Martijn van Oosterhout <kleptog@svana.org> writes:
> On Fri, Jun 22, 2007 at 09:32:30PM +0200, cluster wrote:
>> In B-trees all non-leaf nodes have a bunch of pointers to its child
>> nodes. What is the size of such a pointer?
> I imagine it's a page number, probably just a 32-bit integer.
src/include/access/itup.h
Also see "Notes about data representation" in
src/backend/access/nbtree/README
We use the same tuple format for all entries in a btree. The line
number part of the t_tid field is useless for downlinks, but in view of
alignment considerations this is unlikely to be worth worrying about.
regards, tom lane
