Grzegorz Nowakowski <[EMAIL PROTECTED]> writes:
> But I have another question: why can't be
> inheritance implemented as implicit JOIN?

Interesting thought, but joins are expensive --- this would be quite a
lot slower than the current way, I fear, especially when you consider
more than one level of inheritance.  Also, switching over to this would
destroy the current usefulness of inheritance for partitioning.

                        regards, tom lane

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