diff --git a/backend/controller/course.js b/backend/controller/course.js
index 066013b..d2de321 100644
--- a/backend/controller/course.js
+++ b/backend/controller/course.js
@@ -1,5 +1,5 @@
 const express = require("express");
-const { getCourseList, getCourseListByInstructor, getCourseDetail, getAllCourses, createCourse, editCourse, editMultipleCourse, getAllSemesters, deleteCourse } = require("../service/course");
+const { getCourseList, getCourseListByInstructor, getCourseDetail, getAllCourses, createCourse, editCourse, editMultipleCourse, getAllSemesters, deleteCourse, getCourseAccess } = require("../service/course");
 const courseController = express.Router();
 
 // Query course list by user id
@@ -78,4 +78,12 @@ courseController.delete("/delete",
   }
 );
 
+//get access list of courses by course id
+courseController.get("/permissions/:courseId",
+  async (req, res) => {
+    const { courseId } = req.params;
+    const results = await getCourseAccess(courseId);
+    res.status(results.code || 200).json(results.data);
+  });
+
 module.exports = courseController;
diff --git a/backend/query/course.js b/backend/query/course.js
index 93c6173..6fa3e6c 100644
--- a/backend/query/course.js
+++ b/backend/query/course.js
@@ -92,7 +92,12 @@ FROM KP_Semester;
 const deleteCourseQuery = `
 DELETE FROM KP_Course 
 WHERE course_id = ?;
-`;
+`
+const getCourseAccessByCouseId = `
+SELECT client_id FROM can_access_capture_files
+WHERE couse_id = ?
+`
+
 module.exports = {
   getCourseList,
   getCourseListByInstructor,
@@ -106,5 +111,6 @@ module.exports = {
   unregisterUser,
   editMultipleCourses,
   getSemestersQuery,
-  deleteCourseQuery
+  deleteCourseQuery,
+  getCourseAccessByCouseId
 };
diff --git a/backend/service/course.js b/backend/service/course.js
index 0d07253..0330e4c 100644
--- a/backend/service/course.js
+++ b/backend/service/course.js
@@ -142,6 +142,15 @@ const deleteCourse = async({courseId}) => {
   }
 }
 
+//get access list of courses by course id
+const getCourseAccess = async courseId => {
+  const accessResults = await pool.execute(courseQuery.getCourseAccessByCouseId, [courseId]);
+  const accessList = accessResults[0];
+  return {
+    data: {courseId: courseId, accessList: accessList}
+  };
+};
+
 module.exports = {
   getCourseList,
   getCourseListByInstructor,
@@ -151,5 +160,6 @@ module.exports = {
   editCourse,
   editMultipleCourse,
   getAllSemesters,
-  deleteCourse
+  deleteCourse,
+  getCourseAccess
 };
diff --git a/backend/service/data.js b/backend/service/data.js
index d056815..9b3950c 100644
--- a/backend/service/data.js
+++ b/backend/service/data.js
@@ -54,13 +54,20 @@ const exportMetricCsv = async(data) => {
 
 const getAllCsvExport = async(data) => {
   let userId = data.userId;
-  results = await pool.execute(dataQuery.getAllDataRequest,[userId]);
-  for(i=0;i<results[0].length;i++){
-    results[0][i].message = JSON.parse(results[0][i].message);
+  results = await pool.query(dataQuery.getAllDataRequest,userId);
+  if(results[0].length > 0){
+    for(i=0;i<results[0].length;i++){
+      results[0][i].message = JSON.parse(results[0][i].message);
+    }
+    return {
+      data: results[0]
+    };
+  }else{
+    return {
+      data: []
+    }
   }
-  return {
-    data: results[0]
-  };
+
 }
 
 const getDownloadLink = async(request) => {