监控列表不显示没有班级的考试

sexam/src/main/resources/mapper/exam/ESubjectInvigilateMapper.xml

@@ -8,7 +8,7 @@
     <!--监考设置列表-->
     <select id="listSubject" resultType="java.util.Map">
         select s.esid,s.subjectid,s.sdate,s.begintime,s.endtime,s.esstate,s.pstate,s.subjectname
-        ,ifnull(ep.pnum,0)pnum,ifnull(ep.pscore,0)pscore,ep.correcttype
+        ,ifnull(ep.pnum,0) as pnum,ifnull(ep.pscore,0) as pscore,ep.correcttype
         from e_subject s left join e_paper ep on s.esid = ep.esid
         where s.examid=#{examid} group by s.esid
     </select>
@@ -21,16 +21,16 @@
     <!--教师监考-监控列表-->
     <select id="listJkSubject" resultType="java.util.Map">
         select es.*,count(eps.epsid)examnum
-        ,count(case when eps.sstate in(0,3) then eps.epsid else null end) wjcnum
-        ,count(case when eps.sstate in(1,2) then eps.epsid else null end)jcnum
-        ,truncate(count(case when eps.sstate in(1,2) then eps.epsid else null end)*100/count(eps.epsid),2) jcrate
-        ,count(case when eps.sstate=2 then eps.epsid else null end)tjnum
-        ,count(case when eps.sstate=3 then eps.epsid else null end)qknum
+        ,count(if(eps.sstate in(0,3), eps.epsid, null)) wjcnum
+        ,count(if(eps.sstate in(1,2), eps.epsid, null))jcnum
+        ,truncate(count(if(eps.sstate in(1,2), eps.epsid, null))*100/count(eps.epsid),2) jcrate
+        ,count(if(eps.sstate=2, eps.epsid, null))tjnum
+        ,count(if(eps.sstate=3, eps.epsid, null))qknum
         from(select es.esid,es.sdate,es.begintime,es.endtime,es.esstate,es.subjectname,es.pstate
         ,eb.examname,eb.gradeid,eb.examtype,eb.examstate,eb.hashb,eb.schoolid,max(ei.majored)majored
-        ,(case when max(ei.majored)=0 then group_concat(distinct ei.classid) else group_concat(distinct ec.classid) end)classids
+        ,(if(max(ei.majored)=0, group_concat(distinct ei.classid), group_concat(distinct ec.classid)))classids
         ,concat('[',group_concat(distinct json_object('classid',ec.classid,'classname',ec.classname
-            ,'schoolid',ec.schoolid,'schoolname',s.schoolname)),']')classnames
+        ,'schoolid',ec.schoolid,'schoolname',s.schoolname)),']')classnames
         from e_subject_invigilate ei left join e_subject es on ei.esid=es.esid
         left join e_base eb on eb.examid = es.examid
         left join e_class ec on eb.examid = ec.examid
@@ -48,7 +48,7 @@
         <if test="esstate==2">
             and es.pstate=2
         </if>
-        group by es.esid
+        group by es.esid having classids is not null
         )es left join e_paper_student eps on es.esid = eps.esid and find_in_set(eps.classid,es.classids)
         group by es.esid
         <if test="esstate==1">