[SQL] multiple function declarations

[Majhi, Akas]

Hi ,   I have a plpgsql function (MainFunc) that intends to reuse a a particular block of code. So, I intend to make that particulat block of code into another function. (say, HelperFunc)   My question is   1. Can I declare a function (HelperFunc) inside the main function  (MainFunc)   2. If yes then how.   Thanks in advance -akas