dxtop/src/main/resources/mapper/QrCodeMapper.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.usky.dxtop.mapper.QrCodeMapper">

    <!-- 通用查询映射结果 -->
    <resultMap id="BaseResultMap" type="com.usky.dxtop.model.QrCode">
        <id column="id" property="id" />
        <result column="name" property="name" />
        <result column="top_channel_id" property="topChannelId" />
        <result property="createBy"      column="create_by"      />
        <result property="createTime"    column="create_time"    />
        <result property="updateBy"      column="update_by"      />
        <result property="updateTime"    column="update_time"    />
    </resultMap>
    <select id="list" parameterType="com.usky.dxtop.model.QrCode" resultType="com.usky.dxtop.model.QrCode">
        select qc.*,tc.name as topChannelName
        from
        qr_code as qc
        inner join top_channel as tc
        on qc.top_channel_id = tc.id
        <where>
            <if test="name != null and name != ''">
                AND qc.name like concat('%', #{name}, '%')
            </if>
            and qc.del_flag = 0
        </where>
    </select>

</mapper>