Question

说我有一个sql，目前返回所有在每年玩过的足球运动员。像这样：

  name       year      goals
john        2010        1 
john        2006        2
john        2006        8
fred        2006        1

但是我希望结果按照他们玩的年份进行分组，但如果他们来自不同年份，请不要压缩玩家名称，如下所示：

 name     year      goals
john      2010       1
john      2006       10        <--- This is compressed, but there are still 2 johns
fred      2006       1              since they are from different years

说我到目前为止已经这样做了。

(select name, year, goals
from table) as T

如果我这样做

select *
from
  (select name, year, goals
  from table) as T 
group by year;

弗雷德将会消失，但如果我按“名字分组”，只剩下一个约翰。有帮助吗？

Answer 1

select name, year, sum(goals) as totalgoals
from table
group by name, year

如何在SQL中将两个字段组合在一起？

1 个答案: