Mysql - Making a script multi selection table

The objective is to sort data from a mysql database. There is a database by year. shape 2011_history, 2010_history ... Day in each table column are from 1 to 365. (Or 366 leap year) The sorting must be provided: - Depending on the user (id_account) - Customization of the date. (Example: from 10/09/2011 to 13/09/2011) - Order by group. data display and are the number of each table the user has the date indicated. I provide the structure and the screen shot of a scoreboard. The MySQL function must be highly optimized, Caril is a lot of data. I need a complete script with some functional form. Thank you for your proposal.