Apologies to Guillaume for the duplicate reply, but I didn't hit "reply to all" 
the first time so didn't actually reply to the list. So here it is again (the 
first time).

>pgAdmin only shows the constraint. The fact that it's done with an
>index
>is an implementation detail

So creating another index on the column with the 'unique' constraint is 
redundant I take it. It would seem to me that this "implementation detail" is 
unnecessarily obscure/confusing. But that is with postgresql, not pgamin. To 
add to my first reply, I have noticed confusion WRT this from others on the web 
when trying to gain insight searching the web. So I know it's not just me. If 
creating another index is redundant, then I suspect there are a lot more 
redundant indexes out there because of the way this is implemented. But again, 
that is with Postgresql. 

Thanks,

BillR 
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