Hi,

On Apr 3, 2009, at 10:12 AM, Sushrut Sathe wrote:

> Hi,
> In my table there is no id field,i.e. I have the field with the name
> id_host
> then how to use that field in my application without changing the  
> field
> name.


Assuming you mean Rails, you may have better luck next time asking on  
their list. Try this:

  class ModelName < ActiveRecord::Base
    set_primary_key "id_host"
  end


- Stephen