Re: array UNNESTed to rows stable with respect to order?

[Paul Jungwirth <pj@xxxxxxxxxxxxxxxxxxxxxxxx>]

On 04/17/2018 01:20 PM, Thiemo Kellner wrote:
>  I use UNNEST to get rows from array. This works fine but I am
> not sure whether the ordering remains in the later use.

I think you are looking for `WITH ORDINALITY` (in pg 9.4+). For instance 
you could rewrite your first CTE like so:

SELECT  oid as PROOID,
        PRONAME,
        t as PROARGTYPE,
        i,
        PRONAMESPACE,
        PROOWNER
FROM    PG_CATALOG.PG_PROC,
        UNNEST(PROARGTYPES) WITH ORDINALITY AS proargtypes(t, i)
;

Yours,

--
Paul              ~{:-)
pj@xxxxxxxxxxxxxxxxxxxxxxxx