版权声明:本文为博主原创文章,未经博主允许不得转载。 https://blog.csdn.net/helloworld_1996/article/details/82563634
<?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="com.hao.mapper.IStudentMapper">
<select id="findStudentList" resultType="map">
select s.id,s.name,wm_concat(c.name) cnames,count(c.name) ccount from t_stu0909 s left join t_sc0909 sc on s.id = sc.sid
left join t_course0909 c on sc.cid = c.id group by s.id,s.name
</select>
<select id="findListByPage" parameterType="map" resultType="map">
</select>
</mapper>
“忍不过的事 咬着牙微笑着先忍过去 之后再想办法 你要是真当回事了 别人就把你当笑话 你要是提起精神来不当回事 没有人可以奈何得了你”
《如懿传》