Re: Why did pg_relation_filepath does not give a correct path ?

Le 20/04/2012 12:05, Guillaume Lelarge a écrit :
> On Fri, 2012-04-20 at 11:35 +0200, F. BROUARD / SQLpro wrote:
>> Hi,
>>
>> according to the documentation, the function pg_relation_filepath
>> "returns the entire file path name (relative to the database cluster's
>> data directory PGDATA) of the relation"
>>
>> When my table are located in the pg_default tablespace, the gievn
>> relative path is correct
>>
>> When my table are located on a specific tablespace, this function
>> returns incorrect dats such as :
>>
>> pg_tblspc/25310/PG_9.1_201105231/16594/25311
>>
>> only the "PG_9.1_201105231/16594/25311" is correct.
>>
>> What does the "pg_tblspc/25310" do ???
>>
>> How can I obtain the correct relative path ?
>>
>
> It is the correct relative path. It's relative to $PGDATA. Your
> tablespace has the OID 25310. So, you have a symbolic link (or junction
> if you are on Windows) named 25310 in your $PGDATA/pg_tblspc directory.
> And PostgreSQL will access this table via the symbolic link. It really
> uses this path: pg_tblspc/25310/PG_9.1_201105231/16594/25311
>
> There's nothing wrong here.


yes, but I want to have the real path, not the symbolic PG path...

Do you know haw can I obtain it by a calssical SQL Query ?

A +
>
>


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