Re: 回复:[GENERAL]SP to calc shipments vs receipts
От | Bret Stern |
---|---|
Тема | Re: 回复:[GENERAL]SP to calc shipments vs receipts |
Дата | |
Msg-id | 1380121421.2723.24.camel@centos-dev.machinemanagement.com обсуждение исходный текст |
Ответ на | Re: [GENERAL] 回复:[GENERAL] SP to calc shipments vs receipts (Chris Travers <chris.travers@gmail.com>) |
Список | pgsql-general |
On Wed, 2013-09-25 at 07:46 -0700, Chris Travers wrote: > > > > On Wed, Sep 25, 2013 at 7:27 AM, DDT <410845160@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
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