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                            ### #SQL調試
使用該方式，可以不執行sql,直接打印sql語句，并終止程序。
**函數：**
debug($isDebug = false)；
**參數說明：**
$isDebug 是否開啟調試模式
**返回值：**
本對象，支持鏈級操作。

**案例**
~~~
設置別名
$model=new Model('user');
$model->debug(true)->select();

~~~
                    
                
        
                
            
        
                
    
                
    
                
        
                
    
                

                







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