"Tatsuo Ishii" <is...@postgresql.org> wrote:

> VOLATILE functions such as random() and timeofday() apparently do not
> write and sending those queries that include such functions is
> overkill.

> Can we VOLATILE property divide into two categories, say, VOLATILE
> without write, and VOLATILE with write?

I think it's possible. We might borrow words and semantics from
unctional programming languages for functions with side effects.
How do they handle the issue?

BTW, random() *writes* the random seed, though no one will mind it.

Regards,
---
Takahiro Itagaki
NTT Open Source Software Center



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