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

Le 20/04/2012 16:18, Guillaume Lelarge a écrit :
> SELECT
> CASE
> WHEN coalesce(t.spclocation, '') = ''
> THEN
> current_setting('data_directory')||'/'||pg_relation_filepath(c.oid)
> ELSE replace(pg_relation_filepath(c.oid),
> 'pg_tblspc/'||t.oid::text,
> t.spclocation)
> END AS filepath
> FROM pg_class AS c
> LEFT JOIN pg_tablespace AS t ON c.reltablespace=t.oid
> WHERE
> c.relname='pg_class';

I was at the same point, doing another way :

COALESCE(spclocation, setting) ||
CASE
WHEN T.spcname <> 'pg_global'
THEN SUBSTRING(REPLACE(pg_relation_filepath(C.oid),
'pg_tblspc/', ''),
POSITION('/' IN
REPLACE(pg_relation_filepath(C.oid), 'pg_tblspc/', '')),

CHARACTER_LENGTH(REPLACE(pg_relation_filepath(C.oid), 'pg_tblspc/', '')))
WHEN T.spcname = 'pg_global'
THEN (SELECT setting FROM pg_settings WHERE name =
'data_directory')
|| '/' || pg_relation_filepath(C.oid)
ELSE '/' || pg_relation_filepath(C.oid) END AS location

... using pg_setting

This returns the same datas

A +

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