I see.
Hmm how if an upper level node needs to store (for future use) the
TupleTableSlot* returned by lower level node, e.g. I create a specialized
Sort Node which needs to read all tuples from lower level nodes. In this
case, would it be necessary and sufficient to make a copy the TupleTableSlot
?
Regards,
Bramandia R.
On Fri, Dec 12, 2008 at 9:13 PM, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:
> "Bramandia Ramadhana" <bramandia(at)gmail(dot)com> writes:
> > As per title, what is the lifetime of the virtual tuple TupleTableSlot*
> > returned by ExecProcNode?
>
> Until you next call that same plan node.
>
> regards, tom lane
>