On Wed, 2013-09-25 at 07:46 -0700, Chris Travers wrote: > > > > On Wed, Sep 25, 2013 at 7:27 AM, DDT <410845...@qq.com> wrote: > By the way, you can try to save the current totals to another > table. > update it through triggers when the inventory transactions > changed. > it may lead to better performance on a large set of inventory > transactions for query current totals > > > If you are going to do this, my recommendation is to store periodic > summaries (i.e. for sum through date) and then aggregate rolling > forward. This vastly simplifies querying and data validation if you > are only appending data. > -- > Best Wishes, > Chris Travers > > > Efficito: Hosted Accounting and ERP. Robust and Flexible. No vendor > lock-in. > http://www.efficito.com/learn_more.shtml
Thanks Chris for the suggestions. With all the input from this forum, my project is looking pretty sweet. B Stern -- Sent via pgsql-general mailing list (pgsql-general@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general
