Re: distinguish update from insert (on conflict)

On 22/05/2019 03:37, Justin Pryzby wrote:
> On Tue, May 21, 2019 at 06:57:36PM -0700, Adrian Klaver wrote:
>> On 5/21/19 6:34 PM, Justin Pryzby wrote:
>>> Is it still impossible to distinguish whether a row was inserted vs updated ?
>>
>> You will need to be more specific.
>
> Sorry, I mean with UPSERT / "INSERT .. ON CONFLICT DO UPDATE", is it possible
> to tell whether a row was inserted vs. updated ?
>
> Thanks,
> Justin
>
>

Here's my recipe for that:

RETURNING
/* whatever, */
(xmax = 0) AS is_new_record
;

I don't know if any of the hackers thought of a sleeker technique

--
Regards

Fabio Ugo Venchiarutti
OSPCFC Network Engineering Dpt.
Ocado Technology

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