Works great. Thank you so much!
On Jan 16, 12:41 pm, Frederick Cheung <[email protected]>
wrote:
> On 16 Jan 2009, at 16:34, Herman wrote:
>
>
>
> > That didn't work. I received: ArgumentError: wrong number of arguments
> > (1 for 2)
>
> > I tried something like this and it also didn't work:
> > Product.update_all("test3", :sum => "test"+"test2", :group => "id")
>
> oops, typo, should be Product.update_all "test3 = test+test2"
>
> > I'd imagine I'm not that far off, but I can't figure it out.
>
> > On Jan 16, 6:19 am, Frederick Cheung <[email protected]>
> > wrote:
> >> On 16 Jan 2009, at 10:19, Herman wrote:
>
> >>> Basically what I'm trying to do is get the sum of 2 columns and save
> >>> those results in another. I guess I'm looking to do something like
> >>> this:
> >>> a = Product.find(:all)
> >>> b = Product.sum("test + test2", :group => "id")
> >>> a.test3 = b
> >>> a.save
>
> >>> Obviously that doesn't work, but I'm trying to achieve something
> >>> like
> >>> that. Any suggestions?
>
> >> Product.update "test3 = test+test2" would probably do it.
>
> >> Fred
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