mysql error : Unknown column in 'field list'

am doing project in c++ using mysql api

i have update query like that

q2<<"UPDATE `dorder` set `ddown_status`= 1 WHERE `Machine ID`= "<<"'"<<xbx4.mid<<"'";

but when i execute it , its says Unknown column 'ddown_status' in 'field list'

but ddown_status coloumn already exisits in dorder table ,
so any idea whats wrong with update query
thanks

[radhakrishna.p]

hai darkc99

please check whether these two columns ddown_status , Machine ID are existed in your database table dorder or not

if not matched replace with exact column names

check it once and let me know the status

[RvSon]

HI,
Check for Upper/Lower letters and
also Check that you are getting value in Where statement too.

ya machine id coloumn also exists and ddown_status too

you can see my another query with machine id works fine
q<<"SELECT * FROM dorder WHERE Machine ID = "<<"'"<<xbx4.mid<<"'";

[radhakrishna.p]

hai darkc99,

can you post the table structure and code once here?

so that we will try to help you out in this regard