Search Postgresql Archives

Re: (un)grouping question

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

 



On Mon, 2008-01-21 at 12:36 -0500, Rhys Stewart wrote:
> Hi list,
> 
> have the following table
> 
> uid|somevalue
> --------------------
> 1|11
> 2|44
> 3|31
> 4|44
> 5|71
> 6|33
> 7|33
> 8|44
> 9|14
> 
> would like to remove the duplicate values in the column somevalue.
> doing this by just adding a random number  is perfectly fine, however
> i want to retain at least one of the original values of somevalue. Any
> ideas how to do this in in a query? 

Would something like this help?

SELECT MIN(uid), somevalue FROM mytable GROUP BY somevalue;

Also consider just doing:

SELECT DISTINCT somevalue FROM mytable;

...if you don't need uid in the result set.

Regards,
	Jeff Davis


---------------------------(end of broadcast)---------------------------
TIP 4: Have you searched our list archives?

               http://archives.postgresql.org/

[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