| From: | "Qingqing Zhou" <zhouqq(at)cs(dot)toronto(dot)edu> |
|---|---|
| To: | pgsql-hackers(at)postgresql(dot)org |
| Subject: | Re: Assigning fixed OIDs to system catalogs and indexes |
| Date: | 2005-04-13 02:09:57 |
| Message-ID: | d3hv51$v97$1@news.hub.org |
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| Lists: | pgsql-hackers |
"Christopher Kings-Lynne" <chriskl(at)familyhealth(dot)com(dot)au> writes
> Is it possible to cluster system tables?
>
Ooops, I guess I mixed two concepts - oid and relfilenode. Those operations
change relfilenode but not oids. I don't think we could cluster system
tables.
template1=# select oid, relfilenode from pg_class where relname =
'pg_attribute_
relid_attnam_index';
oid | relfilenode
-------+-------------
16688 | 17239
(1 row)
template1=# reindex table pg_attribute;
REINDEX
template1=# select oid, relfilenode from pg_class where relname =
'pg_attribute_
relid_attnam_index';
oid | relfilenode
-------+-------------
16688 | 17241
(1 row)
template1=# cluster pg_attribute_relid_attnam_index on pg_attribute;
ERROR: "pg_attribute" is a system catalog
Regards,
Qingqing
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