mybatis 关联映射

一对一

创建数据表

CREATE TABLE `tb_card` (
`id`  int NOT NULL AUTO_INCREMENT ,
`code`  varchar(18) NULL ,
PRIMARY KEY (`id`)
);
insert into tb_card(code) values('123456');
CREATE TABLE tb_person(id int not null PRIMARY KEY auto_increment,name VARCHAR(18),sex VARCHAR(18),age int,card_id int UNIQUE);
INSERT INTO tb_person(name,sex,age,card_id) VALUES('jack','男',23,1);

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