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                            IPV4地址,人們經常用varchar(15)列來存儲IP地址,然而,它們實際上是32位無符號整數,不是字符串

用小數點將地址分成四段的表示方法只是為了讓人們閱讀容易.所以應該用無符號整數存儲IP地址.

mysql提供`INET_ATON()`和`INET_NTOA()`函數在這兩種表示方法之間轉換


                    
                
        
                
            
        
                
    
                
    
                
        
                
    
                

                







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