Hi!
On Tue, Jun 21, 2011 at 12:04 PM, Stefan Keller <sfkeller(at)gmail(dot)com> wrote:
> 1. Obviously the '@>' has to be used in order to let use the GiST index.
> Why is the '->' operator not supported by GiST ('->' is actually
> mentioned in all examples of the doc.)?
>
I believe it's an architecture problem. You actually need not '->' operator
to be supported by GiST but "column -> 'field_name' = value" expression.
Probably, I'm missing something, but I think supporting of this require
significant catalog changes.
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With best regards,
Alexander Korotkov.