How to select rows where column value IS NOT NULL using CodeIgniter's ActiveRecord?

Question

I\'m using CodeIgniter\'s Active Record class to query the MySQL database. I need to select the rows in a table where a field is not set to NULL:

$this->d         


        

Answer 1

Much better to use following:

For is not null:

where('archived IS NOT NULL', null);

For is null:

where('archived', null);

Answer 2

$this->db->or_where('end_date IS', 'NULL', false);

Answer 3

You can do (if you want to test NULL)

$this->db->where_exec('archived IS NULL) 

If you want to test NOT NULL

$this->db->where_exec('archived IS NOT NULL) 

Answer 4

The Active Record definitely has some quirks. When you pass an array to the $this->db->where() function it will generate an IS NULL. For example:

$this->db->where(array('archived' => NULL));

produces

WHERE `archived` IS NULL 

The quirk is that there is no equivalent for the negative IS NOT NULL. There is, however, a way to do it that produces the correct result and still escapes the statement:

$this->db->where('archived IS NOT NULL');

produces

WHERE `archived` IS NOT NULL