Raghavendra <raghavendra....@enterprisedb.com> wrote:
> Venkat Balaji <venkat.bal...@verse.in>wrote:
 
>> [attempt to calculate file space from row layout and number of
>> rows]
 
> One more point to add to this good discussion, each row header
> will occupy 24 bytes + 4 bytes pointer on page to tuple.
 
Not to mention:
 
http://www.postgresql.org/docs/9.1/interactive/storage-toast.html
 
-Kevin

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