select a.*,lag(a.id,1) over (order by id desc) lag from 表 a
lag(要選擇的字段,前面一條) over(根據字段排序)lag
select a.*,lag(a.id,1) over (order by id desc) lag from 表 a
lag(要選擇的字段,前面一條) over(根據字段排序)lag
不摸魚了,直接上代碼! 也參考了網上很多資料,請理解! <build> <plugins> <plugin> <artifactId>maven-compiler-plugin</arti
下面請看一段代碼,父類(基類)SuperClass,子類(派生類)SubClass class SuperClass { private int n; SuperClass(int n) {