On 03/11/2014 11:50 PM, Jaime Casanova wrote:
> On Tue, Mar 11, 2014 at 10:06 PM, Tom Lane <tgl@sss.pgh.pa.us> wrote:
>> But not sure how to define a unique
>> index that allows (joe, db1) to coexist with (joe, db2) but not with
>> (joe, 0).
>>
> and why you want that restriction? when you login you need to specify
> the db, right? if you don't specify the db then is the global 'joe'
> that want to login
>
You can't login without specifying a db. Every session is connected to a db.
cheers
andrew
