BUG修复

distributed-print-business/src/main/resources/mapper/ExamDetailCourseMapper.xml

@@ -21,7 +21,7 @@
         SELECT
             ed.id examDetailId,
             ed.school_id schoolId,
-            ed.exam_id examId,
+            b.exam_id examId,
             a.id examDetailCourseId,
             a.course_code courseCode,
             a.course_name courseName,