SQL用於顯示查詢字段明智

Question

我已經寫了一個SQL來獲取每個用戶在數據庫上的票證信息。

select u.realname,count(t.id) as ct,t.Status 
from Tickets t,Users u 
where u.id=t.Owner and (t.status='New' or t.status='Stalled' or t.status='Open') 
group by u.realname,t.status; 

它給出這樣

| Enoch Root   |  1 | new  | 
| Enoch Root   |  1 | stalled | 
| xyz Chan   |  1 | open | 
| Jim     | 22 | stalled | 

但什麼我期待的輸出是對身份的用戶

像

 open stalled new 
root 1  10  14 

請讓我知道

Answer 1

select u.realname, 
    sum(if(t.status = 'New', 1, 0)) as new, 
    sum(if(t.status = 'Stalled', 1, 0)) as stalled, 
    sum(if(t.status = 'Open', 1, 0)) as open 
from Tickets t, Users u 
where 
    u.id = t.Owner and 
    t.status in ('New', 'Stalled', 'Open') 
group by u.realname 

Answer 2

SELECT 
    u.realname, 
    SUM(t.status='Open') AS `Open`, 
    SUM(t.status='Stalled') AS `Stalled`, 
    SUM(t.status='New') AS `New` 
FROM Tickets t INNER JOIN Users u 
    ON u.id=t.Owner 
WHERE (t.status='New' OR t.status='Stalled' OR t.status='Open') 
GROUP BY 
    u.id, u.realname