SELECT * FROM Student WHERE 1 1 ORDER BY -ID DESC ;
SELECT * FROM Student WHERE 1 1 ORDER BY (ID 1); mysql将字符串字段转为数字排序或比大小
2017年09月17日 01:36:31 阅读数:6566 版权声明:本文为博主原创文章,未经博主允许不得…
转载自 Class.forName()和ClassLoader.getSystemClassLoader().loadClass()区别 class A
{static {System.out.println("Class A is Loading now");}public A(){System.out.println("A new Class A instance is cr…
在做mybatis案例的时候发现了一个问题,报错如下:
org.apache.ibatis.exceptions.PersistenceException:### Error querying database. Cause: java.lang.IllegalArgumentException: Mapped Statements collection does not contain value for org.dao.…