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Re: [BUGS] ON CONFLICT issie detected - Mailing list pgsql-bugs

From Peter Geoghegan
Subject Re: [BUGS] ON CONFLICT issie detected
Date
Msg-id CAH2-WzkCxJRJ4BW_fRuhkXxFQHGmv_WZEbs20jaXzFeDDHDFig@mail.gmail.com
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In response to [BUGS] ON CONFLICT issie detected  (Irina Mileva <imileva@transfermate.com>)
Responses Re: [BUGS] ON CONFLICT issie detected  (Irina Mileva <imileva@transfermate.com>)
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On Fri, Apr 21, 2017 at 4:40 AM, Irina Mileva <imileva@transfermate.com> wrote:
> “ON CONFLICT (columnName) DO UPDATE” do NOT works with FOREIGN TABLES
>
> Returns:
>
> “ERROR: there is no unique or exclusion constraint matching the ON CONFLICT
> specification”

It's unsupported, because there is no such thing as a foreign unique
constraint. Only ON CONFLICT DO NOTHING will work against a foreign
table, and only when an arbiter constraint is not inferred.

See the docs on INSERT.


--
Peter Geoghegan

VMware vCenter Server
https://www.vmware.com/


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