Re: Selecting All Columns Associated With Maximum Value of One Column

On Wed, 5 Oct 2011, David Johnston wrote:

> 2) "Window" -  max(quant) OVER (PARTITION BY ...)

   Hmm-m-m. I have a problem here emulating the example on the document page.
Regardless of which column is first after SELECT postgres tells me that
column does not exist.

select site_id, sample_date, param, max(quant) over (partition by param)
chemistry;
ERROR:  column "site_id" does not exist
LINE 1: select site_id, sample_date, param, max(quant) over (partiti...
                ^
select str_name, site_id, sample_date, param, max(quant) over (partition by
str_name) chemistry;
ERROR:  column "str_name" does not exist
LINE 1: select str_name, site_id, sample_date, param, max(quant) ove...
                ^
   What am I doing incorrectly here?

   Also, with the window function can I limit the output to a single str_name
and param?

Rich