strk <strk(at)keybit(dot)net> writes:
> Hello all, I saw that STABLE-defined functions
> don't get replaced by their output, shoudn't they ?
> Following shows that VOLATILE and STABLE functions outputs
> won't get into the Filter, while IMMUTABLE will.
The examples are acting exactly as they should. See
http://www.postgresql.org/docs/8.0/static/xfunc-volatility.html
regards, tom lane