Sorry, I wasn't sure what list I should be sending this question to...
I have a multi-tenant-like application. We have a fields tree that we
call a template, with something like this:
fields(id, parent_id, name)
And several other related tables. Since we started to support multiple
SELECT id,
(array_agg(rspid))[1] AS rspid,-- (1)
for such cases, I have created an new aggregate function:
SELECT firstnotnull(rspid) AS rspid,
this avoid to collect first all rspid values to then keep only the first one...
CREATE OR REPLACE FUNCTION public.first_agg_nn (
On Wed, May 29, 2013 at 9:58 AM, Rodrigo Rosenfeld Rosas rr.ro...@gmail.com
wrote:
I know I could use a trigger, or some check constraint maybe, to ensure
the field exists upon insert (or update), but I can't ensure the database
will become inconsistent in case I remove a mapped field from
Em 29-05-2013 12:51, Vick Khera escreveu:
On Wed, May 29, 2013 at 9:58 AM, Rodrigo Rosenfeld Rosas
rr.ro...@gmail.com mailto:rr.ro...@gmail.com wrote:
I know I could use a trigger, or some check constraint maybe, to
ensure the field exists upon insert (or update), but I can't
