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Re: TupleDesc and HeapTuple

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Excerpts from Luca Ferrari's message of mar jul 06 02:53:03 -0400 2010:
> Hi,
> I don't see any direct link between the TupleDesc structure and the HeapTuple 
> one, and it seems strange to me since to manipulate a tuple you often need the 
> descriptor. What is the trick here?

You're supposed to know which relation you got the HeapTuple from, so
you get the TupleDesc from there.

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