kyj-yanglao-end-new/yudao-module-system/yudao-module-system-biz/src/main/resources/mapper/BuildStatisticsMapper.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.system.dal.mysql.biz.BuildStatisticsMapper">

    <!-- 按楼层聚合：
         1）房间级子查询先算出每个房间的总床位数与三种状态的床位数；
         2）外层再按楼层汇总，整间空房 = 房间内有床位且全部床位空闲。
         说明：楼栋、楼层、房间、床位表均无 deleted 字段，故不做删除过滤。 -->
    <select id="selectFloorBedStatistics"
            resultType="cn.iocoder.yudao.module.system.dal.mysql.biz.bo.BuildFloorBedStatisticsBO">
        SELECT st.name                                                                      AS tenantName,
               t.tenant_id                                                                 AS tenantId,
               t.build_id                                                                  AS buildId,
               t.build_name                                                                AS buildName,
               t.floor_id                                                                  AS floorId,
               t.floor_name                                                                AS floorName,
               COUNT(t.room_id)                                                            AS totalRoomCount,
               COUNT(CASE WHEN t.bed_count &gt; 0 AND t.bed_count = t.empty_bed_count THEN 1 END) AS emptyRoomCount,
               COALESCE(SUM(t.bed_count), 0)                                               AS totalBedCount,
               COALESCE(SUM(t.occupied_bed_count), 0)                                      AS occupiedBedCount,
               COALESCE(SUM(t.empty_bed_count), 0)                                         AS emptyBedCount,
               COALESCE(SUM(t.temporary_bed_count), 0)                                     AS temporaryOccupationCount
        FROM (
            SELECT bu.tenant_id                                     AS tenant_id,
                   bu.id                                            AS build_id,
                   bu.build_name                                    AS build_name,
                   f.id                                             AS floor_id,
                   f.floor_name                                     AS floor_name,
                   r.id                                             AS room_id,
                   COUNT(b.id)                                      AS bed_count,
                   COUNT(CASE WHEN b.status = 1 THEN 1 END)         AS occupied_bed_count,
                   COUNT(CASE WHEN b.status = 0 THEN 1 END)         AS empty_bed_count,
                   COUNT(CASE WHEN b.status = 2 THEN 1 END)         AS temporary_bed_count
            FROM org_build bu
                     INNER JOIN org_build_floor f ON f.build_id = bu.id
                     LEFT JOIN org_build_room r ON r.floor_id = f.id
                     LEFT JOIN org_build_bed b ON b.room_id = r.id
            WHERE bu.org_type = #{orgType}
              AND bu.tenant_id IN
            <foreach collection="tenantIds" item="tenantId" open="(" separator="," close=")">
                #{tenantId}
            </foreach>
            <if test="buildIds != null and buildIds.size() > 0">
                AND bu.id IN
                <foreach collection="buildIds" item="buildId" open="(" separator="," close=")">
                    #{buildId}
                </foreach>
            </if>
            GROUP BY bu.tenant_id, bu.id, bu.build_name, f.id, f.floor_name, r.id
        ) t
                 LEFT JOIN system_tenant st ON st.id = t.tenant_id
        GROUP BY t.tenant_id, t.build_id, t.build_name, t.floor_id, t.floor_name, st.name
        ORDER BY t.tenant_id, t.build_id, t.floor_id
    </select>

</mapper>