Search Postgresql Archives

Re: Window function with valued based range frames?

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



David G Johnston <david.g.johnston@xxxxxxxxx> writes:
> Just looking for recollection regarding why these were omitted initially and
> if anyone has concerned adding them in follow-up.

My recollection is that RANGE requires some data-type-specific behavior
that we don't have any provision for in PG's datatype extension framework
(something about increment/decrement I think, but too lazy to consult the
archives for details).  The original window-function patch had some klugy
hard-wired behavior for a small set of datatypes, which we quite properly
rejected as not being up to project standards: datatype extensibility is
one of PG's defining features, and we're not going to give it up lightly.
Nobody's yet done the work to get something that would pass muster.

> With the recent
> hypothetical work being done maybe these can be re-evaluated in a fresh
> light?

AFAIK those functions are unrelated to this problem.

			regards, tom lane


-- 
Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx)
To make changes to your subscription:
http://www.postgresql.org/mailpref/pgsql-general




[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[Index of Archives]     [Postgresql Jobs]     [Postgresql Admin]     [Postgresql Performance]     [Linux Clusters]     [PHP Home]     [PHP on Windows]     [Kernel Newbies]     [PHP Classes]     [PHP Books]     [PHP Databases]     [Postgresql & PHP]     [Yosemite]
  Powered by Linux