How about this:
def min(self, col):
"""executes the SQL min() function against the given column"""
s1 = sql.select([col], self._clause, **self._ops).alias('u')
s2 = sql.select([sql.func.min(getattr(s1.c,col.name))]).scalar()
return s2
Randall
Michael Bayer wrote:
> in not really sure if the aggregate functions in SelectResults should
> convert everything to a subquery first, then call the aggrgate on
> that; SelectResults is based on people's desire for a particular
> functionality they missed from SQLObject (which im not terribly
> familiar with), and it was contributed code; as far as I know it
> works very similarly to SQLObject.
>
> such a feature would require a much more complicated SelectResults
> implementation though, it would probably have to re-implement some of
> the functionality within Query to re-create the full query as a
> subquery and operate upon that. right now its just a very simple
> wrapper and doesnt deal with the details of constructing the mapper's
> queries. Also the aggregate functions take a Column object as the
> argument, so that would have to be mapped out to the corresponding
> Column on the subquery object for it to work (selectables do support
> this operation).
>
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