Re: Getting a error on creating a partition table index 12.2.

On 3/5/20 11:31 AM, Alvaro Herrera wrote:
> On 2020-Mar-05, Adrian Klaver wrote:
>
>> On 3/5/20 10:04 AM, nikhil raj wrote:
>
>>> *CREATE INDEX t_e20so1_doi_c_doid_idx
>>>     ON public.t_e20so1_doi USING btree
>>>     (i_doid ASC NULLS LAST)
>>>     TABLESPACE pg_default;*
>
>>> *ERROR: cannot specify default tablespace for partitioned relations SQL
>>> state: 0A00.*
>
>>> Note:- but the same query is executed in the 12.1 version.its working fine.
>>
>> Well this ERROR appeared here:
>>
>> https://git.postgresql.org/gitweb/?p=postgresql.git;a=commit;f=src/backend/commands/indexcmds.c;h=87259588d0ab0b8e742e30596afa7ae25caadb18
>
> The reason for the error is the expectation that creating an index on a
> partitioned table with a tablespace specification will cause the
> children indexes (ie. the indexes on the partitions) to use the same
> tablespace.
>
> This does not work properly for the default tablespace, so I made that
> particular condition an error.
>

The OP was wondering why it worked in 12.1 and not 12.2?

I could not see any obvious reason for that, so:

1) There is a not obvious reason

2) It did not work in 12.1 either.

--
Adrian Klaver
adrian(dot)klaver(at)aklaver(dot)com