fix

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

@@ -2639,7 +2639,7 @@
                 update_time=#{updateTime},
             </if>
             <if test="sevenPushDate != null ">
-                seven_push_date=#{sevenPushDate},
+                seven_push_date =#{sevenPushDate},
             </if>
         </set>
         where id = #{id}