Group by Stored Procedure

If I use a group by sp to group by id number, is there any way to get a coup
le of fields in the last entry in the table for that id number. One field is
date so I can use max for that field, but how about the others. In Access y
ou can use Last in a totals
query. Is there a way to do that in sql?Can you post DDL (in the form of CREATE TABLE statments), sample data (in
the form of INSERT statements), and what sample output you're looking for?
I'm having a lot of trouble understanding your requirements from this
description and it will be easier to work with and talk about real data.
"drbobh" <drbobh@.discussions.microsoft.com> wrote in message
news:5E8ABE2B-2928-4B1D-B337-3565508DACFD@.microsoft.com...
> If I use a group by sp to group by id number, is there any way to get a
couple of fields in the last entry in the table for that id number. One
field is date so I can use max for that field, but how about the others. In
Access you can use Last in a totals query. Is there a way to do that in sql?|||It sounds like you're asking for something along these lines:
select
id_num, your_date, other_thing, something_else
from theTable T1
where your_date = (
select max(your_date)
from theTable T2
where T2.id_num = T1.id_num
)
Another way to get the result is
...
where not exists (
select * from Table T2
where T2.id_num = T1.id_num
and T2.your_date > T1.your_date
)
So it's either "get those rows where the date is the latest among all
rows with that id_num value" or "get those rows for which there is no
other row with the same id and a more recent date".
Note that if there are multiple rows with the latest date for a given
id, you will get them all, not just 1 as you would with the Access LAST
aggregate. The Access LAST function is convenient, but something like
it in SQL Server would not guarantee repeatable results and would create
more problems than it solved. I suspect LAST() depends on the order in
which the table rows are accessed, and in SQL Server, that depends on
things other than the indexes and the query.
Steve Kass
Drew University
drbobh wrote:

>If I use a group by sp to group by id number, is there any way to get a couple of f
ields in the last entry in the table for that id number. One field is date so I can
use max for that field, but how about the others. In Access you can use Last in a to
tal
s query. Is there a way to do that in sql?
>|||> In Access you can use Last in a totals query.
> Is there a way to do that in sql?
Maybe. But what would the "last" row be if not the row with the latest date?
If you post DDL for your table and explain what you mean by "last" then we
can help you with the query.
David Portas
SQL Server MVP
--|||Thanks Steve for the solution and the explanation, that's what I was looking
for.
"Steve Kass" wrote:

> It sounds like you're asking for something along these lines:
> select
> id_num, your_date, other_thing, something_else
> from theTable T1
> where your_date = (
> select max(your_date)
> from theTable T2
> where T2.id_num = T1.id_num
> )
> Another way to get the result is
> ...
> where not exists (
> select * from Table T2
> where T2.id_num = T1.id_num
> and T2.your_date > T1.your_date
> )
> So it's either "get those rows where the date is the latest among all
> rows with that id_num value" or "get those rows for which there is no
> other row with the same id and a more recent date".
> Note that if there are multiple rows with the latest date for a given
> id, you will get them all, not just 1 as you would with the Access LAST
> aggregate. The Access LAST function is convenient, but something like
> it in SQL Server would not guarantee repeatable results and would create
> more problems than it solved. I suspect LAST() depends on the order in
> which the table rows are accessed, and in SQL Server, that depends on
> things other than the indexes and the query.
> Steve Kass
> Drew University
> drbobh wrote:
>
als query. Is there a way to do that in sql?[vbcol=seagreen]
>