Question

**反引号（波形符号）自动添加iniside日期 Codeigniter中的SQL查询格式：**

$this->db->select("DISTINCT(b.dname),DATE_FORMAT(atime,' %d %M %Y 
%h:%i:%s') as at");
$this->db->join('rb b','b.list_id = al.afid','LEFT');
$this->db->from('rfal al');
$this->db->where('al.afid ='.$fileid);
$this->db->where('al.is_back',1);
$this->db->order_by('at','DESC');
$this->db->limit(5);
$query= $this->db->get();

**Will Get an error as follows**  
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 ':%i:%s') as accessed_time FROM (`rfal` al) LEFT JOIN  at line 1  

SELECT DISTINCT(b.dname), DATE_FORMAT(atime, `'` %d %M %Y %h:%i:%s')   
as at FROM (`rfal` al) LEFT JOIN `rb` b ON `b`.`l_id` =   
`al`.`afid` WHERE `al`.`afid` =1106 AND `al`.`is_back` = 1 ORDER BY     
`at` DESC LIMIT 5

Answer 1

另一种解决方案

来自文档：

$ this-＆gt; db-＆gt; select（）接受可选的第二个参数。如果将其设置为FALSE，CodeIgniter将不会尝试使用反引号来保护您的字段或表名称。如果您需要复合选择语句，这非常有用。

Answer 2

在查询之前尝试此行：

$this->db->_protect_identifiers=false;

请注意，这将删除此查询的所有反引号

Answer 3

解决方案如下：

在数据库配置文件./application/config/database.php中使用默认设置向阵列添加新元素。

$db['default']['_protect_identifiers']= FALSE;

Codeigniter在日期格式的sql查询中自动添加反引号（``）/ tilde符号

3 个答案: