现有一个存储过程:
BEGIN
DECLARE s int DEFAULT 0;
DECLARE mid VARCHAR(10);
DECLARE realname VARCHAR(20);
DECLARE mobile VARCHAR(20);
DECLARE email VARCHAR(50);
DECLARE user CURSOR FOR select id, realname, mobile, email from tb_user where status = 1;
DECLARE CONTINUE HANDLER FOR NOT FOUND SET s=1;
open user;
fetch user into mid, realname, mobile, email;
WHILE s<>1 DO
UPDATE tb_b set title = REPLACE(title,mobile,'*') where uid = mid;
fetch user into mid, realname, mobile, email;
END WHILE;
close user;
END
循环中的update语句中,replace替换,会把整个标题替换成空值,我是想只把title字段中的mobile替换成*。这里的mobile是结果集的值,该怎么写呢(tb_user表中的id也是VARCHAR类型)?