Re: BUG #16140: View with INSERT, DO INSTEAD, and ON CONFLICT causes an error

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: bryan(dot)dicarlo(at)gmail(dot)com
Cc: pgsql-bugs(at)lists(dot)postgresql(dot)org, Peter Geoghegan <pg(at)bowt(dot)ie>
Subject: Re: BUG #16140: View with INSERT, DO INSTEAD, and ON CONFLICT causes an error
Date: 2019-11-28 18:26:33
Message-ID: 24978.1574965593@sss.pgh.pa.us
Views: Raw Message | Whole Thread | Download mbox | Resend email
Thread:
Lists: pgsql-bugs

PG Bug reporting form <noreply(at)postgresql(dot)org> writes:
> When creating an updatable "complex" view, if an ON CONFLICT clause is
> provided, an INSERT SELECT to that view will cause "ERROR: variable not
> found in subplan target lists". Removing the ON CONFLICT clause eliminates
> the error message.

I believe the problem is that you wrote the ON CONFLICT clause
incorrectly:

> ON CONFLICT (slo_id, time_window, tags) DO UPDATE SET value = NEW.value

You should have written "EXCLUDED.value" not "NEW.value". There is
a bug here, but it's that the parser accepted this rule. I'm guessing
that the parsing logic for ON CONFLICT didn't consider the possibility
that NEW and OLD for a rule would already be in the range table.

regards, tom lane

In response to

Responses

Browse pgsql-bugs by date

  From Date Subject
Next Message Bryan DiCarlo 2019-11-28 19:21:24 Re: BUG #16140: View with INSERT, DO INSTEAD, and ON CONFLICT causes an error
Previous Message Tom Lane 2019-11-28 15:21:40 Re: Numeric is not leakproof