SQL查詢計數時question_id是相同的，user_id是不同

Question

我有如下表：

res_id quiz_id  sender_id user_id  question_id points 
    1   1   2  33  20  0 
    2   1   2  34  20  0 
    3   1   2  24  20  0 
    4   2   3  22  2  1 
    5   3   4  3  6  1 

我想要得到的結果，如果quiz_id是相同的三行question_id是相同的，SENDER_ID一樣確保USER_ID是不同的，並且點是0。如果這個條件是1至PHP變量這裏滿意pass值是例如：

res_id quiz_id  sender_id user_id  question_id points 
    1   1   2  33  20  0 
    2   1   2  34  20  0 
    3   1   2  24  20  0 

Answer 1

的「1〜PHP的變量如果滿足該條件時通過值」是不我很清楚（你只是想知道有三個（或更多）行滿足您的查詢？）但查詢應該是類似於

SELECT 
    count(*) 
FROM tab t1 
    JOIN tab t2 ON(t1.quiz_id = t2.quiz_id)AND(t1.question_id = t2.question_id)AND(t1.sender_id = t2.sender_id) 
    JOIN tab t3 ON(t1.quiz_id = t3.quiz_id)AND(t1.question_id = t3.question_id)AND(t1.sender_id = t3.sender_id) 
WHERE(t1.user_id <> t2.user_id)AND(t2.user_id <> t3.user_id)AND(t1.user_id <> t3.user_id) 
     AND(t1.points = 0)AND(t2.points = 0)AND(t3.points = 0) 
GROUP BY t1.quiz_id, t1.sender_id, t1.question_id