Re: [HACKERS] PQdeleteTuple function in libpq

Excerpts from Merlin Moncure's message of jue jun 02 11:33:28 -0400 2011:
> On Thu, Jun 2, 2011 at 10:02 AM, Alvaro Herrera
> <alvherre@commandprompt.com> wrote:

> > Seems pretty wasteful if you want to delete a single tuple from a large
> > result.  I think if you desired to compact the result to free some
> > memory after deleting a large fraction of the tuples in the result it
> > could be useful to do that, otherwise just live with the unused holes in
> > the storage area as suggested by Pavel.
> 
> That would work, but it would potentially invalidate external pointers
> to internal result data.  If you wanted to do this, it might be better
> to expose a compaction feature which can be invoked directly.

Wouldn't that also invalidate external pointers?

-- 
Álvaro Herrera <alvherre@commandprompt.com>
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