Yii2 什么'；ActiveDataProvider和SQLDataProvider之间的区别是什么？

我有点困惑。我想知道Yii2

ActiveDataProvider

和

SQLDataProvider

之间有什么区别？我在文档中查找它，但也找不到

有人能解释一下我什么时候应该用这个或那个吗？这两者有什么区别

---

谢谢您的时间。

SqlDataProvider

使用原始SQL语句，该语句用于获取所需数据，

ActiveDataProvider

可以使用

yii\db\Query

或

yii\db\ActiveQuery

对象

---

SqlDataProvider

示例：

$provider = new SqlDataProvider([
   'sql' => 'SELECT * FROM post WHERE status=:status',   //HERE
   'params' => [':status' => 1],
   'totalCount' => $count,
   'pagination' => [
       'pageSize' => 10,
   ],
   'sort' => [
       'attributes' => [
           'title',
           'view_count',
           'created_at',
       ],
   ],
]);

$query = Post::find()->where(['status' => 1]);     // ActiveQuery here

$provider = new ActiveDataProvider([
    'query' => $query,                // and here
    'pagination' => [
        'pageSize' => 10,
    ],
    'sort' => [
        'defaultOrder' => [
            'created_at' => SORT_DESC,
            'title' => SORT_ASC, 
        ]
    ],
]);

---

ActiveDataProvider

示例：

$provider = new SqlDataProvider([
   'sql' => 'SELECT * FROM post WHERE status=:status',   //HERE
   'params' => [':status' => 1],
   'totalCount' => $count,
   'pagination' => [
       'pageSize' => 10,
   ],
   'sort' => [
       'attributes' => [
           'title',
           'view_count',
           'created_at',
       ],
   ],
]);

$query = Post::find()->where(['status' => 1]);     // ActiveQuery here

$provider = new ActiveDataProvider([
    'query' => $query,                // and here
    'pagination' => [
        'pageSize' => 10,
    ],
    'sort' => [
        'defaultOrder' => [
            'created_at' => SORT_DESC,
            'title' => SORT_ASC, 
        ]
    ],
]);

---

SqlDataProvider

使用原始SQL语句，该语句用于获取所需数据，

ActiveDataProvider

可以采用

yii\db\Query

或

yii\db\ActiveQuery

对象

---

SqlDataProvider

示例：

$provider = new SqlDataProvider([
   'sql' => 'SELECT * FROM post WHERE status=:status',   //HERE
   'params' => [':status' => 1],
   'totalCount' => $count,
   'pagination' => [
       'pageSize' => 10,
   ],
   'sort' => [
       'attributes' => [
           'title',
           'view_count',
           'created_at',
       ],
   ],
]);

$query = Post::find()->where(['status' => 1]);     // ActiveQuery here

$provider = new ActiveDataProvider([
    'query' => $query,                // and here
    'pagination' => [
        'pageSize' => 10,
    ],
    'sort' => [
        'defaultOrder' => [
            'created_at' => SORT_DESC,
            'title' => SORT_ASC, 
        ]
    ],
]);

---

ActiveDataProvider

示例：

$provider = new SqlDataProvider([
   'sql' => 'SELECT * FROM post WHERE status=:status',   //HERE
   'params' => [':status' => 1],
   'totalCount' => $count,
   'pagination' => [
       'pageSize' => 10,
   ],
   'sort' => [
       'attributes' => [
           'title',
           'view_count',
           'created_at',
       ],
   ],
]);

$query = Post::find()->where(['status' => 1]);     // ActiveQuery here

$provider = new ActiveDataProvider([
    'query' => $query,                // and here
    'pagination' => [
        'pageSize' => 10,
    ],
    'sort' => [
        'defaultOrder' => [
            'created_at' => SORT_DESC,
            'title' => SORT_ASC, 
        ]
    ],
]);

---

您能告诉我需要使用该

SqlDataProvider

的情况吗？当我们可以编写

查询

（如第二个示例中所示）时，为什么我们需要编写原始SQL语句呢？

SqlDataProvider可以在您有非常复杂的SQL查询时使用，当乞丐们不知道如何将查询转换为
ActiveQuery
时，他们经常使用它。您能告诉我当我们需要使用
SqlDataProvider
时的情况吗？当我们可以编写
query
（如第二个示例）时，为什么我们需要编写原始SQL语句呢？
SqlDataProvider
可以用于真正复杂的SQL查询，当乞丐不知道如何将查询转换为
ActiveQuery
时，他们经常使用它。