问如何使用mybatis映射JSON_ARRAYAGG结果ENmybatis-conf.xml配置文件中，需要把settings标签放在properties之后，environments之前，不然会报错。由于数据库字段last_name和java属性lastName不匹配。有三种解决方式，一种是在查询的时候取别名，第二种是配置驼峰命名法，配置之后会自动将数据库中的带有下划线的字段映射为lastName。第三种是自己利用resultMap自定义结...
SELECTname,JSON_ARRAYAGG(data->>'$.hobbies')AShobbiesFROMusersGROUPBYname; 1. 二、MyBatis与MySQL JSON的整合 MyBatis是一款优秀的ORM框架,能使数据库操作更加简洁优雅。我们可以通过配置MyBatis,使其能支持JSON类型的处理。 Maven依赖 首先,确保你在pom.xml中添加了以下依赖: <dependency><groupId>org.myba...
(SELECT JSON_ARRAYAGG(o) AS orders FROM orders o WHERE o.user_id = u.id) AS orders FROM user u WHERE u.age = #{age} </select> </mapper> // 服务层(UserService.java) @Service public class UserService { @Autowired private UserMapper userMapper; public IPage<User...
privateJSONObjectaggJson; 三、测试类 packagecom.cxstar; importcom.alibaba.fastjson.JSONArray; importcom.alibaba.fastjson.JSONObject; importcom.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper; importcom.cxstar.domain.Data; importcom.cxstar.domain.SearchMsg; importcom.cxstar.mapper.DataMapper...
tct.principals, tp.person_name, tct.deleted, (SELECT JSON_ARRAYAGG(obj) FROM (SELECT trt.relevance_id,JSON_OBJECT('taskName',trt.task_name,'openStatus',trt.open_status,'taskSort',trt.task_sort) as obj FROM tb_review_task trt GROUP BY trt.relevance_id,trt.task_name,trt.open_status,...
; jb.put("curPage", "1"); JSONArray js = new JSONArray(); js.add("西北政法大学"); js.add("西安理工大学"); jb.put("source", js); data.setAggJson(jb); dataMapper.insert(data); // --- // select --- Data data1 = dataMapper.selectById(5837); JSONObject jb2 = data1.ge...
将信息存储为:1;one;1;1;one;3;id;items2,[2]例如,在Oracle中,我会使用JSON_ARRAYAGG或LISTAGG函数。 浏览94提问于2019-10-29得票数 0 2回答 Spring Data -为什么不能使用原生查询进行分页 、、 e from MyEntity e where e.enabled = true")但是,使用原生查询不可能实现相同的功能是否可以使用原生查询...
" + "JSON_," + //"JSON_AGG," + //"JSON_ARRAYAGG," + //"JSON_OBJECT_AGG," + //"JSON_OBJECTAGG," + //"JSONB_AGG," + //"JSONB_OBJECT_AGG," + "LAST," + "LISTAGG," + "MAX," + "MEDIAN," + "MIN," + "PERCENT_," + //"PERCENT_RANK," + //"PERCENTILE_CONT," ...
//"JSON_ARRAYAGG," + //"JSON_OBJECT_AGG," + //"JSON_OBJECTAGG," + //"JSONB_AGG," + //"JSONB_OBJECT_AGG," + "LAST," + "LISTAGG," + "MAX," + "MEDIAN," + "MIN," + "PERCENT_," + //"PERCENT_RANK," + //"PERCENTILE_CONT," + //"PERCENTILE_DISC," + "RANK," +...
如何使用mybatis映射JSON_ARRAYAGG结果 、、、 mybatis mapper: <resultMap id="userMap" type假设在pictures中有2个结果,如果我直接执行sql,这里只返回1个结果。 浏览55提问于2021-01-05得票数 0 1回答 MyBatis - ResultMap根据javaType 、 我们决定创建一个新的对象图,它反映了我们未来的DB模式(当前的模...