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). When
>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.
>
>
Hmm, so a data row update also update the CTID in all indexes, too. I
see what you mean !
>Hope this helps,
>
>
It did, thanks.
/BL