postgres db files - which file represents the specific table/index?

Question

when i go into sql-8.2/base/ to check how much space does my table take, there are plenty of files named by a number. how can i find the specific file which sto

Answer 1

select pg_relation_filepath('OID or name of a table, index, sequence, or toast table');

For example:

select pg_relation_filepath('flush_history');
Returns base/83780/153211 which you will find in your data directory.

http://www.postgresql.org/docs/current/static/functions-admin.html