museums/yudao-module-museums/yudao-module-museums-biz/src/main/resources/mapper/specimenoutbound/SpecimenOutboundMapper.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="cn.iocoder.yudao.module.museums.dal.mysql.specimenoutbound.SpecimenOutboundMapper">

    <!--
        一般情况下，尽可能使用 Mapper 进行 CRUD 增删改查即可。
        无法满足的场景，例如说多表关联查询，才使用 XML 编写 SQL。
        代码生成器暂时只生成 Mapper XML 文件本身，更多推荐 MybatisX 快速开发插件来生成查询。
        文档可见：https://www.iocoder.cn/MyBatis/x-plugins/
     -->
    <select id="selectMonthlyOutboundStatistics" resultType="map">
        SELECT
            MONTH(outgoing_time) AS month,
            COUNT(DISTINCT TRIM(SUBSTRING_INDEX(SUBSTRING_INDEX(info_id, ',', numbers.n), ',', -1))) AS number
        FROM
            museums_specimen_outbound
            JOIN
            (SELECT 1 AS n UNION SELECT 2 UNION SELECT 3 UNION SELECT 4 UNION SELECT 5 UNION
            SELECT 6 UNION SELECT 7 UNION SELECT 8 UNION SELECT 9 UNION SELECT 10) AS numbers
        ON
            CHAR_LENGTH(info_id) - CHAR_LENGTH(REPLACE(info_id, ',', '')) >= numbers.n - 1
        WHERE
            (status = 3 OR status = 4)
          AND YEAR(outgoing_time) = #{year}
          AND deleted = 0
        GROUP BY
            MONTH(outgoing_time)
        ORDER BY
            month
    </select>

    <select id="getMonthlyReturnStatistics" resultType="map">
        SELECT
            MONTH(return_date) AS month,
            COUNT(DISTINCT TRIM(SUBSTRING_INDEX(SUBSTRING_INDEX(info_id, ',', numbers.n), ',', -1))) AS number
        FROM
            museums_specimen_outbound
            JOIN
            (SELECT 1 AS n UNION SELECT 2 UNION SELECT 3 UNION SELECT 4 UNION SELECT 5 UNION
            SELECT 6 UNION SELECT 7 UNION SELECT 8 UNION SELECT 9 UNION SELECT 10) AS numbers
        ON
            CHAR_LENGTH(info_id) - CHAR_LENGTH(REPLACE(info_id, ',', '')) >= numbers.n - 1
        WHERE
            (status = 4)
          AND YEAR(return_date) = #{year}
          AND deleted = 0
        GROUP BY
            MONTH(return_date)
        ORDER BY
            month
    </select>

</mapper>