php - Yii CDBCriteria 复杂连接查询

Question

我有 3 张 table :

1. 银行
2. 银行详细信息
3. bank_bank_details

它们之间的关系:

银行模式:

public function relations() {
        return array(
            'bankBankDetails' => array(self::HAS_MANY, 'BankBankDetails', 'bank_id'),
        );
}

银行详细信息模型:

public function relations() {
        return array(
            'bankBankDetails' => array(self::HAS_MANY, 'BankBankDetails', 'bank_details_id'),
        );
    }

bank_bank_details 模型:

public function relations()
    {
        return array(
            'bank' => array(self::BELONGS_TO, 'Bank', 'bank_id'),            
            'bankDetails' => array(self::BELONGS_TO, 'BankDetails', 'bank_details_id'),
        );
    }

我想在bank_details模型的管理 View 中获取银行详细信息，例如bank_name、ifsc等信息。

我生成的正常 SQL 查询运行得很好:

SELECT b.name
FROM bank b
LEFT JOIN bank_bank_details bbd ON bbd.bank_id = b.bank_id
LEFT JOIN bank_details bd ON bd.bank_details_id = bbd.bank_details_id
WHERE bd.bank_details_id = bbd.bank_details_id
LIMIT 0 , 30

现在我只想将其与 Yii CDBCriteria 集成，但它对我不起作用。请检查以下代码:

public function search() {
        $criteria = new CDbCriteria;    
//        select b.name
//        from bank b
//        left join bank_bank_details bbd
//        on bbd.bank_id = b.bank_id
//        left join bank_details bd on bd.bank_details_id = bbd.bank_details_id
//        WHERE bd.bank_details_id = bbd . bank_details_id;

        $criteria->compare('bank_details_id', $this->bank_details_id);
        $criteria->compare('first_holder_name', $this->first_holder_name, true);
        $criteria->compare('nominee1', $this->nominee1, true);
        $criteria->select = 'b.name';
        $criteria->join = 'LEFT JOIN bank_bank_details bbd ON bbd.bank_id = b.bank_id ';
        $criteria->join .= 'LEFT JOIN bank_details bd ON bd.bank_details_id = bbd.bank_details_id';
        $criteria->condition = 'bd.bank_details_id = bbd.bank_details_id';

        return new CActiveDataProvider($this, array(
            'criteria' => $criteria,
            'pagination' => array(
                'pageSize' => 10,
            ),
        ));
    }

错误: 发现错误 500 CDbCommand 未能执行 SQL 语句: SQLSTATE[42S22]: 未找到列:1054 'on 子句' 中的未知列 'b.bank_id'

如有任何帮助，我们将不胜感激。

Answer 1

您需要为表设置别名，如下所示:$criteria->alias='b'; 或使用默认别名“t”而不是“b”

阅读更多内容 http://www.yiiframework.com/doc/api/1.1/CDbCriteria#alias-detail