AnsweringQuestionMapper.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.subsidy.mapper.AnsweringQuestionMapper">

    <!-- 通用查询映射结果 -->
    <resultMap id="BaseResultMap" type="com.subsidy.model.AnsweringQuestionDO">
        <id column="id" property="id" />
        <result column="create_date" property="createDate" />
        <result column="update_date" property="updateDate" />
        <result column="delete_date" property="deleteDate" />
        <result column="course_id" property="courseId" />
        <result column="ask_id" property="askId" />
        <result column="answer_id" property="answerId" />
        <result column="title" property="title" />
        <result column="answer" property="answer" />
    </resultMap>

    <!-- 通用查询结果列 -->
    <sql id="Base_Column_List">
        create_date,
        update_date,
        delete_date,
        id, course_id, ask_id, answer_id, title, answer
    </sql>

    <select id="getCourseQuestion" resultType="com.subsidy.vo.answer.GetCourseQuestionVO">
        SELECT
            t.*,
            t2.user_name as memberName,
            t3.user_name as administerName,
            t4.company_name
        FROM
            answering_question t
            LEFT JOIN member t2 ON t.ask_id = t2.id
            left join administer t3 on t.answer_id = t3.id
            left join company_dict t4 on t3.company_id = t4.id
        WHERE
            t.delete_date IS NULL
            AND t2.delete_date IS NULL
            AND t.class_id = #{classId}
            <if test="memberId != null ">
                and t.ask_id = #{memberId}
            </if>
            order by t.create_date desc
    </select>

</mapper>