修改课程count语句

exam-work-api/src/main/java/cn/com/qmth/examcloud/service/examwork/service/ExamCourseService.java

@@ -2,6 +2,7 @@ package cn.com.qmth.examcloud.service.examwork.service;
 
 import cn.com.qmth.examcloud.service.examwork.criteria.ExamCourseCriteria;
 import cn.com.qmth.examcloud.service.examwork.dto.ExamCourseDTO;
+import cn.com.qmth.examcloud.service.examwork.entity.Exam;
 import org.apache.commons.lang3.StringUtils;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.data.domain.Page;
@@ -50,9 +51,7 @@ public class ExamCourseService {
 
     private long countAll(ExamCourseCriteria examCourseCriteria){
         StringBuffer sql = new StringBuffer();
-        sql.append(buildCountSql());
-        sql.append(buildCriteriaSql(examCourseCriteria));
-        sql.append(buildGroupSql());
+        sql.append(buildCountSql(examCourseCriteria));
         return this.jdbcTemplate.queryForObject(sql.toString(),Long.class);
     }
 
@@ -100,9 +99,13 @@ public class ExamCourseService {
         return baseSql.toString();
     }
 
-    private String buildCountSql(){
+    private String buildCountSql(ExamCourseCriteria examCourseCriteria){
         StringBuilder countSql = new StringBuilder();
-        countSql.append("select count(*) from ecs_exam_student ts,ecs_exam te where ts.exam_id = te.id");
+        countSql.append("select count(*) from (");
+        countSql.append(buildBaseSql());
+        countSql.append(buildCriteriaSql(examCourseCriteria));
+        countSql.append(buildGroupSql());
+        countSql.append(")");
         return countSql.toString();
     }