如何使用ssp.class使用“WHERE”子句。php的datatable

Okay so i'm trying to display information from my database using jQuery DataTable (DataTables.net). I can get it to work fine displaying the entire table 'notes' but I would like to just display notes that have not been read. So I need to include a WHERE clause somehow but i'm unclear on the best way to go about this.Okay so i'm trying to display information from