Re: check (constraint) on point data type?

["Jim Adams" <postgres(at)drakeenterprises(dot)org>]

Could it be due to the comma in your CHECK statement instead of a decimal?

 

-----Original Message-----
From: pgsql-novice-owner(at)postgresql(dot)org
[mailto:pgsql-novice-owner(at)postgresql(dot)org] On Behalf Of Jill
Sent: Tuesday, July 24, 2007 2:59 PM
To: pgsql-novice(at)postgresql(dot)org
Subject: [NOVICE] check (constraint) on point data type?

 

Hi,

I'd like to limit the values that can be added to a field.

The field is of type 'point', and I'd like it to reject any values less than
0 or bigger than 1 (i.e., accept only points with values like (0.4, 0.26)).

Let's say I try to define the upper boundary by doing:

ALTER TABLE "public"."locations"  ADD CONSTRAINT "up_boundary_chk" CHECK
(location < (1,1));

 

but it fails.

What am I doing wrong?

I'm using Postgres 8.2.4.1

Thanks!

Jill