mysql数据库中替换所有表中的所有字段值（存储过程）

CREATE DEFINER=`root`@`localhost` PROCEDURE `init_replace`(in orig_str varchar(255),in new_str varchar(255),in db_name varchar(100))
BEGIN
    #Routine body goes here...
DECLARE t_name VARCHAR(100);
DECLARE done int default 0;
DECLARE cur CURSOR FOR SELECT DISTINCT table_name as name FROM INFORMATION_SCHEMA.TABLES WHERE table_schema=db_name;
DECLARE CONTINUE HANDLER FOR NOT FOUND SET done = 1;
OPEN cur;
FETCH cur INTO t_name;
WHILE (done<>1) do
call do_replace(orig_str,new_str,db_name,t_name);
FETCH cur INTO t_name;
END WHILE;
END　

CREATE DEFINER=`root`@`localhost` PROCEDURE `do_replace`(in orig_str varchar(100),in new_str varchar(100),in db_name varchar(100),in t_name varchar(100))
BEGIN
    #Routine body goes here...
DECLARE cul_name VARCHAR(50);
DECLARE done int default 0;
DECLARE cur CURSOR FOR SELECT COLUMN_NAME FROM INFORMATION_SCHEMA.COLUMNS where TABLE_SCHEMA=db_name and TABLE_NAME=t_name;
DECLARE CONTINUE HANDLER FOR NOT FOUND SET done = 1;
OPEN cur;
FETCH cur INTO cul_name;
WHILE (done<>1) do
set @update_sql=CONCAT("Update `",t_name,"` SET `",cul_name,"` =REPLACE(`",cul_name,"`,'",orig_str,"','",new_str,"');");
prepare stmt from @update_sql;
execute stmt;
FETCH cur INTO cul_name;
END WHILE;
CLOSE cur;
END

call init_replace('http://www.baidu.com','https://www.baidu.com','给数据库名称');