java/renren-admin/src/main/resources/mapper/qmjz/GoodsApplyMapper.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="io.renren.modules.qmjz.mapper.GoodsApplyMapper">

    <!-- 可根据自己的需求，是否要使用 -->
    <resultMap type="io.renren.modules.qmjz.entity.GoodsApplyEntity" id="goodsApplyMap">
        <result property="id" column="id"/>
        <result property="userId" column="user_id"/>
        <result property="goodsId" column="goods_id"/>
        <result property="createTime" column="create_time"/>
    </resultMap>

    <select id="queryPage" resultType="io.renren.modules.qmjz.entity.vo.GoodsApplyVo">
        SELECT
        ga.*,
        m.NAME userName,
        m.phone,
        si.SCHOOLNAME AS collegeName,
        g.`name` goodsName,
        gc.`name` categoryName,
        m.school_name
        FROM
        `tb_goods_apply` ga
        LEFT JOIN member_info m ON m.id = ga.user_id
        LEFT JOIN school_info si on m.COLLEGE = si.GUID
        LEFT JOIN tb_goods g ON g.id = ga.goods_id
        LEFT JOIN tb_goods_category gc ON gc.id = g.category_id
        <where>
            <if test="bo.goodsId != null">
                and ga.goods_id = #{bo.goodsId}
            </if>
        </where>
        ORDER BY ga.create_time DESC
    </select>


</mapper>