mysql數據庫中替換所有表中的所有字段值（存儲過程）

 

       指定值在數據庫中所有表所有字段值的替換(存儲過程)：

　　1.寫一個存儲過程，查出指定數據庫中所有的表名：　

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

　　2.然後1中調用2中的方法，再查詢表中所有的字段，並且指定更新值：

　

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

　　3.調用1的方法：

　　啓動存儲過程：前邊是要替換的只，後邊是替換後的指

call init_replace('http://www.baidu.com','https://www.baidu.com','給數據庫名稱');