MySQL查詢返回錯誤消息

Question

我有以下查詢哪些推入id到臨時表中，並通過加入臨時表從另一個表中刪除記錄。 我正在使用限制來優化日誌文件沖洗。

SET @StartDate='2012-12-26'; 
SET @EndDate='2014-01-11'; 

INSERT INTO temp_A 
SELECT id FROM A 
WHERE created > @StartDate AND created < @EndDate 
ORDER BY created; 

SET @recordNotFound =0; 

WHILE(@recordNotFound = 0) 
BEGIN 
DELETE 
FROM B 
WHERE EXISTS 
     (SELECT t2.id 
     FROM temp_A AS t2 
     WHERE t2.id = B.txn_id 
) 
ORDER BY txn_id DESC 
LIMIT 1000; 

IF (ROW_COUNT() <> 1000) THEN 
SET @recordNotFound=1; 
END IF; 
END 
END WHILE; 

我在這裏得到語法錯誤。 有人可以幫忙，這裏有什麼問題嗎？

Answer 1

我們需要一個實際的錯誤信息來幫助你，儘管從你發佈的內容中我們可以看到一件事 - 肯定會丟失';'在結束之前結束後WHILE;

Answer 2

請看manual entry for while。

SET @StartDate='2012-12-26'; 
SET @EndDate='2014-01-11'; 

INSERT INTO temp_A 
SELECT id FROM A 
WHERE created > @StartDate AND created < @EndDate 
ORDER BY created; 

SET @recordNotFound =0; 

WHILE (@recordNotFound = 0) DO /*you're missing a DO here*/ 
#BEGIN /*you don't need this*/ 
DELETE 
FROM B 
WHERE EXISTS 
     (SELECT t2.id 
     FROM temp_A AS t2 
     WHERE t2.id = B.txn_id 
) 
ORDER BY txn_id DESC 
LIMIT 1000; 

IF (ROW_COUNT() <> 1000) THEN 
SET @recordNotFound=1; 
END IF; 
#END /*this line you don't need either*/ 
END WHILE;