Ok, thank you Tom for this precise answer ! I don't understand how the CLUSTER .. USING index command work then. It is supposed to rewrite on disk following index order. Does it do nothing for GIST index?
Cheers, Rémi-C 2013/10/24 Tom Lane <[email protected]> > =?UTF-8?Q?R=C3=A9mi_Cura?= <[email protected]> writes: > > I'm interested in the tree structure inherent to the gist indexing. > > I was thinking to retrieve it from order of index. > > How? A SQL query would have no idea where the index page boundaries were > in the sequence of retrieved tuples. > > > Do you know how I could access it directly? > > I don't think there's any way to do that without modifying the GiST code. > What you really care about here is the contents of the upper index levels, > which is something that's not exposed at all outside the index AM. > > regards, tom lane >
