Re: [rules-users] Disting and group by

   Hi Wolfgang,    I believe both suggestions (mine and yours) are equivalent, just different ways of writing down the solution for the problem. If you identify any significant difference in the results, please let me know... :)

    Edson 2010/8/11 Wolfgang Laun <wolfgang.laun(a)gmail.com&gt; > > 2010/8/11 Edson Tirelli <tirelli(a)post.com&gt;: > > > >    "Group by" is implicit in rules, just by writing patterns in order. > > So, > > if you write a rule that starts with Customer(), it will automatically > > do a > > "group by" customer: > > when > >    Customer(...) > >    ... > > then > > Hmm, I think vijrams meant "grouping of the accumulated sums" which will > require the PurchaseSum facts I proposed. Only then it is possible to > obtain > all sums-per-day grouped by customer. > > I don't see why "customers that purchased more than 100 on a given date" > should fire in Customer order. > > Even with my solution some additional quirks will be necessary to get > the data grouped by Customer. > > -W > > _______________________________________________ > rules-users mailing list > rules-users(a)lists.jboss.org > https://lists.jboss.org/mailman/listinfo/rules-users --   Edson Tirelli   JBoss Drools Core Development   JBoss by Red Hat @ www.jboss.com _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users