Re: [HACKERS] proposal: session server side variables

>> I know this one. It can be empty, which a singleton cannot be. For a 
>> singleton table, you should have one and only one row, you cannot insert or 
>> delete, so this is only part of the real thing.
>
> Surely we can do a bit better than that, if that's what you really want.
> Create the table with an initial row and add a trigger preventing anything 
> except update.

Yes.

I just meant that this is not available easily "out of the box", but it is 
obviously doable with some effort... which people would seldom do.

-- 
Fabien.