OK, sorted using:
object=pricelist.pricelisttable_set.extra(where=["""(abs(width - %s))
= ( SELECT Min(Abs(pl.width - %s)) FROM table_pricelisttable pl where
name_id=%s)"""], params=[w, w,d.pricelist_id])[0]
The error was missing in subquery where name_id=%s.
Now it works exactly as should.
Yes, you've right.
If I put = the query will return None !
The only query which return what i want is only raw sql:
select min(abs(width-240)) as m,width from table_pricelisttable where
name_id = 1 group by width order by m limit 1;
than performing the second query to get object.
like:
cursor
> Seems to work now with:
> w=240
> pricelisttable_set.extra(where=["""(table_pricelisttable.width - %s)
> >= ( SELECT Min(Abs(pl.width - %s)) FROM table_pricelisttable pl)
> """], params=[w, w])[0]
I would be very surprised if it works now as described with ">="
rather than "=". It's basically
Thank you Tim,
Seems to work now with:
w=240
pricelisttable_set.extra(where=["""(table_pricelisttable.width - %s)
>= ( SELECT Min(Abs(pl.width - %s)) FROM table_pricelisttable pl)
"""], params=[w, w])[0]
On 7/29/07, Tim Chase <[EMAIL PROTECTED]> wrote:
>
> > In pure sql we can do :
> >
> In pure sql we can do :
> "select min(abs(width-150)) from quote_pricelisttable where name_id =
> 1 and width >= 240-150 and width <=240+150;"
>
> How to make it work properly from django ORM?
Did you try playing with the extra() call I included in my
previous email? It should do what you
On 7/29/07, Tim Chase <[EMAIL PROTECTED]> wrote:
>
> > currently I using filter to find closest match:
> > step=100
> > w=2000 # get it from forms.
> > value=pricelist.pricelisttable_set.filter(width__gte=w-step,width__lte=w+step)[0]
> >
> > The problem is that "step" is different for different
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