php codeigniter选择查询

Question

This is the my original SQL query

select 'car' as type,id,title,status from car_product
union
select 'van' as type,id,title,status from van_product

Now I want to run this query using CodeIgniter, so I try to use this one

$this -> db -> select('`car` As type,id,title,status');
$this -> db -> from('car_product');
$this -> db -> where('status =',$status);
$query_car = $this -> db -> get()->result();

$this -> db -> select('`van` As type,id,title,status');
$this -> db -> from('van_product');
$this -> db -> where('status =',$status);
$query_van = $this -> db -> get()->result();

return array_merge($query_car, $query_van);

but it's not working, please can you help?

Answer 1

You can use ->query() method directly without using queryBuilder for this.

$query = $this->db->query("select 'car' as type,id,title,status from car_product union    select 'van' as type,id,title,status from van_product");

Then you can deal it as you deal with your other queries

e.g:

return $query->result();