czg_team/video_server
7
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

子查询 以及 扫描路径

Browse Source
This commit is contained in:
wangw
2024-12-30 21:21:49 +08:00
parent d496efb196
commit 435421be0a
7 changed files with 82 additions and 81 deletions
Download Patch File Download Diff File Expand all files Collapse all files

48
src/main/resources/mapper/course/CourseUserDao.xml
View File

@@ -2,31 +2,31 @@
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.sqx.modules.course.dao.CourseUserDao">
<select id="selectLatelyCourse" resultType="com.sqx.modules.course.entity.Course">
select c.*,(select count(*) from course_user cu where cu.course_id=u.course_id) as courseCount,
(select group_concat(avatar) from
(SELECT tu.avatar,course_id FROM course_user o
left join tb_user tu on tu.user_id=o.user_id
GROUP BY course_id,tu.avatar
limit 3
) a where a.course_id=u.course_id ) as avatar from course_user u
left join course c on u.course_id=c.course_id
where u.user_id=#{userId} and c.is_delete=0 order by update_time desc
</select>
<!-- <select id="selectLatelyCourse" resultType="com.sqx.modules.course.entity.Course">-->
<!-- select c.*,(select count(*) from course_user cu where cu.course_id=u.course_id) as courseCount,-->
<!-- (select group_concat(avatar) from-->
<!-- (SELECT tu.avatar,course_id FROM course_user o-->
<!-- left join tb_user tu on tu.user_id=o.user_id-->
<!-- GROUP BY course_id,tu.avatar-->
<!-- limit 3-->
<!-- ) a where a.course_id=u.course_id ) as avatar from course_user u-->
<!-- left join course c on u.course_id=c.course_id-->
<!-- where u.user_id=#{userId} and c.is_delete=0 order by update_time desc-->
<!-- </select>-->
<select id="selectCourseByCourseUser" resultType="com.sqx.modules.course.entity.Course">
select c.*,(select count(*) from course_user cu where cu.course_id=u.course_id) as courseCount,
(select group_concat(avatar) from
(SELECT tu.avatar,course_id FROM course_user o
left join tb_user tu on tu.user_id=o.user_id
GROUP BY course_id,tu.avatar
limit 3
) a where a.course_id=u.course_id ) as avatar
from course_user u
left join course c on u.course_id=c.course_id
where u.user_id=#{userId} and c.is_delete=0
order by u.create_time desc
</select>
<!-- <select id="selectCourseByCourseUser" resultType="com.sqx.modules.course.entity.Course">-->
<!-- select c.*,(select count(*) from course_user cu where cu.course_id=u.course_id) as courseCount,-->
<!-- (select group_concat(avatar) from-->
<!-- (SELECT tu.avatar,course_id FROM course_user o-->
<!-- left join tb_user tu on tu.user_id=o.user_id-->
<!-- GROUP BY course_id,tu.avatar-->
<!-- limit 3-->
<!-- ) a where a.course_id=u.course_id ) as avatar-->
<!-- from course_user u-->
<!-- left join course c on u.course_id=c.course_id-->
<!-- where u.user_id=#{userId} and c.is_delete=0-->
<!-- order by u.create_time desc-->
<!-- </select>-->
<select id="selectCourseUser" resultType="com.sqx.modules.course.entity.CourseUser">
select * from course_user u where u.user_id=#{userId} and u.course_id=#{id} and u.classify=1