Michael Fuhr wrote:
On Sun, Mar 12, 2006 at 12:34:57AM -0500, Jeffrey Melloy wrote:
Should be able to do this with a standard max() aggregate.
select aid, cat, max(weight)
from table
group by aid, cat;
That query returns the maximum weight for each (aid, cat) pair.
Against the example data it returns the entire table, not the
(aid, cat) pair with the max weight for a given aid.
Michael is right. This query does not solve the problem...
--
All best,
Weimao
Weimao Ke
Indiana University Bloomington
School of Library and Information Science
http://ella.slis.indiana.edu/~wke
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