SQL：在查詢中使用兩個LEFT OUTER JOIN

Question

我有這樣的查詢;

SELECT a.ID, a.TURQ_ID, a.UNVAN, a.TIP, a.AKTOR, 
     a.GSM_ALAN, a.GSM_TEL, a.IS_ALAN, a.IS_TEL, 
     a.IS_EXT, a.EV_ALAN, a.EV_TEL, a.ADRES, 
     a.TEMSILCI_ACK, 
     (CASE WHEN A.YAZ_ADRES IS NULL 
     THEN (B.IS_ADRES1 +' '+B.IS_ADRES2) 
     ELSE A.YAZ_ADRES END) 
     COLLATE DATABASE_DEFAULT AS YAZ_ADRES , A.SEHIR, A.PS, A.MEMO 
FROM PROSPECT_MASTER A 
LEFT OUTER JOIN YAZ..MARDATA.S_MUSTERI B 
ON A.ID IN (B.TC_KIM_NO, B.VERGI_NO) // Result 12730 rows 

我想補充另一個LEFT OUTER在我這樣的查詢JOIN;

SELECT a.ID, a.TURQ_ID, a.UNVAN, a.TIP, a.AKTOR, 
     a.GSM_ALAN, a.GSM_TEL, a.IS_ALAN, a.IS_TEL, 
     a.IS_EXT, a.EV_ALAN, a.EV_TEL, a.ADRES, 
     (CASE WHEN a.TEMSILCI_ACK IS NULL THEN C.TEMSILCI_ACK ELSE A.TEMSILCI_ACK END) COLLATE DATABASE_DEFAULT AS TEMSİLCİ, 
     (CASE WHEN A.YAZ_ADRES IS NULL 
     THEN (B.IS_ADRES1 +' '+B.IS_ADRES2) 
     ELSE A.YAZ_ADRES END) 
     COLLATE DATABASE_DEFAULT AS YAZ_ADRES , A.SEHIR, A.PS, A.MEMO 
FROM PROSPECT_MASTER A 
LEFT OUTER JOIN YAZ..MARDATA.S_MUSTERI B 
ON A.ID IN (B.TC_KIM_NO, B.VERGI_NO) 
LEFT OUTER JOIN YAZ..MARDATA.T_TEMSILCI_KOD C 

但是第二個查詢在最後一行出現錯誤。

這個sutiation的正確語法是什麼？

Answer 1

OUTER JOIN總是需要ON子句來指定要加入的列。

可能不存在的條件，但你需要鏈接到某種參考的其他表

Answer 2

您錯過了ON搜索條件。