Codeigniter中的值不是NULL [英] Value IS NOT NULL in codeigniter

查看：134 发布时间：2020/8/11 1:20:03 mysql codeigniter-3

本文介绍了Codeigniter中的值不是NULL的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！

我正在尝试创建以下语句:

I am trying to create the following statement:

select * from donors where field is NOT NULL;

使用codeigniter，我的代码如下:

With codeigniter, my code looks like this:

$where = ['field' => NULL];
$this->db->get_where('table', $where);

，当您看到

when you see documentation You can use $this->db->where() with third parameter set to FALSE to not escape your query. Example:

$this->db->where('field is NOT NULL', NULL, FALSE);

或者您可以使用像这样的自定义查询字符串

Or you can use custom query string like this

$where = "field is  NOT NULL";
$this->db->where($where);

因此您的查询生成器将如下所示:

So your query builder will look like this:

$this->db->select('*');
$this->db->where('field is NOT NULL', NULL, FALSE);
$this->db->get('donors');

$this->db->select('*');
$where = "field is  NOT NULL";
$this->db->where($where);
$this->db->get('donors');

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