Achieving ROW_NUMBER / PARTITION BY in MS Access
In many cases we can achieve a similar result by performing an unequal self-join on the table and aggregating the results. For example, for data in a table named [MyData]
Ino TYPE DOC
--- -------- ---
1 1800xxc1 3a
2 1810xxc2 3b
3 1700xxc3 3c
4 1700xxc4 3a
5 1800xxc5 3a
6 1800xxc6 3a
7 1800xxc7 3b
the query
SELECT
t1.DOC,
t1.TYPE,
COUNT(*) AS [Ino Seq]
FROM
MyData AS t1
INNER JOIN
MyData AS t2
ON t2.DOC = t1.DOC
AND t2.Ino <= t1.Ino
GROUP BY
t1.DOC,
t1.TYPE
ORDER BY 1, 3
returns
DOC TYPE Ino Seq
--- -------- -------
3a 1800xxc1 1
3a 1700xxc4 2
3a 1800xxc5 3
3a 1800xxc6 4
3b 1810xxc2 1
3b 1800xxc7 2
3c 1700xxc3 1