Search Postgresql Archives

Re: SQL Query

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On Wed, Dec 05, 2007 at 10:24:04AM +0000, Ashish Karalkar wrote:
> Hello List member,
> 
> Iha a table containing two columns x and y . for single value of x there are multiple values in y e.g
> 
> X        Y
> ------------
> 1        ABC
> 2        PQR
> 3         XYZ
> 4         LMN
> 1         LMN
> 2         XYZ
> 
> I want a query that will give me following output
> 
> 1    ABC:LMN
> 2    PQR:XYZ
> 3    XYZ
> 4    LMN
> 
> Any help will be really helpful

Use the array_accum aggregate from the docs as follows:

SELECT x, array_to_string(array_accum(y),':')
FROM your_table
GROUP BY x;

Cheers,
David.
-- 
David Fetter <david@xxxxxxxxxx> http://fetter.org/
Phone: +1 415 235 3778  AIM: dfetter666  Yahoo!: dfetter
Skype: davidfetter      XMPP: david.fetter@xxxxxxxxx

Remember to vote!
Consider donating to Postgres: http://www.postgresql.org/about/donate

---------------------------(end of broadcast)---------------------------
TIP 2: Don't 'kill -9' the postmaster

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[Index of Archives]     [Postgresql Jobs]     [Postgresql Admin]     [Postgresql Performance]     [Linux Clusters]     [PHP Home]     [PHP on Windows]     [Kernel Newbies]     [PHP Classes]     [PHP Books]     [PHP Databases]     [Postgresql & PHP]     [Yosemite]
  Powered by Linux