DELIMITER $$DROP PROCEDURE IF EXISTS `transferEmailTempData`$$CREATE PROCEDURE transferEmailTempData(IN jobId VARCHAR(24))BEGIN  DECLARE idval VARCHAR(24) DEFAULT '';  DECLARE taskIdval VARCHAR(24) DEFAULT '';  DECLARE groupIdval VARCHAR(24) DEFAULT '';  DECLARE emailval VARCHAR(50) DEFAULT '';    /*標識正式表是否存在一條相同數據，即：groupId、email相同*/  DECLARE infoId VARCHAR(24) DEFAULT '';    /*標識事務錯誤*/  DECLARE err INT DEFAULT 0;    /*達到一定數量就進行提交，計數器*/  DECLARE counts INT DEFAULT 0;    /*標識是否回滾過*/  DECLARE isrollback INT DEFAULT 0;    /*游標遍歷時，作為判斷是否遍歷完全部記錄的標記*/  DECLARE done INTEGER DEFAULT 0;    /*獲取臨時表該任務的數據*/  DECLARE cur CURSOR FOR SELECT id,taskId,groupId,email FROM `t_email_data_temp` WHERE taskId=jobId;    /*根據群組id、email查詢是否存在相同記錄*/  DECLARE cur2 CURSOR FOR SELECT id FROM `t_email_info` e WHERE e.`group_id` = groupIdval AND e.`email_address` = emailval;     /* 出現錯誤，設置為1，只要發生異常就回滾*/  DECLARE CONTINUE HANDLER FOR SQLEXCEPTION SET err=1;    /*聲明當游標遍歷完全部記錄后將標志變量置成某個值*/  DECLARE CONTINUE HANDLER FOR NOT FOUND  SET done=1;    /*開啟事務*/  START TRANSACTION;    /*打開游標*/  OPEN cur;    /*使用LOOP循環遍歷*/  out_loop:LOOP      /*將每一條結果對應的字段值賦值給變量*/    FETCH cur INTO idval,taskIdval,groupIdval,emailval;    IF done = 1 THEN      LEAVE out_loop;    END IF;        /*打開第二個游標*/    OPEN cur2;      SET done = 0;      FETCH cur2 INTO infoId;            /*如果正式表不存在相同groupId and email記錄，添加到正式表*/      IF done = 1 THEN              /*插入正式表*/        INSERT INTO `t_email_info` VALUES(idval,emailval,groupIdval,0,'',NOW(),'admin',NOW(),'admin');                /*刪除臨時數據*/        DELETE FROM `t_email_data_temp` WHERE id = idval;                /*計數器，每1000條才提交*/        SET counts = counts + 1;                /*發生異常，回滾*/        IF err=1 THEN          SET isrollback=1;          ROLLBACK;        ELSE          IF counts = 1000 THEN            COMMIT;            /*達到1000條提交后，重置計數器*/            SET counts=0;          END IF;        END IF;      ELSE        /*已經存在相同記錄，則刪除該記錄*/        IF done=0 THEN          DELETE FROM `t_email_data_temp` WHERE id = idval;        END IF;      END IF;      FETCH cur2 INTO infoId;    CLOSE cur2;        /*控制外部的循環，該步驟不能缺少，否則只循環一次就結束了*/    SET done=0;      END LOOP out_loop;  CLOSE cur;    /*如果沒有發生過回滾事件，則更新task狀態*/  /*如果回滾過，不更新task狀態，下次執行任務的時候，會再次將剩余沒有提交的數據進行添加到正式表*/  IF isrollback=0 THEN    UPDATE `t_email_task` t SET t.`if_finish` = 1 WHERE t.`id`=jobId;  END IF;    END$$DELIMITER ;