Polymorphic queries

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Hi,

maybe someone has an idea upon this:

I have a table which has quite a few inheriting tables which have inheriting tables etc (it's
mirroring a OOP model).

As expected, most queries are polymorphic, so they are going against the parent tables.

I'm searching for an idea how to query _once_ and, if the result hits one of the inheriting
tables, put the additional columns of them into a JSON or array structure, to avoid having to
query again to fetch the inheriting tables. I know that this would be possible with querying the
whole hierarchy via unions, but it seems extremely clumsy.

Does anyone have a solution for this or can push me in the right direction?

- --
tia,

Patric
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