日期:2014-05-16  浏览次数:20574 次

sql怎么把相同字段的内容合成一条记录
表名:Pid_Area_Phone
      AID                                           UserName                                      Phone             
        1                                                    小李                     123456     
        1                                                    小樱                     456789 
        1                                                    小南                     321654    
        2                                                    小李                     123456    
        2                                                    小樱                     456789  
        2                                                    小南                     321654    
  怎么变成
   AID                        &