Hmm. I do not think that we should want a shared seed value. The seed
should be different for each call so as to avoid undesired
correlations. If wanted, correlation could be obtained by using an
explicit identical seed.
ISTM that the best way to add the seed is to call random() when the
second arg is missing in make_func. Also, this means that the executor
would always get its two arguments, so it would simplify the code there.
Ok, I think I understand what you meant. You meant the case like following:
\set x random(1, 100)
\set h1 hash(:x)
\set h2 hash(:x) -- will have different seed from h1
so that different instances of hash function within one script would
have different seeds. Yes, that is a good idea, I can do that.
Yes, exactly. What is desirable may depend on the use case, though.
--
Fabien.
