目录前言一、单表继承(Single Table Inheritance)1-1、原理1-2、使用方法1-3、注意事项二、连接表继承(Joined Table Inheritance)2-1、原理2-2、使用方法2-3、注意事项三、每个具体类一张表(Table Per Class)3
Hi i\'ve got a problem evaluating json. My goal is to insert json member value to a function variable, take a look at this