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Enumerate Grouped Records in a Query

Enumerate Grouped Records in a Query

Im trying to enumerate grouped records in a query. Please see table below.

The query is grouped and sorted by ID then depth. When I run the query I would like Depth_Enum to enumerate the depth values based on the grouping.
Any suggestion would be appreciated.
Thank You

RE: Enumerate Grouped Records in a Query

Post the SQL behind the query - specifically the ORDER BY clause...

Beir bua agus beannacht!

RE: Enumerate Grouped Records in a Query

Thanks genomon:

The SQL is as follows:

CODE -->

SELECT tblPhysData.ColNum AS ID, tblPhysData.Depth
FROM tblStationInfo INNER JOIN tblPhysData ON tblStationInfo.ColNum = tblPhysData.ColNum
ORDER BY tblPhysData.ColNum, tblPhysData.Depth; 

So where I'm stuck is how to add a Depth_Enum field that enumerates the sorted depth value as shown in my example table (also known as group ranking?)

RE: Enumerate Grouped Records in a Query

Try something like:


SELECT tblPhysData.ID, tblPhysData.Depth, "Depth_" & Count([tblPhysData_1]![ID]) AS Expr1
FROM tblPhysData INNER JOIN tblPhysData AS tblPhysData_1 ON tblPhysData.ID = tblPhysData_1.ID
WHERE (((tblPhysData_1.Depth)<=[tblPhysData]![Depth]))
GROUP BY tblPhysData.ID, tblPhysData.Depth; 

ID	Depth	Expr1
39	0.04	Depth_1
39	1.03	Depth_2
39	2.01	Depth_3
40	0.12	Depth_1
40	1.01	Depth_2
40	2.22	Depth_3
41	0.03	Depth_1
41	1.01	Depth_2
41	2.02	Depth_3 

Hook'D on Access
MS Access MVP

RE: Enumerate Grouped Records in a Query

Thanks dhookom. When I insert the SQL code you provided into the query I get the following message:

Any suggestions?

Thank You

RE: Enumerate Grouped Records in a Query

What is the exact SQL you tried in your query?

I had created a table with records as you suggested (without tblStationInfo) and it worked as expected for me.

Hook'D on Access
MS Access MVP

RE: Enumerate Grouped Records in a Query


I believe I had a minor syntax error. I reworked the query and all is working fine now. Thanks so much for your help!

RE: Enumerate Grouped Records in a Query

Don't you think Duane deserves a Star for the help....?

Have fun.

---- Andy

A bus station is where a bus stops. A train station is where a train stops. On my desk, I have a work station.

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