Something really horrible like this might work but it would be atrociously
slow and a stored procedure would have to be

vastly superior.



The first subselect is designed to return the min value of cost, and the
second one the first order_ID which matches this minimum value.



The distinct is necessary otherwise one record for each order rather than
for each cod_art value will be returned.



Select Distinct Orders1.Cod_Art,

(Select Min(Orders2.Cost) from Orders Orders2 where
Orders1.Cod_Art=Orders2.Cod_Art),

(Select first 1 Orders3.Order_ID from Orders Orders3 where
Order3.Cod_Art=Orders1.Cod_Art and Orders3.Cost=(Select min(Orders4.Cost)
from Orders Orders4 where Orders4.Cod_Art=Orders3.Cod_art) order by
Orders3.Order_ID ASC )

From Orders Orders1





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



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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