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                            >[danger] 查詢多條數據

```
use think\facade\Db;

// 返回值：對象
Db::table('think_user')->select();

// 返回值：二維數組
Db::table('ay_config')->select()->toArray();
```

>[danger] 查詢單條數據

#### find()方法 查詢到數據返回一維數組，查不到數據返回  NULL

```php
Db::table('user')->find(1);

Db::table('user')->where('username', '張三')->find();
```
>[danger] find()方法 必須加查詢條件，否則返回NULL

```php
Db::table('user')->find(); // 返回 NULL
```

                    
                
        
                
            
        
                
    
                
    
                
        
                
    
                

                







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