php mysql distinct关键字的用法

distinct 禁止重复,下面例子:

//查数据
$sql = "select distinct sex,name,email from  user";//查询语句  注意from不要写错

$result = mysqli_query($link,$sql); //query()链接上数据库执行语句

    if(mysqli_num_rows($result)>0){//是否查询的结果>0
        while ($row = mysqli_fetch_assoc($result))//循环输出
        {
            echo "邮箱:" .$row['name'] .",";
            echo "邮箱:" .$row['email'] .",";
            echo "姓名:" .($row['sex'] == '0' ? '女' : '男')."<hr>";
        };
    }else{
        echo '错误';
    }
      

结果是