Re: can somebody execute this query on Oracle 11.2g and send result?
| От | Pavel Stehule |
|---|---|
| Тема | Re: can somebody execute this query on Oracle 11.2g and send result? |
| Дата | |
| Msg-id | 162867791001282332t1227b2b8j9585a978862c974d@mail.gmail.com обсуждение исходный текст |
| Ответ на | Re: can somebody execute this query on Oracle 11.2g and send result? ("Jonah H. Harris" <jonah.harris@gmail.com>) |
| Список | pgsql-hackers |
2010/1/29 Jonah H. Harris <jonah.harris@gmail.com>:
> On Thu, Jan 28, 2010 at 9:10 AM, Pavel Stehule <pavel.stehule@gmail.com>
> wrote:
>>
>> Hello,
>>
>> I can't to install Oracle, and need to know result.
>>
>> CREATE TABLE foo(a varchar(10), b varchar(10));
>>
>> INSERT INTO foo VALUES('aaa',',');
>> INSERT INTO foo VALUES('bbb',';');
>> INSERT INTO foo VALUES('ccc','+');
>>
>> SELECT listagg(a,b) FROM foo;
>
> That's not how listagg works.
>
> The syntax is listagg(expression [, delimiter]) WITHIN GROUP (order by
> clause) [OVER partition clause]
> If a delimiter is defined, it must be a constant.
>
> Query: SELECT listagg(a, ',') WITHIN GROUP (ORDER BY a) FROM foo;
> Result: aaa,bbb,ccc
>
> Query: SELECT listagg(a, ';') WITHIN GROUP (ORDER BY a) FROM foo;
> Result: aaa;bbb;ccc
>
> Query: SELECT listagg(a, '+') WITHIN GROUP (ORDER BY a) FROM foo;
> Result: aaa+bbb+ccc
>
Thank You very much
Pavel
> --
> Jonah H. Harris
>
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