> But now that we allow it it'd be nice if it actually worked :-(.
> Looking into the archives I see that we were mainly thinking about
> the possibility of exclusion constraints naming the same column
> more than once, which may explain why nobody tried using such an
> index for queries. I'll see about fixing this in HEAD, although
> my initial guess is that it will be too invasive to back-patch.
I didn't recognized the exclusion constraint feature before. But it looks interesting.
Thank you for your effort.
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