Question

我的'期间'表看起来像这样

 _________________________________________
| startdate | enddate | personID | points |
| 01/01/15  | 01/15/15|     1    |   5    |
| 01/01/15  | 01/15/15|     2    |   5    |
| 01/01/15  | 01/15/15|     3    |   5    |
| 01/16/15  | 01/30/15|     4    |   5    |
| 02/01/15  | 02/15/15|     1    |   5    |
| 02/01/15  | 02/15/15|     5    |   5    |

现在在我的视图文件中，我有2个选择输入，用户可以选择现有的startdate，另一个是enddate。当用户是personID＃1时怎么可能？

If user whose UserID is 1, selected  
 startdate = 01/01/15  
 enddate = 02/15/15  
...it would display 10 as the total points  
If userID 1 selected  
 startdate = 02/01/15  
 enddate = 02/15/15  
...it would display 5 as the total points?

Answer 1

我会尝试这样的事情：

function model_method($data) {
    $this->db->select("COUNT(points)");
    $this->db->from('periods');
    $this->db->where("personID", $data['userID']);
    $this->db->where("startDate >=", $data['startDate']);
    $this->db->or_where("enddate <=", $data['endDate']);
    $query = $this->db->get();
    return $query->result();
}

通过日期集运行查询

1 个答案: