ClassMemberMappingMapper.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.ClassMemberMappingMapper">

    <!-- 通用查询映射结果 -->
    <resultMap id="BaseResultMap" type="com.subsidy.model.ClassMemberMappingDO">
        <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="member_id" property="memberId" />
        <result column="class_id" property="classId" />
    </resultMap>

    <!-- 通用查询结果列 -->
    <sql id="Base_Column_List">
        create_date,
        update_date,
        delete_date,
        id, member_id, class_id
    </sql>

    <select id="getMemberClass" parameterType="long" resultType="com.subsidy.model.ClassDictDO">
        SELECT
        t2.*
        FROM
        class_member_mapping t
        LEFT JOIN class_dict t2 ON t.class_id = t2.id
        WHERE
        t.delete_date IS NULL
        AND t2.delete_date IS NULL
        and t2.start_date &lt;= now()
        and t2.end_date >= now()
        and t.member_id = #{memberId}
    </select>

</mapper>