> Size in block number is useless for those who doesn't understand the
> notion of block, or block size. Those who understands the notion
> should come up with the simple formula (except the annoying
> casts). Anyone can find the clue to the base values by searching the
> document in the Web with the keywords "block size" and "relation size"
> or even with "table size". (FWIW, I would even do the same for the new
> function if any...) If they need it so frequently, a user-defined
> function is easily made up.
>
> regards.
I didn't know about the existence of the user-defined function .
I fully understood , Thanks .
Regards,
Yu Kimura