返回资源分类的资源数量

src/main/resources/mapper/CourseMapper.xml

@@ -17,8 +17,14 @@
     </resultMap>
 
     <sql id="Base_Column_List">
-        id,title,thumb,
-        charge,class_hour,is_show,
+        id,title,thumb,
+        charge,class_hour,is_show,
         created_at,updated_at,deleted_at
     </sql>
+
+    <select id="getCategoryCount" resultType="xyz.playedu.api.types.mapper.CourseCategoryCountMapper">
+        SELECT `resource_course_category`.`cid` as `cid`, count(*) as `total`
+        FROM `resource_course_category`
+        GROUP BY `resource_course_category`.`category_id`;
+    </select>
 </mapper>

src/main/resources/mapper/ResourceMapper.xml

@@ -21,10 +21,19 @@
     </resultMap>
 
     <sql id="Base_Column_List">
-        id,admin_id,type,
-        name,extension,size,
-        disk,file_id,path,
-        url,created_at,parent_id,
+        id,admin_id,type,
+        name,extension,size,
+        disk,file_id,path,
+        url,created_at,parent_id,
         is_hidden
     </sql>
+
+    <select id="getCategoryCount" resultType="xyz.playedu.api.types.mapper.ResourceCategoryCountMapper">
+        SELECT `resource_category`.`cid` as `cid`, count(*) as `total`
+        FROM `resources`
+                 INNER JOIN `resource_category` ON `resource_category`.`rid` = `resources`.`id`
+        WHERE `resources`.`type` = #{type}
+        GROUP BY `resource_category`.`cid`;
+    </select>
+
 </mapper>