Steve Atkins <[email protected]> writes:
> Is the order in which the expressions in a VALUES() clause defined?
> I'm doing this: INSERT INTO foo (a, b) VALUES (nextval('bar'), currval('bar'))
> It works fine, but I'm wondering whether it's guaranteed to work or whether
> I'm relying on an artifact of the implementation.
I'd say it's an artifact. It probably does work reliably at the moment,
but if we had a reason to change it we'd not feel much compunction about
doing so. (The most obvious potential reason to change it is parallel
evaluation of expressions, which is a long way off, so you probably
don't have any near-term reason to worry. But ...)
Consider sticking the nextval() into a WITH.
regards, tom lane
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