",kahaovar);
m_pConnection->Execute((_bstr_t)strSQL1,&RecordsAffected,adCmdText);
这个行
int x;
strSQL1.Format("UPDATE UserInfor SET jine = jine-x WHERE kahao='%s'",kahaovar);
m_pConnection->Execute((_bstr_t)strSQL1,&RecordsAffected,adCmdText);
为什么不能啊,怎么才能解决
补:
strSQL1.Format("UPDATE UserInfor SET jine = jine-100 WHERE kahao='%s'",kahaovar);
m_pConnection->Execute((_bstr_t)strSQL1,&RecordsAffected,adCmdText);
这个行
strSQL1.Format("UPDATE UserInfor SET jine = jine-"x” WHERE kahao='%s'",kahaovar);
我的本意就是想:
double aa=100;
strSQL1=" UPDATE UserInfor SET jine ="+aa+" WHERE kahao='"+kahaovar+"' ";
把aa值写入字段jine中