sql优化

mec-biz/src/main/resources/config/mybatis/CooperationOrganMapper.xml

@@ -246,7 +246,7 @@
         left join cooperation_organ co ON co.id_ = mg.cooperation_organ_id_
         left join sys_user su ON su.id_ = co.education_user_id_
         where mg.id_ IN
-        <foreach collection="musicGroupIds" open="(" close=")" item="musicGroupId">
+        <foreach collection="musicGroupIds" open="(" close=")" item="musicGroupId" separator=",">
             #{musicGroupId}
         </foreach>
         group by mg.id_