2010/1/29 Jonah H. Harris <jonah.har...@gmail.com>:
> On Thu, Jan 28, 2010 at 9:10 AM, Pavel Stehule <pavel.steh...@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 > -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
