On 2019-Mar-29, Tom Lane wrote:
> Alvaro Herrera <alvherre@2ndquadrant.com> writes:
> > On 2019-Mar-29, PG Bug reporting form wrote:
> >> SQL Error [42809]: ERROR: cannot create index on foreign table "msg_json"
>
> > Ah, this is because we try to propagate the index to the partition,
> > which appears to be less than desirable. Maybe this patch fixes it? I
> > have not tested it, only verified that it compiles.
>
> Really, what *ought* to happen in such a case is that the FDW gets
> told about the command and has the opportunity to try to do something
> corresponding to making an index. But that smells like a new feature
> rather than a bug fix.
ENOTIME to get it done for pg12 I suppose (I don't know a thing about
postgres_fdw or the FDW API layer).
> I'm not sure that just forcing the case to be a no-op is wise.
> What if the index is supposed to be UNIQUE?
Hmm, good point, that should be disallowed too.
--
Álvaro Herrera https://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services
