On Tue, May 6, 2014 at 1:06 PM, Bruce Momjian <br...@momjian.us> wrote:
> I also would like to know what the index-everything hash ops does?  Does
> it index the keys, values, or both?

It indexes both, but it isn't possible to test existence (of a key)
with the hash GIN opclass.

Peter Geoghegan

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