replace(into)/insert into 替换数据
将id=5以及emp_no=10001的行数据替换成id=5以及emp_no=10005
https://www.nowcoder.com/practice/2bec4d94f525458ca3d0ebf3bc8cd240
update titles_test
set emp_no=replace(emp_no,10001,10005)
where id=5
/* replace(columnname,被替代的值,新值)
INSERT INTO titles_test
VALUES(5, 10001 ,'Senior Engineer', '1986-06-26', '9999-01-01')
ON DUPLICATE KEY UPDATE emp_no = 10005;
REPLACE INTO titles_test
VALUES(5, 10005 ,'Senior Engineer', '1986-06-26', '9999-01-01');
*/