Re: Unique UUID value - PostgreSQL 9.2

Sorry guys... *WRONG *email

On 17 March 2016 at 14:29, drum(dot)lucas(at)gmail(dot)com <drum(dot)lucas(at)gmail(dot)com>
wrote:

>
>>>
>> SELECT ​'test_'​ || substring(uuid_generate_v4()::text, 1, 1);
>>
>> Or use a sequence, or just compute "ROW_NUMBER() OVER ()" and tack that
>> on.
>>
>> David J.
>> ​
>>
>>
> Well.. I was able to do it by using:
>
>> INSERT INTO dm.billables_links (billable_id) VALUES ((SELECT billable_id
>> FROM junk.wm_260_billables2 WHERE info ilike '%Alisha%')),
>> INSERT INTO dm.billables_links (mobiuser_id) VALUES ((SELECT id FROM
>> public.ja_mobiusers WHERE name_first LIKE 'Alisha%' AND name_last LIKE
>> 'Dson%'))
>
>
>
> The problem is that I need to do that at the same time, because of a
> constraint:
>
> ALTER TABLE dm.billables_links
> ADD CONSTRAINT cc_one_and_only_one_target CHECK ((("customer_id" IS NOT NULL)::integer + ("role_id" IS NOT NULL)::integer + ("mobiuser_id" IS NOT NULL)::integer) = 1);
>
> I'm having trouble by creating that SQL... can anyone help please?
>
> FYI - It has to be in the same transaction because the mobiuser_id must go
> to the selected billable_id on the first select.
>
>