充值报错问题

src/main/resources/mapper/TbActivateMapper.xml

@@ -116,6 +116,12 @@
   </update>
 
   <select id="selectByAmount" resultMap="BaseResultMap">
-    select * from tb_activate where shop_id=#{shopId} and is_del=0 and min_num &lt;= #{amount} and max_num &gt;= #{amount}
+    select *
+    from tb_activate
+    where shop_id = #{shopId}
+      and is_del = 0
+      and min_num &lt;= #{amount}
+      and max_num &gt;= #{amount}
+    ORDER BY max_num desc limit 1
     </select>
 </mapper>