Hi Alban,
Thank you for the update.
For one thing: The table holds information regarding to which transactions each row is visible (the xid) whereas the index does not.
What would be the each value of the xid, like 8 bytes,or 32 bytes..which causing the table to hold what index is not and the space occupied is exactly half of the table in indexes. Can you explain a bit on this.
Thanks in Advance
Regards
Raghavendra
On Sun, Mar 28, 2010 at 4:52 PM, Alban Hertroys
<dalroi@solfertje.student.utwente.nl> wrote:
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:1046,4baf3bfb10411932744907!