How to get random row from MYSQL and how to write it in active records? - mysql

Question

This is my query
"SELECT * FROM package_info ORDER BY RAND() LIMIT 0,3;"
I try to write it in active records like this.
$this->db->select('*');
$this->db->from('package_info');
$this->db->order_by("id", "random");
$this->db->limit(0, 3);
$result = $this->db->get();
But it is not work. How to write this in active record?

Answer 1

Use Below code it will work fine -
$this->db->select('*');
$this->db->from('package_info');
$this->db->order_by("id", "random");
$this->db->limit(3, 0);
$result = $this->db->get()->result();
// shows last executed query
echo $this->db->last_query();
// shows data fetched
echo "<pre>";
print_r( $result );
echo "</pre>";
You can visit on this link to view how queries are used in Codeigniter.
https://www.codeigniter.com/userguide2/database/active_record.html

Answer 2

CodeIgniter does not mandate that you provide 2 arguments for most Query Builder statements, you can do a whole WHERE by doing ->where('1=1') and its perfectly fine.
I'm surprised how many people don't understand method chaining, but I'll show it in my example it is just nicer...
$result = $this->db->select('*')
->from('package_info')
->order_by('rand()')
->limit(0, 3)
>get();
As per above, if you don't have 2 parameters in your original query, dont feel compelled to add two.
Another thing you can do with basic queries like these, is omit the from('package_info') entirely and stick the table name in the ->get('package_info')
If you cant be bothered with query builder you don't need to use it either. I don't for some things (you cannot use UNION with them for one). In this case just use
$result = $this->db->query("SELECT * FROM package_info ORDER BY RAND() LIMIT 0,3;");