Greetings,
* Michael Paquier (mich...@paquier.xyz) wrote:
> On Fri, Dec 07, 2018 at 11:33:32PM -0500, Tom Lane wrote:
> > How about cases where the relation OID exists but it's the wrong
> > kind of relation?
>
> Such cases already return an error:
> =# create sequence popo;
> CREATE SEQUENCE
> =# select pg_partition_tree('popo');
> ERROR: 42809: "popo" is not a table, a foreign table, or an index
> LOCATION: pg_partition_tree, partitionfuncs.c:54
>
> I think that's a sensible choice, because it makes no sense to look for
> the inheritors of unsupported relkinds. Perhaps you have a different
> view on the matter?We should really have a more clearly defined policy around this, but my recollection is that we often prefer to return NULL rather than throwing an error for the convenience of people doing things like querying pg_class using similar functions. I wonder if we maybe should have a regression test for every such function which just queries the catalog in a way to force the function to be called for every relation defined in the regression tests, to ensure that it doesn't segfault or throw an error.. Thanks! Stephen
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