| From: | Thom Brown <thom(at)linux(dot)com> |
|---|---|
| To: | Greg Stark <gsstark(at)mit(dot)edu> |
| Cc: | Pavel Stehule <pavel(dot)stehule(at)gmail(dot)com>, Kevin Grittner <Kevin(dot)Grittner(at)wicourts(dot)gov>, Alex Hunsaker <badalex(at)gmail(dot)com>, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Robert Haas <robertmhaas(at)gmail(dot)com>, pgsql-bugs <pgsql-bugs(at)postgresql(dot)org> |
| Subject: | Re: string_agg delimiter having no effect with order by |
| Date: | 2010-08-05 09:39:13 |
| Message-ID: | AANLkTik7Nc=ei-LvA2MXeYUXSduGskOmGqCPfO99MDwK@mail.gmail.com |
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| Lists: | pgsql-bugs pgsql-hackers |
On 5 August 2010 10:29, Greg Stark <gsstark(at)mit(dot)edu> wrote:
> On Thu, Aug 5, 2010 at 5:18 AM, Pavel Stehule <pavel(dot)stehule(at)gmail(dot)com> wrote:
>> The same problem can be with custom aggregates :( so this syntax isn't
>> too robust. We can support Oracle's syntax in future releases, where
>> syntax divide aggregate call and ORDER BY clause.
>>
>
> What syntax is that?
>
> --
> greg
>
An example I've found is:
SELECT deptno, LISTAGG(ename, ',') WITHIN GROUP (ORDER BY ename) AS employees
FROM emp
GROUP BY deptno;
--
Thom Brown
Registered Linux user: #516935
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