I searched for the new GIN operator so that I
could brush it up for commit ahead of the rest -- only to find out that
it was eviscerated from the patch between v5 and v5.1.
The latest version of the patch which contained the new GIN operator is version `Array-ELEMENT-foreign-key-v6.patch` which works fine and passed all the regression tests at the time (2018-01-21). We abandoned the GIN operator since it couldn't follow the same logic as the rest of GIN operators use since it operates on a Datum not an array. Not because of any error.
just as Andreas said
On Wed, Jan 31, 2018 at 1:52 AM, Andreas Karlsson <andreas(at)proxel(dot)se> wrote:
The issue I see is that
ginqueryarrayextract() needs to make a copy of the search key but to do
so it needs to know the type of anyelement (to know if it needs to
detoast, etc). But there is as far as I can tell no way to check the
type of anyelement in this context.
If there is any way to obtain a copy of the datum I would be more than happy to integrate the GIN operator to the patch.
