3

如何在 Codeigniter 查询函数中获取两个日期之间的值？这是我的模型和示例代码。

function get_promo() {
    $today = date('Y-m-d');
    $query = $this->db->query('SELECT FROM tbl_event WHERE event_id = $id AND event_startdate <= $today
    AND event_enddate >= $today');
    return $query;
}

但它不起作用，这是我得到的错误

A Database Error Occurred

Error Number: 1064

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'FROM tbl_event WHERE event_id = 36 AND event_startdate <= 2011-06-09 ' at line 1

SELECT FROM tbl_event WHERE event_id = 36 AND event_startdate <= 2011-06-09 AND event_enddate >= 2011-06-09

Filename: C:\xampp\htdocs\hotel\system\database\DB_driver.php

Line Number: 330
4

5 回答 5

7

我认为您需要围绕您的日期（即“2011-06-08”）进行引用。试试这个

function get_promo() {
    $today = date('Y-m-d');  
    $query = $this->db->query(
        "SELECT FROM tbl_event WHERE event_id = {$id} AND event_startdate <= '{$today}'
        AND event_enddate >= '{$today}'");
    return $query;
}

如果您的列是类型event_startdate，但您只对日期部分感兴趣，您可以执行 `DATE(event_enddate) 来提取日期部分event_enddateDATETIME

于 2011-06-09T08:43:23.897 回答
3 
$this->db->where('date_start <=',date('Y-m-d'));
$this->db->where('date_end >=',date('Y-m-d'));
$query = $this->db->get('table');
于 2017-05-27T18:26:59.753 回答
1

我认为您需要使用 date_format()，此链接中的更多信息http://dev.mysql.com/doc/refman/5.5/en/date-and-time-functions.html#function_date-format。

试试这个代码：

$today = date('Y-m-d');
$query = $this->db->query("SELECT FROM tbl_event WHERE event_id = $id AND DATE_FORMAT(event_startdate ,'%Y-%m-%d') >= DATE_FORMAT($today ,'%Y-%m-%d') AND DATE_FORMAT(event_enddate ,'%Y-%m-%d') <= DATE_FORMAT($today ,'%Y-%m-%d')");
于 2011-06-09T05:51:44.603 回答
1

查看错误，您的查询似乎没有正确转义。添加单引号或双引号来修复它。检查@danneth 的答案。使用简单安全的查询绑定，甚至更多使用Active Record。以下是基于您的代码的绑定和活动记录的示例。

查询绑定示例

    $today = date('Y-m-d');
    $sql = 'SELECT 
  * 
FROM
  tbl_event 
WHERE event_id = ? 
  AND event_startdate <= ? 
  AND event_enddate >= ?';
    $query = $this->db->query($sql, array($id, $today, $today));
return $query;

活动记录示例

$query = $this->db
        ->select('*')->from('tbl_event')
        ->where(array(
            'event_id' => $id,
            'event_startdate <= ' => $today,
            'event_enddate >= ' => $today
        ))
        ->get();
return $query;

追加->result()等->result_array()以在对象或数组中获取结果。查看 Codeigniter数据库用户指南了解更多信息。

于 2011-06-09T07:03:50.607 回答
0

您需要使用正确的格式。试试这个：

$todaystart = date('Y-m-d 00:00:00');  
$todayend = date('Y-m-d 23:59:59');  
       $query = $this->db->query('SELECT FROM tbl_event WHERE event_id = $id AND event_startdate <= ? AND event_enddate >= ?', array($todaystart, $todayend));

编辑：您的查询是错误的。做这个：

$todaystart = date('Y-m-d 00:00:00');  
$todayend = date('Y-m-d 23:59:59');  
       $query = $this->db->query('SELECT * FROM tbl_event WHERE event_id = $id AND event_startdate <= ? AND event_enddate >= ?', array($todaystart, $todayend));
于 2011-06-09T05:04:22.617 回答