fix 错题

zhongzheng-system/src/main/resources/mapper/modules/grade/ClassGradeUserMapper.xml

@@ -270,7 +270,7 @@
         (SELECT
         COUNT(up.id) FROM user_period up LEFT JOIN user_period_status ups on up.id = ups.period_id where ups.`status`
         =0 and ups.period_status = 1 and up.goods_id=#{goodsId} and up.user_id = #{userId} and up.type = 2) as exam_cheat,
-        (SELECT up.key_value FROM user_profile up where up.goods_id = #{goodsId} and up.user_id =#{userId} and up.current_status = 1 and up.type_status =1) as key_value
+        (SELECT up.key_value FROM user_profile up where up.goods_id = #{goodsId} and up.user_id =#{userId} and up.current_status = 1 and up.type_status =1 LIMIT 1) as key_value
         FROM
         class_grade_user cgu
         LEFT JOIN class_grade cg ON cgu.grade_id = cg.grade_id