계층 적 쿼리는

Question

나는 2 열 이름과 리더

login_user sponsered_id right_left 
    test1  admin   Right 
    test2  admin   Left 
    test3  test1   Right 
    test4  test1   Left 
    test43  test2   Left 
    test44  test3   Left 

내가

function display_children($parent, $level) { 

    // retrieve all children of $parent 

    $result = mysql_query('SELECT name, login_user, right_left FROM members_list '. 

          'WHERE sponsered_id="'.$parent.'";'); 


    while ($row = mysql_fetch_array($result)) { 

     // indent and display the title of this child 


    echo '<tr><td>'. 
    $row['login_user'].' </td><td> '.$row['right_left'].' </td><td> '.$row['sponsered_id']. 
    "</td></tr>"; 


     // call this function again to display this 

     // child's children 

     display_children($row['login_user'], $level+1); 

    } 

} 

echo display_children('admin',0); 

하지만 잘 출력을 점점 기능이 .... 그주는 테이블이

로 나 출력

test1 Right admin 
test3 Right test1 
test44 Left test3 
test4 Right test1 
test2 Left admin 
test43 Left test2 

필요 출력 `오른쪽 test2`의 doens '

test1 Right admin 
test2 Left admin 

test3 Right test1 
test4 Left test1 

     Right test2 
test43 Left test2 

     Right test3 
test44 Left test3 

Answer 1

이

SELECT 
    login_user, 
    right_left, 
    sponsered_id 
FROM (
    SELECT 
     login_user, 
     right_left, 
     sponsered_id 
    FROM 
     members_list 

    UNION 

    SELECT 
     NULL, 
     CASE when max(right_left) ='Left' THEN 'Right' ELSE 'Left' END AS right_left, 
     sponsered_id 
    FROM 
     members_list 
    GROUP BY 
     sponsered_id 
    HAVING count(sponsered_id) < 2 
) as temp 
ORDER BY 
    sponsered_id, 
    right_left 

Answer 2

이

select login_user , right_left , sponsered_id from (

    select login_user , right_left , sponsered_id 
    from members_list 
    union all 

    select login_user , if(right_left ='left', 'right', 'right') right_left , sponsered_id 
    from members_list 

)t 
    group by sponsered_id, right_left 
    order by login_user 

DEMO HERE