Thanks a lot to all of you for helping me on this issue. I will make sure that 
I post all my mails henceforth on the appropriate mailing list.
  Thanks once again for all the help,
  Best regards,

Euler Taveira de Oliveira <[EMAIL PROTECTED]> wrote:
  sayali k wrote:

> I am keen in implementing certain additional aggregate
> functions like percentage, standard deviation etc. I
> would like to know the complexity of this and also the
> parts of the code which would have to be modified for
> the same,
This is the wrong list to ask this kind of question. Use pgsql-hackers
Some statistics functions [1] are already implemented in PostgreSQL.
Samples are in utils/adt/float.c.


Euler Taveira de Oliveira

Best regards,
  == ~~~ == ~~~ == ~~~ == ~~~ == ~~~ == ~~~ == 
  The degree of technical competence is 
  inversely proportional to the level of management. 
== ~~~ == ~~~ == ~~~ == ~~~ == ~~~ == ~~~ == 

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