Solved Crosstab Query - Dynamic Column Sorting (1 Viewer)

AndyC88

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Hi all,

I have a Crosstab Query with a large number of columns (~100) which require to be in a custom order.

I have achieved this by sorting and concatenating the column headers into a string within an unbound text box ("Equipment53","Equipment54","Equipment55","Equipment56" etc...) and pasting that into the column headings box in the properties tab in the Design View.

The problem is the column headings are likely to change in the future. I have tried defining the unbound text box as a parameter within the crosstab Query in the PIVOT IN clause but it returns an error (SYNTAX error in transform statement).

Is there any way to achieve this in SQL? Or is there a way to use VBA to update the Column Headings in the Crosstab Query?

Grateful for any assistance!

Thanks,

Andy
 

arnelgp

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maybe add the "heading" in a table with a single record.
then add the table in your xtab query.
concat the fieldname of the table to the field of your xtab table to
produce the heading.
 

AndyC88

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maybe add the "heading" in a table with a single record.
then add the table in your xtab query.
concat the fieldname of the table to the field of your xtab table to
produce the heading.

Sorry arnelGP - I don't follow? There are multiple column headings?
 

theDBguy

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Hmm, the only way I could think of having a dynamic column heading is to modify the query using a QueryDef object. Maybe there's another way...
 

AndyC88

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Hmm, the only way I could think of having a dynamic column heading is to modify the query using a QueryDef object. Maybe there's another way...

I think that's the solution that was used here but I couldn't get it to work / follow the code to apply to my db.
 

MajP

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The big issue here is that the number of columns exceeded the amount that could be defined in the query definition. So it cannot be done the traditional way.
 

AndyC88

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The big issue here is that the number of columns exceeded the amount that could be defined in the query definition. So it cannot be done the traditional way.
What I found was that when I pasted the concatenated string into the column header property and viewed the query, it worked as intended.

When you go back into the query editor it then throws an error (something like exceeded the 1024 character limit) but it does work if you don’t go back into the query editor.

So there’s no way to reference the value of a text box after the PIVOT IN clause?
 

arnelgp

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this is somewhat similar to the Link you shared.
it does not create new table but instead create new select query.
 

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Pat Hartman

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Here is a sample that creates a report out of a crosstab query. The process substitutes numerical values for the column headings so the crosstab always returns 1, 2,3,4, etc. I limit the number of columns because reports have limited horizontal space but if you are going to export the query you won't need to limit the columns.
 

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AndyC88

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this is somewhat similar to the Link you shared.
it does not create new table but instead create new select query.

@arnelgp - that looks absolutely spot on. Hopefully an easy fix - the new query that is created does not have the previous cross tab fields in by default (they appear and you can add them in qry editor and it works great).

How would I get these fields in the new sorted query (they are things like employeeID, BranchID etc)?

Thanks!
 

arnelgp

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i added another column to XTabOrder table (newXTabColumn).
you can define/type the New Column name of each Column of crosstab.
see XTabOrder table.
 

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AndyC88

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@arnelgp sorry that's not what I meant. There are ~10 fields that are defined as the "row headings" in the original crosstab. These are required in the sorted crosstab as this gets exported to excel to use by another department.

When the new SELECT query (the sorted crosstab) is generated - the "original" row headings are not present.

I think it's this bit of code that it would need adding to?

Code:
sq = Left$(sq, Len(sq) - 1) & " from [" & sXTab & "];"
'open/create new query
On Error Resume Next
Set qd = db.QueryDefs(sNewSelect)
If Err Then
    Set qd = db.CreateQueryDef(sNewSelect, sq)
    db.QueryDefs.Append qd

Thanks so far!
 

AndyC88

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Attached example to show what I mean - you'll see the other row headings as an example; these would need to be displayed in the sorted xtab.
 

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arnelgp

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When the new SELECT query (the sorted crosstab) is generated - the "original" row headings are not present.
you mean the Columns on the Original Crosstab is missing on the Newly created?
or do you want to Add additional Columns not in Original Crosstab?
 

arnelgp

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just add those Column to table XTabOrder
 

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AndyC88

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@arnelgp - thank you, I managed to get this working with an APPEND Query to add the sorted field / column names to the sort table.
 

AndyC88

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good to know :)

Well... one step forward and two steps back...! I remembered the reason why I wanted to specify the column names... I need all the columns displayed whether they have a value in or not. Using your method sorts the columns but still the only data that's displayed are the ones with a value.

I see that if you add a value to your table and specify it in the xTabSort table it will list even if there's no value. Problem is that I'm using Queries to generate the info for the Crosstab.

I suppose a Make Table Query followed by an Append Query (with the list of equipment) would work? (To then generate the crosstab qry from) Just seems a bit messy - is this / would this be common practice? Does it matter if it works?
 

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