Martijn van Oosterhout wrote:
But where in the documentation did you see anything saying that they
were unique? I imagine you just inferred that from somewhere. I'm not
sure where the documentation should be changed since nowhere actually
recommends them in any way.
Hmm, how about as a comment near by the PGoidValue function ?
Using the CTID, which locates the physical tuple as (block,num). WhenHmm, so a data row update also update the CTID in all indexes, too. I see what you mean !
you update a tuple, or vacuum moves it its CTID will change, so it's
not terribly useful from a user's point of view.
Hope this helps,
It did, thanks.
/BL
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