fix:修改变量名避免mysql保留字

src/main/java/com/nju/edu/eval/data/entity/Score.java

@@ -39,7 +39,7 @@ public class Score {
     /**
      * 本次考试排名
      */
-    private int rank = 0;
+    private int studentRank = 0;
 
     /**
      * 第一次提交时间

src/main/java/com/nju/edu/eval/model/vo/score/PersonalScoreReportVO.java

@@ -22,7 +22,7 @@ public class PersonalScoreReportVO implements Serializable {
 
     private Double score;
 
-    private Integer rank;
+    private Integer studentRank;
 
     private Date submitTime;