Question

在Yii2中，我在控制器中使用以下代码：

$licenses = License::find()
        ->select('`license`.*, `customer`.*')
        ->orderBy('added_on')
        ->innerJoin('customer', '`customer`.`id` = `license`.`customer_id`')
        ->where([
            'active' => '1'
        ])
        ->andWhere(['not', ['customer_id' => null]])
        ->andWhere("last_changed > last_confirmed")
        ->all();

    return $this->render('not-handled', [
        'licenses' => $licenses
    ]);

哪个输出以下查询（来自Yii2调试工具栏）：

SELECT `license`.*, `customer`.* FROM `license` INNER JOIN `customer` ON `customer`.`id` = `license`.`customer_id` WHERE ((`active`='1') AND (NOT (`customer_id` IS NULL))) AND (last_changed > last_confirmed) ORDER BY `added_on`

在数据库上运行此查询会返回2行，这是正确的。但是，从$ licenses转储数据时，它只返回一行。当我更改许可证表中的customer_id时，它会返回两行。因此，即使查询返回正确的值，Yii2也会丢弃一行。

我经常搜索，但是我无法找到解决问题的方法。提前谢谢！

编辑1

在我的许可证模型中，我有以下功能。删除此功能仍会导致同样的问题，但它会获得另一行（它反转）。虽然还是一排。

public function getCustomer()
{
    return $this->hasOne(Customer::className(), ['id' => 'customer_id']);
}

编辑2

以下是转储表。当我将id为3和4的行上的customer_id更改为其他内容时（在转储中它们都是2，一旦我将其中一个更改为另一个值），它会返回两行。

DROP TABLE IF EXISTS `customer`;
CREATE TABLE `customer` (
  `id` int(11) NOT NULL AUTO_INCREMENT,
  `name` varchar(70) NOT NULL,
  `streetname` varchar(100) NOT NULL,
  `house_number` int(20) NOT NULL,
  `city` varchar(100) NOT NULL,
  `postal_code` varchar(7) NOT NULL,
  `email` varchar(100) NOT NULL,
  `username` varchar(45) NOT NULL,
  `password` varchar(45) NOT NULL,
  PRIMARY KEY (`id`)
) ENGINE=InnoDB AUTO_INCREMENT=3 DEFAULT CHARSET=utf8;

INSERT INTO `customer` VALUES (1,'Dummyuser1','Dummystreet1',1,'Dummtcity1','1111 DE','dummy1@hotmail.com','dummy1','dummy1'),(2,'Dummyuser2','Dummestreet2',2,'Dummycity2','2222 RR','dummy2@hotmail.com','dummy2','dummy2');

DROP TABLE IF EXISTS `license`;
CREATE TABLE `license` (
  `id` int(11) NOT NULL AUTO_INCREMENT,
  `license` varchar(29) NOT NULL,
  `added_on` datetime NOT NULL,
  `license_activated_on` datetime NOT NULL,
  `last_changed` datetime NOT NULL,
  `last_confirmed` datetime NOT NULL,
  `requested_by` varchar(70) NOT NULL,
  `changed_by` varchar(70) NOT NULL,
  `active` enum('0','1') NOT NULL DEFAULT '0',
  `customer_id` int(10) NOT NULL,
  `costs` int(10) NOT NULL,
  `article_type` enum('1','3') NOT NULL DEFAULT '1',
  `invoice_number` int(10) NOT NULL,
  `invoice_date` datetime NOT NULL,
  PRIMARY KEY (`id`),
  UNIQUE KEY `license_UNIQUE` (`license`),
  UNIQUE KEY `id_UNIQUE` (`id`)
) ENGINE=InnoDB AUTO_INCREMENT=8 DEFAULT CHARSET=utf8;


INSERT INTO `license` VALUES (1,'DFDFD-DFDFD-DFDFD-QASDF','2016-04-22 17:06:57','0000-00-00 00:00:00','0000-00-00 00:00:00','0000-00-00 00:00:00','Wessel','','1',0,30,'1',0,'0000-00-00 00:00:00'),(2,'ABCDE-FGHIJ-KLMNO-PQRST','2016-04-22 17:36:25','0000-00-00 00:00:00','2016-04-22 17:36:25','2016-04-22 18:00:00','Wesel','Wessel2','1',1,400,'3',34342,'2016-04-22 17:36:25'),(3,'QWERT-YUIOP-ASDFG-HJKLZ','2016-04-23 10:51:19','2016-04-23 10:51:19','2016-04-23 10:51:19','0000-00-00 00:00:00','Wessel Dummy','','1',2,40,'1',0,'0000-00-00 00:00:00'),(4,'QWERT-YUIOP-ASDFG-AAAAA','2016-04-23 10:51:19','2016-04-23 10:51:19','2016-04-23 10:51:19','0000-00-00 00:00:00','Wessel Dummy1','d','1',2,40,'1',0,'0000-00-00 00:00:00'),(5,'ABCDE-FGHIJ-DD4NO-PQRST','2016-04-22 17:36:25','0000-00-00 00:00:00','2016-04-22 17:36:25','2016-04-22 18:00:00','Wesel','Wessel2','1',2,400,'3',34342,'2016-04-22 17:36:25'),(7,'DFDFD-DFDFD-DFDFD-QQQQQ','2016-04-22 17:06:57','0000-00-00 00:00:00','0000-00-00 00:00:00','0000-00-00 00:00:00','Wessel','','1',0,30,'1',0,'0000-00-00 00:00:00');

Answer 1

这不是答案，而是检查问题根源的建议

可能是由activeQuery生成的查询与你在db console中起诉的不一样

尝试获取yii2使用的命令并检查是否与预期相同

$dbcommand = License::find()
    ->select('`license`.*, `customer`.*')
    ->orderBy('added_on')
    ->innerJoin('customer', '`customer`.`id` = `license`.`customer_id`')
    ->where([
        'active' => '1'
    ])
    ->andWhere(['not', ['customer_id' => null]])
    ->andWhere("last_changed > last_confirmed")->createCommand();

尝试

 echo $dbCommand->sql;

尝试

foreach($licenses as $key=> $value) {
  var_dump($value->license );
}

你获得了多少结果？如果您使用单行，这与您使用License :: find（）的事实有关，并且查询的许可证部分仅返回模型，因为这两个记录的部分相同

然后尝试使用命令

use Yii;

$query= \Yii::$app->db->createCommand(
  "SELECT `license`.*, `customer`.* 
   FROM `license` 
   INNER JOIN `customer` ON `customer`.`id` = `license`.`customer_id` 
   WHERE ((`active`='1') 
   AND (NOT (`customer_id` IS NULL))) 
   AND (last_changed > last_confirmed) 
   ORDER BY `added_on`;");

$licenses = $query->queryAll();

Answer 2

用于调试ActiveQuery我会建议：

$licenses = License::find()
        ->select('`license`.*, `customer`.*')
        ->orderBy('added_on')
        ->innerJoin('customer', '`customer`.`id` = `license`.`customer_id`')
        ->where([
            'active' => '1'
        ])
        ->andWhere(['not', ['customer_id' => null]])
        ->andWhere("last_changed > last_confirmed")
//        ->all()
;

var_dump($licenses->prepare( Yii::$app->db->queryBuilder )->createCommand()->rawSql);

不过，我猜你已经为2个客户分配了1个许可证，因此你获得了1个许可证模型和2个分配给同一许可证的客户。

Yii2查询返回2行，模型只返回一行

2 个答案: