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Access query - Get the last of each item by date

Hello all

In a query, I need to pull all of the last records of every itemID that is ActiveYN = Yes.

So if my table [t_Dtail] is

DetailID,  tdate, ItemID, ActiveYN

how do I do that?

If I do it as

SELECT * From t_dtail WHERE ActiveYN = True
I know I get everything that's true.

So if my table has 50 ItemID # 20 How do I get just the Last True of all the ItemID (not just number 20's??????

Tried
SELECT * From t_dtail WHERE ActiveYN = True HAVING ItemID= DMax(ItemID, t_Dtail,ItemID)

But that doesn't get it either
????????
0
wlwebb
Asked:
wlwebb
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1 Solution
 
Rey Obrero (Capricorn1)Commented:
try this

select a.*
from t_dtail as a
inner join
(select max(b.tdate) as maxtdate, b.detailId
 from t_dtail as b
 group by b.detailId
having b.ActiveYN= true
) as c
on a.detailId = c.detailId  and a.tdate=c.maxtdate
0
 
wlwebbAuthor Commented:
I keep getting
Your query does not include the specified expression 'itemid' as part of an aggregate function
0
 
Rey Obrero (Capricorn1)Commented:
try this


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
having b.ActiveYN= true
) as c
on a.itemid = c.itemid  and a.tdate=c.maxtdate
0
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wlwebbAuthor Commented:
....your query expression does not ...... 'b.ActIveYN=-1' as part of an aggregate function
0
 
wlwebbAuthor Commented:
Tried True before -1
0
 
Rey Obrero (Capricorn1)Commented:
sorry, try this


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
0
 
GozrehCommented:
Why not simple as

SELECT t_Dtail.ItemID, Max(t_Dtail.tdate) AS MaxDate
FROM t_Dtail
WHERE (((t_Dtail.ActiveYN)=True))
GROUP BY t_Dtail.ItemID;
0
 
wlwebbAuthor Commented:
Thanks for the input!
0
 
Rey Obrero (Capricorn1)Commented:
@ wlwebb

did you even try my post at http:#a39809559 ?


.
0
 
wlwebbAuthor Commented:
Cap 1....

I ALWAYS ALWAYS try anything you post first!  History has taught me that your posts always work 99.999999% of the time

Either I was typing something wrong (couldn't copy and paste last night -no connection for laptop- where I was.... I was reading on my phone and trying to type it into my laptop.  I will give your's a whirl again today.


PS.... The 0.0000001% of the time it doesn't work is because my table isn't set up right to allow what I want to do to work............
0
 
wlwebbAuthor Commented:
Cap 1 ....  I tried the last suggestion.......

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


It produces the error

You tried to execute a query that does not include the specified expresion 'b.Active YN=-1' as part of an aggregate function.

The code above is a cut/paste from my sql view..........
????????????

*******************
NEVER MIND... I SEE I USED THE WRONG ONE NOW>>>>
0
 
Rey Obrero (Capricorn1)Commented:
so did you get it working?
0
 
wlwebbAuthor Commented:
Cap1
Yes. .... Once I used the right one....So again... That bad was on me!

Like I said above ... I've seen enough here to know you are one of the best on here ....  You, MBiz and Irog and LSM always shoot straight with great pointers.  Others on here are great too ... Not discrediting them in any way ... Just know when one of the above post usually it always works (unless I screw up the typing or misinterpret something)

THANK YOU!
0
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