replace(into)/insert into 替换数据

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');
*/