zc_saas_question/zhongzheng-system/src/main/resources/mapper/modules/collect/CollectBankMapper.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.zhongzheng.modules.collect.mapper.CollectBankMapper">

    <resultMap type="com.zhongzheng.modules.collect.domain.CollectBank" id="CollectBankResult">
        <result property="collectBankId" column="collect_bank_id"/>
        <result property="bankId" column="bank_id"/>
        <result property="userId" column="user_id"/>
        <result property="createTime" column="create_time"/>
        <result property="bankName" column="bank_name"/>
        <result property="coverUrl" column="cover_url"/>
    </resultMap>

    <select id="selectList" parameterType="com.zhongzheng.modules.collect.domain.CollectBank"  resultMap="CollectBankResult">
        SELECT
        cb.*,
        qb.bank_name,
        qb.cover_url
        FROM
        collect_bank cb
        LEFT JOIN question_bank qb ON cb.bank_id = qb.bank_id
        WHERE
        1 = 1
        <if test="userId != null and userId != ''">
            AND user_id = #{userId}
        </if>

    </select>
</mapper>