Create Access crosstab from query with variable number of columns and multiple values - ms-access

Question

I have a query made by joining data from three tables in a MS-Access DB
simsID Forename Surname Class AssessmentName Mark Percentage
1234 Joe Bloggs 13X Test1 20 50
1235 Fred Bloggs 13Y Test1 31 77.5
1234 Joe Bloggs 13X Test2 30 60
1235 Fred Bloggs 13Y Test2 10 20
1235 Fred Bloggs 13Y Test3 20 33.3333333333333
1234 Joe Bloggs 13X Test3 34 56.6666666666667
I would like to display the data as follows
ID Forename Surname Class Test1 Mark Test1 % Test2 Mark Test2 % Test3 Mark Test3 %
1234 Joe Bloggs 13X 20 50 30 60 34 56.6666666666667
1235 Fred Bloggs 13Y 31 77.5 10 20 20 33.3333333333333
The only way I can see is to do two crosstab queries and then join them.
AllStudentData_Marks query
TRANSFORM Avg(AllStudentData.Mark) AS AvgOfMark
SELECT AllStudentData.simsID AS ID, AllStudentData.Forename AS Forename, AllStudentData.Surname AS Surname, AllStudentData.Class AS Class
FROM AllStudentData
GROUP BY AllStudentData.simsID, AllStudentData.Forename, AllStudentData.Surname, AllStudentData.Class
PIVOT AllStudentData.Assessments.AssessmentName & " Mark";
AllStudentData_Precentage query
TRANSFORM Avg(AllStudentData.Percentage) AS AvgOfPercentage
SELECT AllStudentData.simsID AS ID, AllStudentData.Forename AS Forename, AllStudentData.Surname AS Surname, AllStudentData.Class AS Class
FROM AllStudentData
GROUP BY AllStudentData.simsID, AllStudentData.Forename, AllStudentData.Surname, AllStudentData.Class
PIVOT AllStudentData.Assessments.AssessmentName & " %";
Join query
SELECT AllStudentData_Marks.*, AllStudentData_Percentage.*
FROM AllStudentData_Marks INNER JOIN AllStudentData_Percentage ON AllStudentData_Marks.ID = AllStudentData_Percentage.ID;
As expected this gives me a big table:
AllStudentData_Marks.ID AllStudentData_Marks.Forename AllStudentData_Marks.Surname AllStudentData_Marks.Class Test1 Mark Test2 Mark Test3 Mark AllStudentData_Percentage.ID AllStudentData_Percentage.Forename AllStudentData_Percentage.Surname AllStudentData_Percentage.Class Test1 % Test2 % Test3 %
1234 Joe Bloggs 13X 20 30 34 1234 Joe Bloggs 13X 50 60 56.6666666666667
1235 Fred Bloggs 13Y 31 10 20 1235 Fred Bloggs 13Y 77.5 20 33.3333333333333
I would like to limit the amount of columns (ie not repeat the names) and have more sensible column names (Forename, Surname, etc), but the number of assessment columns is not fixed hence why I am using the wildcard in SELECT.
How can I limit this final query to just return my compact table with sensible headings? ie
ID Forename Surname Class Test1 Mark Test1 % Test2 Mark Test2 % Test3 Mark Test3 %
1234 Joe Bloggs 13X 20 50 30 60 34 56.6666666666667
1235 Fred Bloggs 13Y 31 77.5 10 20 20 33.3333333333333
Thanks in advance for reading.

Answer 1

Yes, two joined CROSSTABS is one way to pivot two sets of values. Another method described in http://allenbrowne.com/ser-67.html#MultipleValues.
And yet another approach involves a UNION query which is then used as source for CROSSTAB. Working with the sample dataset you posted, consider:
Query1:
SELECT simsID, Forename, Surname, Class, AssessmentName, Mark AS Data, "M" AS Cat FROM dataset
UNION SELECT simsID, Forename, Surname, Class, AssessmentName, Percentage, "P" AS Cat FROM dataset;
Query2:
TRANSFORM Sum(Query1.Data) AS SumOfData
SELECT Query1.simsID, Query1.Surname, Query1.Class
FROM Query1
GROUP BY Query1.simsID, Query1.Forename, Query1.Surname, Query1.Class
PIVOT [AssessmentName] & [Cat];
Might find this of interest Crosstab Query on multiple data points