select * from t1 left join t2 on t2.sysno =t1.ASysNo left join t3 on t3.sysno =t2.ASysNo left join t4 on t4.sysno =t3.ASysNo left join t5 on t5.sysno =t4.ASysNo left join t6 on t6.sysno =t5.ASysNo left join t7 on t7.sysno =t6.ASysNo where t1.name lik
想在两个Activity之间传递一个对象Result,在网上差了很多,都需要序列化或者时下Paracelable,等等,试了很多都不行. 后来才制单,这个Result,根本不需要集成Sereriable或者 Paracelable,直接使用方法: new Gson().toJson(book));即可: 第一个Activity: Book book=new Book(); book.setTitle("Java编程思想"); Author author=new Author(); au