|From:||"Kevin Grittner" <Kevin(dot)Grittner(at)wicourts(dot)gov>|
|To:||"PG Hackers" <pgsql-hackers(at)postgresql(dot)org>, "Peter Eisentraut" <Peter(dot)Eisentraut(at)Sun(dot)COM>|
|Subject:||Re: Distinct types|
|Views:||Raw Message | Whole Thread | Download mbox | Resend email|
>>> Peter Eisentraut <Peter(dot)Eisentraut(at)Sun(dot)COM> wrote:
> Here is an implementation of distinct types, known from SQL99 and
> beyond. They are like domains, except that they don't have defaults
> constraints and they do not allow implicit casting to their base
> The latter aspect is what makes them distinct types. They are useful
> create more type-safe database schemas, to prevent using generic
> such as text or int for everything and then mixing them in
I expect I'll be using this. Thanks!
I notice there's no documentation yet. Do you have a reference to a
good description of the feature, consistent with your implementation?
If not, a couple questions:
(1) Can you compare a literal of the base type?
(2) Can you explicitly cast to the base type?
|Next Message||Simon Riggs||2008-10-31 15:04:13||Enabling archive_mode without restart|
|Previous Message||Nikhil Sontakke||2008-10-31 14:50:46||Re: Fwd: [PATCHES] Auto Partitioning Patch - WIP version 1|