How to export sales for each item per day in a month easily?

How to export sales for each item per day in a month easily?

I want to export every sales record I have because I want to use Lokad for sales forecasting. I want to know how many sales each item have per day in a month.

Example schema


Id	Date	Quantity
1	2013-07-01	174
1	2013-07-02	96
3	2013-07-03	271
2	2013-07-04	335
1	2013-07-06	72