> > #controller.py > > grid = SQLFROM.grid(query,..,...) > a = grid.__dict__ > b = sum([int(i.number_of_bags) for i in a['dbset'].select()]) > > This is more efficient because the database calculates the sum for you and you don't have to load all of the database records into the web2py process:
bag_sum = db.mytable.number_of_bags.sum() b = db().select(bag_sum).first()[bag_sum] See http://web2py.com/books/default/chapter/29/06/the-database-abstraction-layer#sum--avg--min--max-and-len. Anthony -- Resources: - http://web2py.com - http://web2py.com/book (Documentation) - http://github.com/web2py/web2py (Source code) - https://code.google.com/p/web2py/issues/list (Report Issues) --- You received this message because you are subscribed to the Google Groups "web2py-users" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
