abb-manage/platform-dao/src/main/resources/mapper/upms/SysDictMapper.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.platform.dao.mapper.upms.SysDictMapper">

    <select id="selectType" resultType="java.lang.String">
       SELECT distinct(type) as type FROM t_sys_dict;
    </select>

    <select id="selectTreeByDTO"
            resultType="com.platform.dao.entity.upms.SysDict">
        SELECT * from t_sys_dict
        group by type
    </select>
</mapper>