On 28 Mar 2010, at 10:05, Tadipathri Raghu wrote:

> Hi All, 

...

> I like to know here is, I have created a table with one column and the index 
> is on one column only, so why is the space occupied differently, almost all 
> half of the space of the table and why not full. Could please you explain on 
> this. And what exactly the postgres architecture treat on Index table and 
> Ordinary table.

For one thing: The table holds information regarding to which transactions each 
row is visible (the xid) whereas the index does not.

Alban Hertroys

--
Screwing up is an excellent way to attach something to the ceiling.


!DSPAM:737,4baf3c0010411382482531!



-- 
Sent via pgsql-general mailing list (pgsql-general@postgresql.org)
To make changes to your subscription:
http://www.postgresql.org/mailpref/pgsql-general

Reply via email to