SQL從IN（）中的每個項目獲取結果

Question

嗨，有人能幫助我嗎？

我有此查詢：

SELECT DISTINCT(CAMPAIGN), 
    count(STATUS) 
FROM  
C18_101 INNER JOIN CLIENT_10 ON C18_101.ID = CLIENT_10.ID 
WHERE CAMPAIGN in ('Batch 1','Batch 2','Batch 3','Batch 4','Batch 5') AND STATUS = 'Pending' 
GROUP BY CAMPAIGN,STATUS 

結果看起來是這樣的：

Batch 2  241 

Batch 3  321 

Batch 4  575 

Batch 5  429 

我還需要BATCH1結果，即使是沒有的。

Answer 1

SELECT 
    X.CAMPAIGN, 
    count(STATUS) 
FROM 
    (SELECT DISTINCT CAMPAIGN FROM C18_101) X 
    LEFT JOIN 
    CLIENT_10 C ON X.ID = C.ID AND C.STATUS = 'Pending' 
GROUP BY 
    X.CAMPAIGN 

1. 你要麼GROUP BY或聚合，而不是兩個
2. 您不同的前JOIN，以確保您的計數是每個廣告活動的正確
3. 你真的需要一個活動過濾器？如果是這樣，請添加到派生表X

Answer 2

SELECT CAMPAIGN, 
    count(STATUS) 
FROM C18_101 
LEFT JOIN CLIENT_10 ON C18_101.ID = CLIENT_10.ID AND STATUS = 'Pending' 
WHERE CAMPAIGN in ('Batch 1','Batch 2','Batch 3','Batch 4','Batch 5') 
GROUP BY CAMPAIGN