mysql存储过程

复制代码 代码如下:
delimiter $

DROP FUNCTION IF EXISTS `fun_convert`$

CREATE DEFINER=`root`@`%` FUNCTION `fun_convert`(para varchar(255))

RETURNS varchar(255) CHARSET gbk

BEGIN

declare result varchar(255) default '';

declare cnt int default 0;

declare i int default 0;

declare id BIGINT default 0;

set cnt = length(para) - length(replace(para,',',''))-1;

WHILE i < cnt DO

select c.id into id from company c where c.code = SUBSTRING(para,i*3+2,2);

set result = CONCAT(result, ",",id);

set i = i+1;

end WHILE;

set result = CONCAT(result, ",");

RETURN result;

END

$

delimiter ;

update users u set u.company = fun_convert(u.COMPANY);