Das ist meine MySQL-Abfrage, wie schreibe ich in CodeIgniter?

Question

Dies ist meine MySQL-Abfrage und wie man schreibt es in CodeIgniter

SELECT distinct a.user_name 
FROM wl_customers a 
    INNER JOIN tbl_bid b ON a.customers_id = b.customers_id 
    INNER JOIN tbl_portfolio c ON b.portfolio_id=c.portfolio_id 
WHERE c.portfolio_id='16' 

Answer 1

$query = $this->db->query(" 
SELECT MAX(A.BID),B.* FROM tbl_bid A INNER JOIN wl_customers B ON A.customers_id=B.customers_id 
WHERE portfolio_id='16' 
"); 

Answer 2

Versuchen Sie, wie this.Use zwischen Tabellen verbinden.

<?php 

$query = $this->db->distinct() 
     ->select('a.user_name') 
     ->from('wl_customers as a'); 
     ->join('tbl_bid as b','a.customers_id=b.customers_id'); 
     ->join('tbl_portfolio as c','b.portfolio_id=c.portfolio_id') 
     ->where('c.portfolio_id',16) 
     ->get(); 
print_r($query->result_array);//array of your records 

für mehr Lese docs https://www.codeigniter.com/userguide3/database/query_builder.html

Answer 3

aktive Aufzeichnungen

$this->db->select('distinct a.user_name'); 
    $this->db->from('wl_customers as a'); 
    $this->db->join('tbl_bid as b','a.customers_id=b.customers_id'); 
    $this->db->join('tbl_portfolio as c','b.portfolio_id=c.portfolio_id'); 
    $this->db->where('c.portfolio_id',16,false); 
    $query = $this->db->get();