Re: Returning empty on insert - Mailing list pgsql-general

From Winanjaya Amijoyo
Subject Re: Returning empty on insert
Date
Msg-id CAAHo4LPZz-4ft5DQzTjKN=0Ywqer604iqUZpcjCWk-kR2Ye+6w@mail.gmail.com
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In response to Re: Returning empty on insert  (David Rowley <david.rowley@2ndquadrant.com>)
Responses Re: Returning empty on insert
List pgsql-general
Hi

What I want to archive here is:

When record not found then insert and return pid value or if not found then update based on pid and again return its pid. 

Please help. 

Many thanks in advance. 

Regards
Win

On Thu, 16 May 2019 at 15.47 David Rowley <david.rowley@2ndquadrant.com> wrote:
On Thu, 16 May 2019 at 20:28, Winanjaya Amijoyo
<winanjaya.amijoyo@gmail.com> wrote:
> column pid is bigserial that I expect to return on both insert and update
> I don't want to use ON CONFLICT since it would increasing the sequence although it updating the data

It's not very clear what you're trying to do here.

So, by "pid returns empty", you mean that the UPDATE updates 0 rows,
and you always expect it to update 1 row?   The UPDATE is going to
update 0 rows if either "s" is an empty relation, or there's no row in
"area" with the "pid" that's in "s".  "s" will be an empty relation if
"test" does not have any row matching WHERE area = 'test5'.

--
 David Rowley                   http://www.2ndQuadrant.com/
 PostgreSQL Development, 24x7 Support, Training & Services
--
Kind regards,
Winanjaya
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Sent from my iPhone - Gmail MobIle.
My apologize for the typos & brevity.
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