ProjectMemberDAO.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.zhongzhi.dao.ProjectMemberDAO">

    <select id="projectMembers" resultType="com.zhongzhi.model.ProjectMemberDO">
        SELECT
            t.id,
            t.school,
            t.`name`,
            t.type,
            t.telephone,
            t2.project_name,
            IFNULL( t.id_card, t3.id_card ) idCard
        FROM
            project_member t
            LEFT JOIN project t2 ON t.project_id = t2.id
            LEFT JOIN student t3 ON t2.proposer_id = t3.id
        WHERE
            t.delete_time IS NULL
            AND t.project_id = #{projectId}
            AND t.type != '指导教师'
    </select>
</mapper>