how to get a number of seconds in some interval ?

[Julius Tuskenis <julius@xxxxxxxx>]

Hello,

Is there a good method of knowing how mutch seconds does some interval 
have?? I tried my_interval / (interval '1 second'), but there is no 
operator interval / interval defines (I wonder why).
Is there a method to do so?

--
Julius Tuskenis
Programavimo skyriaus vadovas
UAB nSoft
mob. +37068233050