mysql 存儲過程 實現數據同步

數據庫 表 發生變化，需要把2.0的表數據 同步到3.0庫中去；

 

-- 同步數據存儲過程執行

-- 更新留言舊表數據到新表數據中

/*DEFINER：Vector*/
drop procedure if exists p_for_feedback_message;

create procedure p_for_feedback_message()
begin
DECLARE v_done INT DEFAULT 0;

DECLARE v_id INT DEFAULT 0;
DECLARE v_feedback VARCHAR(50);
DECLARE v_user_phone VARCHAR(50);
DECLARE v_system_time VARCHAR(50);
DECLARE v_status VARCHAR(50);

DECLARE v_requDatas CURSOR FOR (SELECT f.id as id,f.feedback as feedback,f.user_phone as user_phone,f.system_time as system_time,f.`status` as status FROM feedback_message as f ORDER BY system_time DESC);
/*游標異常后捕捉並設置變量，done 為 1 跳出循環*/
DECLARE CONTINUE HANDLER FOR NOT FOUND SET v_done = 1;

START TRANSACTION;
/*打開游標*/
OPEN v_requDatas;
out_loop:
LOOP
/*游標向下走一步，將查詢出來的值付給定義的變量*/
FETCH v_requDatas into v_id,v_feedback,v_user_phone,v_system_time,v_status;
IF v_done = 1 THEN
LEAVE out_loop;
END IF;

BEGIN
DECLARE v_user_id VARCHAR(50);

SELECT user_id into v_user_id FROM user_info WHERE user_phone = v_user_phone LIMIT 0,1 ;
INSERT INTO feedback_message2 (id,user_id,feedback,system_time,`status`)VALUES(v_id,v_user_id,v_feedback,v_system_time,v_status);

if(v_user_phone is not null) then
select v_user_phone,v_user_id;
end if;

END;

SET v_done = 0;
END LOOP out_loop;
/*關閉游標*/
CLOSE v_requDatas;

/*事務提交*/
COMMIT;
END;