SQL查詢問題加入

我有表Creditcard，Childcreditcard1，Childcreditcard2SQL查詢問題加入

Childcreditcard1

CreditcardID TranscationDatetime 
22222132132 2010-04-11 12:36:10.210 
22222132134 2011-04-11 12:36:10.210 
12364132122 2019-04-11 12:36:10.210 
45677132124 2011-04-11 12:36:10.210 
45677132124 2012-04-11 12:36:10.210

Childcreditcard2

CreditcardID TranscationDatetime 
22222132132 2010-04-11 12:36:10.210 
22222732134 2011-04-11 12:36:10.210 
12364132192 2019-04-11 12:36:10.210

MasterCreditcard

CreditcardID   primaryCreditID 
22222132132  22222132132    
22222132134  22222132132    
12364132122  12364132122   
45677132124  45677132124 
45677232124  45677232124  
78567723212  78567723212 
23677232124  23677232124 
45678944343  45678944343 
22222732134  22222732134 
12364132192    12364132192

現在這三個表我需要得到creditcardID僅從MasterCreditcard任何CreditcardID我們在Childcreditcard1，Childcreditcard2表將永遠存在於MasterCreditcard表

結果應該是表應該喜歡這個

這不匹配

45677232124 
78567723212 
23677232124 
45678944343

我的查詢：

select 
     distinct(cc.CreditcardID) 
from 
     MasterCreditcard CC 
inner JOIN 
     Childcreditcard1 c1 ON CC.CreditcardID <> c1.CreditcardID 
inner JOIN 
     Childcreditcard2 c2 ON CC.CreditcardID <> c2.CreditcardID

我想這樣，但是這給結果所有CreditcardID在MasterCreditcard表這是不對的

來源

2012-04-11 happysmile

就是答案對你有幫助嗎？ – 2012-04-11 13:17:03

試試這個或許對你

select distinct(cc.CreditcardID) from MasterCreditcard CC 
left JOIN Childcreditcard1 c1 ON CC.CreditcardID =c1.CreditcardID 
left JOIN Childcreditcard2 c2 ON CC.CreditcardID =c2.CreditcardID 
where c1.CreditcardID is null or c2.CreditcardID is null

工作，我的答案是基於該圖像，第二圖像左外連接的情況下

alt text

來源

2012-04-11 12:53:08

有一個小的變化 – happysmile 2012-04-12 11:21:29

@happysmile - 可以說這是嗎？ – 2012-04-12 11:22:33

從MasterCreditcard CC中選擇distinct（cc.CreditcardID）left outer JOIN Childcreditcard1 c1 ON CC.CreditcardID = c1.CreditcardID left outer JOIN Childcreditcard2 c2 ON CC.CreditcardID = c2.CreditcardID where c1.CreditcardID is null andc2.CreditcardID is null – happysmile 2012-04-13 16:02:47

SQL查詢問題加入

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