我想選擇數據不存在於另一個表中，但不工作

Question

我想從表中選擇數據不存在於另一個表中，但它不工作，我認爲在語法上有一個錯誤WHERE NOT EXISTS請指教解決這個問題問題

SELECT CHARACTER6 sales_no 
     , CHARACTER4 CUST_NO 
     , OCCURRENCE 
INTO QA_RES# 
FROM OPENQUERY(ORALINK_QA, 'select * from QA.QA_RESULTS 
           where PLAN_ID = ''32196''') 
WHERE NOT EXISTS (SELECT * 
        FROM CHECK_OCCURRENCE); 

Answer 1

如果你想插入新行唯一的，你可以考慮使用except像這樣：

select 
    CHARACTER6 as sales_no 
    , CHARACTER4 as CUST_NO 
    , OCCURRENCE 
INTO [QA_RES#] 
from openquery (ORALINK_QA, ' 
    select CHARACTER6, CHARACTER4, OCCURRENCE 
    from QA.QA_RESULTS 
    where PLAN_ID = ''32196''') 
except 
select CHARACTER6, CHARACTER4, OCCURRENCE 
from CHECK_OCCURRENCE 

Answer 2

您需要定義（WHERE子句中的條件關係）的關係裏面的存在操作員查詢

SELECT t.CHARACTER6 AS sales_no 
     , t.CHARACTER4 AS CUST_NO 
     , t.OCCURRENCE 
     INTO QA_RES# 
FROM OPENQUERY(ORALINK_QA, 'select * from QA.QA_RESULTS 
          where PLAN_ID = ''32196''' 
       ) t 
WHERE NOT EXISTS ( SELECT * 
        FROM CHECK_OCCURRENCE c 
        WHERE t.SomeColumn = c.SomeColumn --<-- Condition to check 
        );