首页查询优化

src/main/resources/mapper/course/CourseDao.xml

@@ -38,11 +38,11 @@
         c.wx_show as wxShow,
         c.dy_show as dyShow,
         c.sort,
-        0 as goodNum,
+        round(10000*rand(),0) as goodNum,
         (select count(*) from course_details d where d.course_id=c.course_id ) as courseDetailsCount,
         null AS courseDetailsName,
         null AS courseDetailsId,
-        0 as weekGoodNum,
+        round(10000*rand(),0) as weekGoodNum,
         0 as isRecommend
         FROM
         course AS c
@@ -93,10 +93,8 @@
         <if test="dyCourse!=null">
             and c.dy_status=4
         </if>
-        order by c.sort asc,c.create_time desc
-        <!--
         <if test="sort==null">
-            order by c.sort asc
+            order by c.sort asc,c.create_time desc
         </if>
         <if test="sort!=null and sort==1">
             order by goodNum desc
@@ -104,7 +102,6 @@
         <if test="sort!=null and sort==2">
             order by weekGoodNum desc
         </if>
-        -->
     </select>
 
     <select id="selectCourseAdmin" resultType="Map">