所有表都不能執行INSERT或UPDATE

Question

我使用了一個存儲過程，它在第一次調用該過程後使用遊標循環並處理Mariadb 10.1數據庫上的出勤數據表，該數據庫中的所有表都丟失了執行INSERT INTO或UPDATE語句，除非目標表首先截斷，任何一個可以告訴我什麼地方出了錯，以及如何解決它 導致問題的過程：

DELIMITER $$ 
CREATE DEFINER=`root`@`localhost` PROCEDURE `settle_attendance`() 
    MODIFIES SQL DATA 
BEGIN 
DECLARE trans_done BOOLEAN DEFAULT FALSE; 
DECLARE punchid BIGINT(20); 
DECLARE timein DATETIME; 
DECLARE utctimein DATETIME; 
DECLARE timeout DATETIME; 
DECLARE utctimeout DATETIME; 
DECLARE inday DATE; 
DECLARE outday DATE; 
DECLARE todaysdate DATE; 

DECLARE attendcur CURSOR FOR 
    SELECT id, punch_in_utc_time, punch_in_user_time, 
       punch_out_utc_time, punch_out_user_time 
     FROM ohrm_attendance_record 
     ORDER BY id ASC; 
DECLARE CONTINUE HANDLER FOR NOT FOUND SET trans_done = TRUE; 

OPEN attendcur; 
edit_loop: LOOP 
SET todaysdate = CURRENT_DATE(); 
FETCH attendcur INTO punchid, utctimein, timein, utctimeout, timeout; 

IF trans_done THEN 
     CLOSE attendcur; 
     LEAVE edit_loop; 
END IF; 

SET inday = DATE(timein); 
SET outday = DATE(timeout); 
SET todaysdate = CURRENT_DATE(); 


IF (inday < todaysdate) OR (outday < todaysdate) THEN 
    CASE 
     WHEN (timein IS NULL OR timein = '') 
      OR (utctimein IS NULL OR utctimein = '') THEN 
      UPDATE ohrm_attendance_record 
       SET punch_in_utc_time = utctimeout, 
        punch_in_user_time = timeout, 
        state = 'PUNCHED OUT' 
       WHERE punchid = id; 
     ELSE BEGIN END; 
    END CASE; 

    CASE 
     WHEN (timeout IS NULL OR timeout = '') 
      OR (utctimeout IS NULL OR utctimeout = '') THEN 
      UPDATE ohrm_attendance_record 
       SET punch_out_utc_time = utctimein, 
        punch_out_user_time = timein, 
        state = 'PUNCHED OUT' 
       WHERE punchid = id; 
     ELSE BEGIN END; 
    END CASE; 
END IF; 

END LOOP edit_loop; 
END $$ 
DELIMITER ; 

Answer 1

我選擇逃避你問的問題。相反，讓我們試着通過擺脫討厭的CURSOR來快速執行10次查詢。整個存儲過程可以在2 UPDATEs完成，沒有循環：

UPDATE ohrm_attendance_record 
    SET punch_in_utc_time = utctimeout, 
     punch_in_user_time = timeout, 
     state = 'PUNCHED OUT' 
    WHERE (timein < CURDATE() OR timeout < CURDATE()) 
     AND ((timein IS NULL  OR timein = '') 
      OR (utctimein IS NULL OR utctimein = '') 
      ); 

UPDATE ohrm_attendance_record 
    SET punch_out_utc_time = utctimein, 
     punch_out_user_time = timein, 
     state = 'PUNCHED OUT' 
    WHERE (timein < CURDATE() OR timeout < CURDATE()) 
     AND ((timeout IS NULL OR timeout = '') 
      OR (utctimeout IS NULL OR utctimeout = '') 
      ); 

我，不過，你可疑檢查對timein和timeout的。

如果您在NULL或''中選擇了缺失的時間，那麼查詢會更容易閱讀。

如果僅存儲TIMESTAMP中的UTC值，則可以讓用戶的時區負責轉換爲當地時間 - 這將消除很多列並簡化UPDATEs。

我會在這個問題做一個刺......難道SHOW CREATE PROCEDURE settle_attendance;，您可以發現的CHARACTER SET或COLLATION是什麼，你認爲它應該是不一致的。