Search Postgresql Archives

Re: Using constraint exclusion with 2 floats

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

 



Thank you for your answer.

I'm sorry I really didn't explained well my problem :/

For example if I have a table test like this :
CREATE TABLE test (min real not null, max real not null, desc character varying not null);

and I want a constraint exclusion to make sure the range min/max doens't overlap

I can't write ALTER TABLE test add constraint test_exclude EXCLUDE USING btree ((min,max) WITH &&)

I saw the extension temporal gives a new type PERIOD and has operators like &&, but only for timestamp, so I'm wondering if I must code something something similar or if there's is an easier way



On Wed, Oct 12, 2011 at 11:23 PM, Simon Riggs <simon@xxxxxxxxxxxxxxx> wrote:
On Wed, Oct 12, 2011 at 10:16 AM, Julien Rouhaud <rjuju123@xxxxxxxxx> wrote:
> Hi everyone,
> Is there an easy way (that I maybe missed) to use constraint exclusion with
> 2 floats ?
> Must I find an extension the temporal extension which create a new type with
> 2 timestamp or can I usethe && operator with 2 fields ?

There's nothing in constraint exclusion that depends upon specific datatypes.

Let us know if you find a problem with floats.

--
 Simon Riggs                   http://www.2ndQuadrant.com/
 PostgreSQL Development, 24x7 Support, Training & Services


[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