fix:bug 查询没加考试id

teachcloud-report-business/src/main/resources/mapper/CourseReportMapper.xml

@@ -30,7 +30,7 @@
                 INNER JOIN t_a_exam_course pap ON col.exam_id = pap.exam_id
                 AND col.course_code = pap.course_code
                 AND col.school_id = pap.school_id
-            join t_b_exam_course tbec on
+            join t_b_exam_course tbec on tbec.exam_id = col.exam_id and
 		        tbec.course_code = col.course_code
         WHERE
             col.exam_id = #{examId}