Syntax not checked, but idea :
select
orders1.cod_art,
min(MinCost),
( select first 1 orders2.order_id from orders orders2
where
orders2.cod_art = orders1.cod_art order by mincost asc
) ///subselect returns first 1 order_id with cod_art =
order1.cod_art and min(mincost)
from
orders orders1
group by orders1.cod_art;


Adomas



The problem with this is that the subselect effectively creates an extra
field in the query, and this field

is not an aggregate function or contained in the group by list, so you will
get the standard sql error to

this effect.



Using a stored procedure as already suggested seems to be the only way round
this.



Graeme




Alberto Pesce wrote:

>Hi all collaborators,
> Based on the example I need from table orders
>
> order_ID Cod_art Cost
> -------- ------- ----
> 1 1 10
> 2 2 20
> 3 1 15
> 4 3 20
> 5 3 22
>
>this from the query
>
> Cod_art MinCost order_ID
> ------- -------- ---------
> 1 10 1
> 2 20 2
> 3 20 4
>
>Thank very much
> Bye
>
>
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Pagarbiai / Best Regards,
Adomas Urbanavicius
+37068543336



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