How to "roll-up"/aggregate rows from a badly designed table with SQL?

Question

So I'm working with this badly designed table, but it's from another department and I need the data so I have no control over it. How can I get in a proper state? I'm working with MS Access so unfortunately I don't have access to "advanced" SQL functions like partition by, or row_number, etc.

This is the bad table:

KeyID	PA	QL	RuleName
1111	X		YYY
1111		X	ZZZ
1111		X	OOO

I want my final table to look like this:

KeyID	PA	QL	RuleNamePA	RuleNameQL	RuleNameQL2
1111	X	X	YYY	ZZZ	OOO

Any help would be appreciated!

Answer 1

Assuming PA and QL fields are Yes/No type and there is a unique identifier field (such as autonumber type), consider:

Query1: normalize table structure

SELECT ID, KeyID, IIf(PA, "PA", "QL") AS Cat, RuleName FROM Table2;

ID	KeyID	Cat	RuleName
1	1111	PA	yyy
2	1111	QL	zzz
3	1111	QL	ooo

Query2: pivot data with CROSSTAB

TRANSFORM First(RuleName) AS FirstOfRuleName
SELECT KeyID
FROM Query1
GROUP BY KeyID
PIVOT "RuleName" & [Cat] & DCount("*","Query1","Cat='" & [Cat] & "' AND ID<" & [ID])+1;

If there is no unique identifier ID field, change the DCount to:
DCount("*","Query1","Cat='" & [Cat] & "' AND KeyID & Cat & RuleName<'" & [KeyID] & [Cat] & [RuleName] & "'")+1

Actually, can eliminate Query1 if you do the Cat calculation (3 times) in the PIVOT clause then just reference table instead of query in the CROSSTAB.