asked on

Access07 - Query to get Last Records Except THE very last record

Hello all

Yesterday I posted a question regarding needing a query to pull all of the last records of every itemID that is ActiveYN = Yes.

My table [t_Dtail] has fields

DetailID, tdate, ItemID, ActiveYN

MGozreh suggested:

SELECT t_Dtail.ItemID, Max(t_Dtail.tdate) AS MaxDate
FROM t_Dtail
WHERE (((t_Dtail.ActiveYN)=True))
GROUP BY t_Dtail.ItemID;

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Capricorn1 suggested:

select a.*
from t_dtail as a
inner join
(select max(b.tdate) as maxtdate, b.itemid
 from t_dtail as b
 group by b.itemid,b.ActiveYN
having b.ActiveYN= true
) as c
on a.itemid = c.itemid  and a.tdate=c.maxtdate

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Both worked.....

HOWEVER. Now I have to modify it
My Fields will now be:
DetailID, InvID, tdate, ItemID, ActiveYN

Now I have to get all of the Last Records for Each [ItemID] Where ActiveYN is True EXCEPT FOR any DetailID that has the LAST [InvID] (which is the Primary Key in another table.

wlwebb

ASKER

I have attempted this code:

SELECT a.*
FROM 
t_Dtail AS z 
INNER JOIN 
(t_dtail AS a 
INNER JOIN 
(SELECT max(b.tdate) AS maxtdate, b.itemid FROM t_dtail AS b 
INNER JOIN 
(SELECT Max(w.InvID) as MaxInvID FROM t_dtail AS w 
GROUP BY b.itemid, b.ActiveYN 
HAVING b.ActiveYN=True)  AS c 
ON (a.tdate = c.maxtdate) AND (a.itemid = c.itemid)) 
ON (a.InvID = w.MaxInvID);

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BUT, it doesn't like the way I write it .. ;-(

Getting an Error on My JOIN clause

I also think I have to have a WHERE clause in there to say to Select a where a.InvID is NOT the z.MaxInvID

Hamed Nasr

Upload an example.
Show the expected output.

wlwebb

ASKER

OK.

Upload

Expected Result is for InvID it would Not use the Max which in this case is
for ItemID

1 - 24
2 - 24
5 - 24
6 - 24

3 - 23
4 - 23

Thus the Max ItemID with ActiveYN of TRUE Excluding the MaxInvID is

1 - 21
2 - 21
3 - 22
4 - 22
5 - 22
6 - 22
EE-Exclude-Max-Rec.accdb

Gozreh

Hi

I'm not sure i understand what you need, but maybe this will help you

SELECT t_Dtail.ItemID, Max(t_Dtail.tdate) AS MaxDate
FROM t_Dtail LEFT JOIN (SELECT Max(t_Dtail.DetailID) AS MaxOfDetailID, t_Dtail.InvID
FROM t_Dtail
GROUP BY t_Dtail.InvID)  AS LastDetail ON t_Dtail.DetailID = LastDetail.MaxOfDetailID
WHERE (((t_Dtail.ActiveYN)=True) AND ((LastDetail.MaxOfDetailID) Is Null))
GROUP BY t_Dtail.ItemID;

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Do you want to remove the last DetailID from the InvID, or the Last InvID from the ItemID ?

M Gozreh

wlwebb

ASKER

nGozreg,,,

Close... I was looking for the Max ItemID for the Max INVID EXCLUDING whatever the MaxInvID is for each ItemID

With ActiveYN=True

So That's remove the Last INVID

Gozreh

Try this

SELECT t_Dtail.ItemID, Max(t_Dtail.tdate) AS MaxDate
FROM t_Dtail LEFT JOIN 
(SELECT Max(t_dtail.InvID) AS MaxInvID, t_dtail.ItemID
FROM t_dtail
WHERE (((t_dtail.ActiveYN)=True))
GROUP BY t_dtail.ItemID)  AS LastInvID 
ON t_Dtail.InvID = LastInvID.MaxInvID
WHERE (((t_Dtail.ActiveYN)=True) AND ((LastInvID.MaxInvID) Is Null))
GROUP BY t_Dtail.ItemID;

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wlwebb

ASKER

CLOSER.....

That gives me the list but when I add t_dtail.[InvID] to the results (which I need) I get all records other than the last record (which I wanted excluded) But I only wanted the LAST (Max) tdate for each InvID (again, excluding the last one)

Hope the above made sense

Seems like you almost have to have two inner joins or left joins (but I REALLY don't know)
One to get the Max date for every INVID then using that MaxDate for Each INVID selecting the Last INVID Excluding the one for Each InvID found in step 1

ASKER CERTIFIED SOLUTION

Gozreh

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wlwebb

ASKER

That was what I was looking for.