Re: Extending outfuncs support to utility statements

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: Peter Eisentraut <peter(dot)eisentraut(at)enterprisedb(dot)com>
Cc: pgsql-hackers(at)lists(dot)postgresql(dot)org
Subject: Re: Extending outfuncs support to utility statements
Date: 2022-07-11 14:16:37
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Peter Eisentraut <peter(dot)eisentraut(at)enterprisedb(dot)com> writes:
> On 10.07.22 00:20, Tom Lane wrote:
>> We've long avoided building I/O support for utility-statement node
>> types, mainly because it didn't seem worth the trouble to write and
>> maintain such code by hand.
> This is also needed to be able to store utility statements in (unquoted)
> SQL function bodies. I have some in-progress code for that that I need
> to dust off. IIRC, there are still some nontrivial issues to work
> through on the reading side. I don't have a problem with enabling the
> outfuncs side in the meantime.

Oh! I'd not thought of that, but yes that is a plausible near-term
requirement for readfuncs support for utility statements. So my
concern about suppressing those is largely a waste of effort.

There might be enough node types that are raw-parse-tree-only,
but not involved in utility statements, to make it worth
continuing to suppress readfuncs support for them. But I kinda
doubt it. I'll try to get some numbers later today.

regards, tom lane

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