Ok. The parentheses worked. So the moral of the story is. Don't use
model names and put the math in parentheses.

Thanks for the help.
--Andrew

On Sep 11, 11:01 am, "euromark (munich)" <[email protected]>
wrote:
> did you try it this way:
>
> (field1-field2) as foo
>
> maybe you need the parenthesis... not sure though
> but i know that MAX(...) etc works - so that would be my guess
>
> On 11 Sep., 16:01, Andrew Koebbe <[email protected]> wrote:
>
> > Thanks for the suggestion. If I do that it back-ticks the whole thing
>
> > select `x-y` AS `difference` from ...
>
> > putting spaces around the minus sign produces similar errors. Is there
> > a way to remove the back ticks for that field?
>
> > --Andrew
>
> > On Sep 11, 7:44 am, Rick <[email protected]> wrote:
>
> > > Assuming you don't need recursion, try it without the model names,
> > > i.e.
>
> > > 'x-y as difference'
>
> > > Rick
>
> > > On Sep 10, 5:33 pm, Andrew Koebbe <[email protected]> wrote:
>
> > > > I'm trying to do a simple subtraction as a field in a find statment...
>
> > > > ex.
>
> > > > $this->Model->find('all',array(
> > > >   'fields' => array(
> > > >     'Model.x - Model.y as difference'
> > > >   )
> > > > ));
>
> > > > but it's not parsing that correctly.
>
> > > > It's doing "select `Model`.`x - Model.y as difference` from ..."
>
> > > > Am I missing something simple here?
>
> > > > I know I could do the subtraction outside the query, but I want to be
> > > > able to order the query by the result of this subtraction.
>
> > > > Thanks.
> > > > --Andrew
>
>
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