Combining partial matches in rows of a single table in Access database - sql

Question

I have a table that looks like the one below:
Product 1 2 3 4 5 6 7 8 9
005778 110023 112623 117273 4371 4377 50563
070370 110023 112623 1930 40007 4216 4310 4318 4428 56257
010702 110023 112623 2392 40007
012702 110023 112623 2392 40007
017965 110023 112623 2392 40007
017966 110023 112623 2392 40007
034350 110023 112623 2622 40007 56257
024940 110023 112623 2622 40007 56257
071300 110023 112623 40007 4215 4216 4218 4321 56257
071330 110023 112623 40007 4215 4216 4218 4321 56257
I want it to look like this:
Product 1 2 3 4 5 6 7 8 9
005778 110023 112623 117273 4371 4377 50563
070370 110023 112623 1930 40007 4216 4310 4318 4428 56257
010702/012702/017965/017966 110023 112623 2392 40007
034350/024940 110023 112623 2622 40007 56257
071300/071330 110023 112623 40007 4215 4216 4218 4321 56257
I have attempted to use Allen Browne's ConcatRelated() without success. I am attempting to combine this data to use in an Access 2010 report. VBA or SQL solution would be appreciated.

Answer 1

One way to do it would be to add a Calculated field to the table to concatenate fields [1] through [9] together as a string, i.e.,
Field Name: ValuesString
Expression: "|" & [1] & "|" & [2] & "|" & [3] & "|" & [4] & "|" & [5] & "|" & [6] & "|" & [7] & "|" & [8] & "|" & [9] & "|"
Result Type: Text
Then you can use ConcatRelated() like so
SELECT
Max(ConcatRelated("Product","YourTable","ValuesString=""" & [ValuesString] & """","","/")) AS ProductList,
Max(YourTable.[1]) AS MaxOf1,
Max(YourTable.[2]) AS MaxOf2,
Max(YourTable.[3]) AS MaxOf3,
Max(YourTable.[4]) AS MaxOf4,
Max(YourTable.[5]) AS MaxOf5,
Max(YourTable.[6]) AS MaxOf6,
Max(YourTable.[7]) AS MaxOf7,
Max(YourTable.[8]) AS MaxOf8,
Max(YourTable.[9]) AS MaxOf9
FROM YourTable
GROUP BY YourTable.ValuesString;
returning
ProductList MaxOf1 MaxOf2 MaxOf3 MaxOf4 MaxOf5 MaxOf6 MaxOf7 MaxOf8 MaxOf9
--------------------------- ------ ------ ------ ------ ------ ------ ------ ------ ------
005778 110023 112623 117273 4371 4377 50563
070370 110023 112623 1930 40007 4216 4310 4318 4428 56257
010702/012702/017965/017966 110023 112623 2392 40007
034350/024940 110023 112623 2622 40007 56257
071300/071330 110023 112623 40007 4215 4216 4218 4321 56257

Answer 2

in SQL2005 or later, you can try something like:
select products, t.*
from ( select distinct [1],[2],[3],[4],[5],[6],[7],[8],[9] from tbl ) t
cross apply (select products = stuff(
(select '/' + product from tbl z
where z.[1] = t.[1] AND z.[2] = t.[2] ... AND z.[9] = t.[9]
for xml path('')) --concat list
, 1,1,'') ) z --remove first '/'
You will need to do isnull(z.[1],'') = isnull(t.[1],'') etc. if they can be null.