左外連接+ where子句意外結果

Question

我對查詢的結果感到驚訝，希望有人能解釋它。

查詢是那種大的，所以我把它蒸餾的關鍵部分：

SELECT * 
FROM A 
INNER JOIN B ON A.id = B.id 
LEFT JOIN C ON C.ID = B.ID 
WHERE A.Dt = '2016-06-23' 
    AND (B.StatusCode=' ' OR C.Code <> 9) 

我得到比16年6月23日等日期，即使我有它在我的where子句。我認爲它與左連接表中的where子句中的列和一個表達式中的內連接表結合起來，但以前從未遇到過這種情況。

UPDATE：添加實際查詢

SELECT * 
FROM CERT2.cube_mbbal_Daily_Balances BAL 
INNER JOIN CERT.Dim_Account A ON A.AccountKey = BAL.AccountKey 
LEFT JOIN CERT2.Dim_LoanAccount LA ON A.AccountKey = LA.AccountKey 
WHERE 
    (A.AccountClassification IN ('Checking', 'Savings') 
    AND AccountStatus IN ('1', '3', '5', '6', '7')) 
    OR 
    (A.AccountClassification IN ('Time') 
    AND AccountStatus IN ('1', '5', '7')) 
    OR 
    (A.AccountClassification IN ('Loan') 
    AND (AccountStatus <> 'C' OR RiskCode <> 9)) 
    AND BAL.DateOfFinancialMeasure = 20160623 

Answer 1

AND是OR之前評估。這就像你正在評估2 + 5 + 7 * 5並想知道爲什麼你會得到42而不是70。

嘗試：

select * 
from CERT2.cube_mbbal_Daily_Balances BAL 
inner join CERT.Dim_Account A 
    on A.AccountKey = BAL.AccountKey 
left join CERT2.Dim_LoanAccount LA 
    on A.AccountKey = LA.AccountKey 
where (
      (A.AccountClassification in ('Checking', 'Savings') and AccountStatus in ('1', '3', '5', '6', '7')) 
     or (A.AccountClassification in ('Time') and AccountStatus in ('1', '5', '7')) 
     or (A.AccountClassification in ('Loan') and (AccountStatus <> 'C' or RiskCode <> 9)) 
    ) 
    and BAL.DateOfFinancialMeasure = 20160623