On Tue, Jun 28, 2016 at 12:44 AM, Riccardo Vianello <riccardo.vianello@xxxxxxxxx> wrote: > Hi all, > > I'm trying to contribute some improvements to the implementation of a gist > index that is part of an open source project and it would be really nice if > anyone could help me answer some questions. > > I would like to use different data structures to represent the internal and > leaf entries. I think I have found several examples in the postgresql source > code where a variable length array is used to pack different data > consistently with the value of a "type" attribute. Is this the suggested way > to proceed, or would it be also possible to use two actually different data > structures? I at first considered this latter approach, but some erroneous > behavior suggested that maybe I am not fully clear about which data > structure should be produced or expected by some parts of the > implementation. > > Could you please also help me understand the difference (if any) between > using the GIST_LEAF macro or the leafkey attribute of the GISTENTRY data > structure? Yes, this is confused. GIST_LEAF is TRUE if key is in leaf page. bool leafkey points if TRUE that key contains value from heap. > > Thank you very much in advance, > > Riccardo > > -- Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general
