| From: | Chapman Flack <chap(at)anastigmatix(dot)net> |
|---|---|
| To: | Andrew Dunstan <andrew(dot)dunstan(at)2ndquadrant(dot)com>, David Steele <david(at)pgmasters(dot)net>, pgsql-hackers(at)lists(dot)postgresql(dot)org |
| Cc: | Pavel Stehule <pavel(dot)stehule(at)gmail(dot)com> |
| Subject: | Re: proposal: variadic argument support for least, greatest function |
| Date: | 2019-03-06 15:24:42 |
| Message-ID: | 501d9235-cb87-4156-b979-8e9f78c7ea05@anastigmatix.net |
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| Lists: | pgsql-hackers |
On 3/6/19 10:12 AM, Andrew Dunstan wrote:
> Having reviewed the thread, I'm with Andres and Tom. Maybe though we
> should have a note somewhere to the effect that you can't use VARIADIC
> with these.
Perhaps such a note belongs hoisted into the functions-conditional
section of the manual, making a general observation that these things
are conditional *expressions* that may resemble functions, but in
particular, COALESCE, GREATEST, and LEAST cannot be called with
keyword VARIADIC and an array argument, as they could if they were
ordinary functions.
Regards,
-Chap
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