On 03/19/2014 11:20 PM, Sergey Konoplev wrote:
> On Wed, Mar 19, 2014 at 2:59 PM, AlexK <alkuzo(at)gmail(dot)com> wrote:
>> One of the columns in my table is FLOAT[] NOT NULL. Can I use a constraint to
>> make sure all array elements are positive?
> Sure, you can. Use all() in the CHECK constraint:
>
> CREATE TABLE c (f float[] NOT NULL CHECK (0 < all(f)));
> CREATE TABLE
>
> INSERT INTO c VALUES (array[1,2,3]);
> INSERT 0 1
>
> INSERT INTO c VALUES (array[1,2,3,0]);
> ERROR: new row for relation "c" violates check constraint "c_f_check"
> DETAIL: Failing row contains ({1,2,3,0}).
D'oh!
Much better than my solution.
--
Vik