MySQL的Replaceinto与Insertintoonduplicatekeyupdate真正的不同之处:看下面的例子吧： 1 Replace into ...1.1 录入原始数据mysql> use test;Database changedmysql> mysql> CREATE TABLE t1 SELECT 1 AS a, 'c3' AS b, 'c2' AS c;ALTER TABLE t1 CHANGE a a IN