TransferCompanyMapper.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.laowu.mapper.TransferCompanyMapper">


    <select id="companyProjects" resultType="com.laowu.vo.assist.CompanyProjectsVO">
        SELECT
            t.id,
            t.company_name,
            t.logo,
            count( t3.member_id ) AS memberCnt
        FROM
            transfer_company t
            LEFT JOIN transfer_project t2 ON t.id = t2.company_id
            LEFT JOIN transfer_project_members t3 ON t2.id = t3.project_id
        WHERE
            t.delete_date IS NULL
            AND t2.delete_date IS NULL
        GROUP BY
            t.id,
            t.company_name,
            t.logo
  </select>

    <select id="oneCompanyProjects" resultType="com.laowu.vo.assist.OneCompanyProjectsVO">
        SELECT
        t2.id,
        t.company_name,
        t.logo,
        t2.project_name,
        count( t3.member_id ) AS memberCnt,
        t2.start_date,
        t2.end_date
        FROM
        transfer_company t
        LEFT JOIN transfer_project t2 ON t.id = t2.company_id
        LEFT JOIN transfer_project_members t3 ON t2.id = t3.project_id
        WHERE
        t.delete_date IS NULL
        AND t2.delete_date IS NULL
        AND t3.delete_date IS NULL
        <if test="year != null and year != ''">
            AND DATE_FORMAT( t2.start_date, '%Y' ) &lt;= #{year}
            AND DATE_FORMAT( t2.end_date, '%Y' )>=#{year}
        </if>
        and t.id = #{companyId}
        GROUP BY
        t2.id,
        t.company_name,
        t.logo,
        t2.project_name,
        t2.start_date,
        t2.end_date
    </select>
</mapper>