Hi All,
I need to do a "self-join", on 'relationships' that are not defined in my
repository.xml. Is this possible, and if so how ?
Here is a very much simplified version of what I want to do. Here's a sample
of the table (the class is very similar)
Table ACCOUNTTYPE
id, baseCode, variationCode
1, "A", null
2, "A", "B"
3, "A", "C"
4, "B", null
5, "B", "A"
6, "B", "B"
7, "B", "C"
I want to find all account types that have the same baseCode as the
accountType with an id of 3. i.e. I want to return accounttypes 1,2,3
In SQL I would do :
SELECT PARENT.*
FROM ACCOUNTTYPE
INNER JOIN ACCOUNTTYPE PARENT ON ACCOUNTTYPE.baseCode =
PARENT.baseCode
WHERE (ACCOUNTTYPE.ID = 3)
Can I do the same in a PB Query ? Failing that, in an OQL query ?
I realise I can drop "down" to a SQL query, if I have to, but I'd really
rather not if possible - our app must be completely cross-db compatible, and
join's syntaxes vary across DBs.
Oh, and the repository.xml cannot really be modified to include new
relationships (it is automatically generated from XDE by a process we wrote,
and I don't want to have to manually 'fix' it each tim)
Am I asking for the impossible ?
Thanks,
Charles.
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