Question

我想在CodeIgniter中实现以下mysql语句。

select * from table_name 
         where deleted = 0 and (id = "18" or name = "efgh" or imei = "1244");

我在CodeIgniter中编写了以下语句：

$this->db->where('deleted', 0);
$this->db->or_where('id', $this->table_name->id);
$this->db->or_where('imei', $this->table_name->imei);
$this->db->or_where('name', $this->table_name->name);
$result= $this->db->get('table_name')->result();

但这两个陈述给出了不同的结果。请问任何人请指出CodeIgniter语句中的错误？谢谢。

Answer 1

请使用： -

   $where = "deleted='0' AND (id='18' OR name='efgh' OR imei='1244')";
   $this->db->where($where);
   $result= $this->db->get('table_name')->result();

更多详情您可以访问： -

http://ellislab.com/codeigniter/user-guide/database/active_record.html

Answer 2

我会用

$this->db->where('deleted', 0);
$this->db->where("(id='18' OR name='efgh' OR imei='1244')", NULL, FALSE);
$result = $this->db->get('table_name')->result();

干杯，

Answer 3

之前我遇到过同样的问题。

我可以找出$this->db函数。

我修改了system/database/DB_active_rec.php _compile_select()函数

原文：第1746行

if (count($this->ar_like) > 0) {
  if (count($this->ar_where) > 0) {
    $sql .= "\nAND ";
  }
  $sql .= implode("\n", $this->ar_like);
}

我的更改：

if (count($this->ar_like) > 0) {
  if (count($this->ar_where) > 0) {
    $sql .= "\nAND ("; // open parenthesis for where and like command
  }
  $sql .= implode("\n", $this->ar_like);
  if (count($this->ar_where) > 0) {
    $sql .= "\n)"; // close parenthesis and sample sql text > WHERE column = x AND (LIKE QUERIES)
  }
}

Answer 4

是activerecord有问题使用或，如果你使用activerecord它不会添加开始和结束括号或条件然后比较和你的查询将是这样的

select * from table_name where deleted = 0 and id="18" or name = "efgh" or imei = "1244";

使用它

$where = 'deleted = 0 and (id="18" or name = "efgh" or imei = "1244")';

$this->db->where($where);

Answer 5

There is two way to do the same thing.
first 
$condition = "deleted='0' AND (id='18' OR name='efgh' OR imei='1244')";
$this->db->where($condition);
$result= $this->db->get('table_name')->result();
 and 
write your costume query 

$this->db->query('YOUR QUERY HERE');

希望它会对你有所帮助。

AND和OR子句的组合

5 个答案: