fix:修改变量名避免mysql保留字

src/views/exam/PersonalResult.vue

@@ -231,7 +231,7 @@ export default Vue.extend({
       })
 
       getPersonalReport(examId).then(({ data }) => {
-        let rank = data.result.rank
+        let rank = data.result.studentRank
         let score = data.result.score
 
         this.gradeOption = {