将模型 Codeigniter 转换为 MySQL 查询

Question

how to convert query codeigniter in mysql query

 function per_id($id) { $this->db->where('activity_detail_id',$id); $query=$this->db->get('t_trx_activity_detail'); return $query->result(); }

Answer 1

You can use Mysql query like this

function per_id($id)
{
    $query = $this->db->query("select * from t_trx_activity_detail where activity_detail_id='".$id."'");
    return $query->result();        
} 

Answer 2

you can debug query using CI function.And get mysql query.

Check Query Helper Functions of CI $this->db->last_query()

function per_id($id)
    {

        $this->db->where('activity_detail_id',$id);
        $query=$this->db->get('t_trx_activity_detail');
        echo $this->db->last_query();
        // return $query->result();
    }

Above I added one query helper function in your code

Answer 3

A precise way to get exactly what Codeigniter does is to use

get_compiled_select

for more information take a look here

In your Code - it would look like

function per_id($id)
{
    $this->db->where('activity_detail_id',$id);
    echo $this->db->get_compiled_select("t_trx_activity_detail");
}