Mysql的選擇alias列

Question

我需要篩選具有如下一些條件列查詢：

SELECT 
    `c`.`fullname` AS `fullname`, 
    IFNULL(`c`.`new_ic`,`c`.`old_ic`) AS `Ic`, 
    `bla`.`loan_no` AS `Loan_No`, 
    `bla`.`total_loan_amt` AS `Total_Loan_Amt`, 
    `bla`.`monthly_installment` AS `Month_Inst_Amt`, 
    `bla`.`disb_date` AS `disb_date` FROM (`customers` `c` 
JOIN `basic_loan_application` `bla` 
    ON ((`bla`.`customer_uid` = `c`.`customer_uid`))) 
WHERE Ic LIKE '%800%' ORDER BY `bla`.`Basic_Loan_Application_Id` DESC LIMIT 0, 10 

但我不能使用IC領域，併爲下面的描述下返回錯誤：

Unknown column 'Ic' in 'where clause' 

我如果可能，要儘量避免嵌套選擇。

有沒有解決這個問題的另一種方法？

Answer 1

只是重複定義：

WHERE IFNULL(`c`.`new_ic`,`c`.`old_ic`) LIKE '%800%' 
ORDER BY `bla`.`Basic_Loan_Application_Id` DESC 
LIMIT 0, 10 

或者，如果你喜歡，可以使用MySQL的擴展，它允許您使用having條款做過濾（在這種情況下）：

HAVING Ic LIKE '%800%' 
ORDER BY `bla`.`Basic_Loan_Application_Id` DESC 
LIMIT 0, 10