加入查詢中在codeigniter中加入兩個數據庫的方式

Question

我想知道在CodeIgniter中加入查詢中加入兩個數據庫的語法。 我沒有辦法加入兩個數據庫。 如果有人有想法，請分享。

Answer 1

首先是添加第二個數據庫的設置與你的項目/配置/ database.php中文件

$db['default'] = array(
'dsn' => '', 
'hostname' => 'localhost', 
'username' => 'root', 
'password' => '', 
'database' => 'db1', 
    'dbdriver' => 'mysqli', 
'dbprefix' => '', 
'pconnect' => FALSE, 
'db_debug' => (ENVIRONMENT !== 'production'), 
'cache_on' => FALSE, 
'cachedir' => '', 
'char_set' => 'utf8', 
'dbcollat' => 'utf8_general_ci', 
'swap_pre' => '', 
'encrypt' => FALSE, 
'compress' => FALSE, 
'stricton' => FALSE, 
'failover' => array(), 
'save_queries' => TRUE); 



$db['defaultdb'] = array(
'dsn' => '', 
'hostname' => 'localhost', 
'username' => 'root', 
'password' => '', 
    'database' => 'dcz', 
'dbdriver' => 'mysqli', 
'dbprefix' => '', 
'pconnect' => FALSE, 
'db_debug' => (ENVIRONMENT !== 'production'), 
'cache_on' => FALSE, 
'cachedir' => '', 
'char_set' => 'utf8', 
'dbcollat' => 'utf8_general_ci', 
'swap_pre' => '', 
'encrypt' => FALSE, 
'compress' => FALSE, 
'stricton' => FALSE, 
'failover' => array(), 
'save_queries' => TRUE); 

然後添加代碼，這些代碼開始

$db1 = $this->load->database('defaultdb',TRUE); 

    $queryfromDB1 = $this->db->get('Table_name')->result(); 

    $queryfromDB2 = $db1->get('Table_name')->result();