修改TrialLibrary唯一索引字段顺序

stmms-biz/src/main/java/cn/com/qmth/stmms/biz/mark/model/TrialLibrary.java

@@ -17,7 +17,8 @@ import javax.persistence.UniqueConstraint;
  *
  */
 @Entity
-@Table(name = "m_trial_library",uniqueConstraints={@UniqueConstraint(columnNames={"group_number","student_id"})})
+@Table(name = "m_trial_library", uniqueConstraints = {
+        @UniqueConstraint(columnNames = { "student_id", "group_number" }) })
 public class TrialLibrary implements Serializable {
 
     private static final long serialVersionUID = 6791719880545458247L;