Alvaro Herrera <> writes:
> BTW the new castNode() family of macros don't work with Value nodes
> (because the tags are different depending on what's stored, but each
> type does not have its own struct.  Oh well.)

Yeah.  Value nodes are pretty much of a wart --- it's not clear to me
that they add anything compared to just having a separate node type
for each of the possible subclasses.  It's never bothered anyone enough
to try to replace them, though.

I'll take a look at the patch later.

                        regards, tom lane

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