Vanderghast,
I appreciate ALL of your HELP and SUPPORT. Using a slightly modified
version of your suggested coding I greated my query (please see below).
My
query correctly ranks my data from "1" to "whatever" based on the [Ext
B/O]
field.
In my last meeting to present the data I was told an, "Oh yeah, by the
way..."
Now they want me to include the [All B/O] field in the ranking as well.
So,
the ranking should look at the unique record for [Part Number], the [Ext
B/O], AND the [All B/O] fields when assigning the ranking designations to
the
data.
While [Part Number] indicates a UNIQUE record, there are occasionally
duplicate values for BOTH the [Ext B/O] and the [All B/O] field data for
the
record.
If possible, I would LIKE to get rankings for 1, 2, 3, 4, 4, 4, 5, 6, 7,
7,
8, etc...
The records should be sorted:
Ascending by [Rank]
Descending by [Ext B/O]
Descending by [All B/O]
Ascending by [Part Number]
Here is a visual example of the ranking requested:
Rank Ext B/O All B/O Part Number
1 $18,498.10 92 4682840
2 $15,321.75 5 4563896
3 $13,836.60 12 3832851
4 $10,377.41 1285 1684846
4 $10,377.41 1285 3821173
5 $8,936.55 571 9274022
6 $5,215.58 63 4503211
7 $0.00 10 1
8 $0.00 9 2
9 $0.00 8 3
Here is the query I am currently using. Can you please let me know what
changes I need to make to get the results based on my new reporting
requirements?
SELECT
(SELECT Count([VT].[Ext B/O])
FROM [tbl_Chart5a_Report4] AS VT
WHERE VT.[Ext B/O] > tbl_Chart5a_Report4.[Ext B/O])+1 AS Rank,
tbl_Chart5a_Report4.[Part Number],
tbl_Chart5a_Report4.[Host DN],
tbl_Chart5a_Report4.[Ext B/O],
tbl_Chart5a_Report4.[All B/O]
FROM
tbl_Chart5a_Report4
GROUP BY
tbl_Chart5a_Report4.[Part Number],
tbl_Chart5a_Report4.[Host DN],
tbl_Chart5a_Report4.[Ext B/O],
tbl_Chart5a_Report4.[All B/O]
ORDER BY
tbl_Chart5a_Report4.[Ext B/O] DESC ,
tbl_Chart5a_Report4.[All B/O] DESC;
--
Chip
vanderghast said:
There is a way, indeed, to get the dense rank, but again, the easiest one
is
to use a sequence of query (which are called automatically, so there is
no
visible complexity added at the user level).
A first query will be to remove the dups: call that query QNoDup, for
example.
Next, rank QNoDup records. Since there is no dup, you will get 1, 2, 3,
4,
5, ... for ranks. That makes QRank.
Finally, join the original data with the second query, getting the rank
from
that second query, QRank. The dups are re-introduced, but the ranks have
already been computed, correctly, to produce the dense rank, so it is a
job
done.
Vanderghast, Access MVP
Thanks for the support.
I do have duplicate values in the Ext BO field and I do get rankings
that
are replicated like 1, 1, 1, 1, then I will get 5, 6, etc...
Is there a way to get these rankings to show as 1, 1, 1, 2, 3, 4, 4, 5,
etc. ?
My SQL codeing is below:
SELECT (SELECT Count([VT].[Ext BO]) FROM [tbl_Chart5_Report4] AS VT
WHERE
VT.[Ext BO] > tbl_Chart5_Report4.[Ext BO])+1 AS Rank,
tbl_Chart5_Report4.[Part Number], tbl_Chart5_Report4.[Host DN],
tbl_Chart5_Report4.[Ext BO], tbl_Chart5_Report4.[All BO]
FROM tbl_Chart5_Report4
GROUP BY tbl_Chart5_Report4.[Part Number], tbl_Chart5_Report4.[Host
DN],
tbl_Chart5_Report4.[Ext BO], tbl_Chart5_Report4.[All BO]
ORDER BY tbl_Chart5_Report4.[Ext BO] DESC , tbl_Chart5_Report4.[All BO]
DESC;
Thanks for your help!!!
--
Chip
:
If there is no duplicated couple (type, [all bo]), then a join could
be
faster :
SELECT a.[host dn], LAST(a.[all bo]), LAST(a.type), COUNT(*) as rank
FROM table AS a INNER JOIN table AS b
ON a.type < b.type
OR (a.type = b.type AND a.[all bo] <= b[all bo])
GROUP BY a.[host dn]
(I also assume Host DN are unique, no dup), else, we have to modify
the
GROUP BY clause).
If there are dup, and if you want the low mark for equality (ie. ranks
are
1, 1, 1, 4, 5 ... if there are 3 possible records for the first
place,
all three get rank 1, and the fourth record get rank of 4, while there
is
no
second, no third, in that case), then you can use something like:
SELECT a.[host dn], a.[all bo], a.type,
(SELECT COUNT(*)
FROM table AS b
WHERE a.type < b.type
OR (a.type = b.type AND a.[all bo] <= b[all bo])) as rank
FROM table AS a
Haven't tested (typo or otherwise).
Vanderghast, Access MVP
Hopefully THIS time the chart will post correctly!!!
[Rank] [Host DN] [All BO] [Type]
1 328,155.34 831 3
2 134,728.16 416 3
3 1,415,578.32 87 2
4 987,821.27 69 2
5 15,578.32 1,566 1
6 1,878.81 865 1
7 543.02 72
8 89.19 43
--
Chip
:
I am trying to Rank a field based on multiple sort criteria. My
query
sorts
correctly, but the Ranking assignments are not correct. Could
someone
please
review my SQL query and let me know how to correct this problem?
I need to sort Descending by [Type2] AS WELL AS Descending by [Ext
B/O]
I used the following to assign my [Type2] field data:
Type2: IIf([All BO]>=100 And [Host DN]>=20000,3,(IIf([Host
DN]>=20000,2,(IIf([All BO]>=100,1)))))
