修改了bug

src/main/resources/mapper/business/cmsActivity.mapper/CmsActivityMapper.xml

@@ -269,8 +269,8 @@
     <select id="selectPeopleCountById" resultType="org.rcisoft.business.cmsActivity.entity.CmsActivity">
         select
             COUNT(mi.business_id) AS alreadyApplicationCount,
-            SUM(CASE WHEN mi.mem_sex = 0 THEN 1 ELSE 0 END) AS alreadyMaleCount,
-            SUM(CASE WHEN mi.mem_sex = 1 THEN 1 ELSE 0 END) AS alreadyFemaleCount
+            COALESCE(SUM(CASE WHEN mi.mem_sex = 0 THEN 1 ELSE 0 END), 0) AS alreadyMaleCount,
+            COALESCE(SUM(CASE WHEN mi.mem_sex = 1 THEN 1 ELSE 0 END), 0) AS alreadyFemaleCount
         from cms_application ca
         LEFT JOIN mem_info mi ON mi.user_id = ca.create_by
         where ca.activity_id = #{businessId}