Question

我正在尝试在Yii v.1 Mysql中进行LEFT加入。有alreday 4个表加入，我也想加入这个表。

$cmd = Yii::app()->db->createCommand();

$selectString .= "table2.dir_pic, table2.pic1, table2.pic2 , table2.pic3 "; 


 $cmd->select($selectString);
  $cmd->from('table1');

$cmd->leftjoin('table2', 'table1.id=table2.user_entry_id');
 $entries = $cmd->queryAll();
        $this->render('index', compact('entries', 'model'));

它提供了一个CDbException

CDbCommand failed to execute the SQL statement: SQLSTATE[42000]: Syntax error or access violation: 1064 You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near '.`dir_pic`, `table2`.`pic1`, `table2`.`pic2`, ' at line 1.

我在mysql（phpmyadmin）

中尝试了这个查询

    SELECT table1.id,table2.dir_pic,table2.pic1,table2.pic2, table2.pic3 FROM 
table1 LEFT JOIN table2 ON table1.id = table2.user_entry_id

它显示正确的输出。但是当我在Yii中尝试时不是。

Answer 1

我找到了解决方案。实际上我在前一个$ selectString查询结束后错过了一个逗号（，）。

Yii v1 Left Join提供CDbException

1 个答案: