mysql如何表示排名4~6名

mysql按照并列且占位的规则来排名，例如96分应该是第四名，95分是第6名。

mysql排名并列即相同的值，相同的值保留重复名次，遇到下一个不同的值，跳跃到总共的排名。

select sum(value_name)as sum_name,max(group_name) from (select value1 as value_name ,value1_group as group_name from table1 union all select value2 as value_name,value2_group as group_name from table2) table

group by group_name

order by sum_name desc