sql - 选择组中的最小值

Question

我有一张 table

ID,  name, pay1, pay2
 1     a,    3,    2
 2     b,   12,    4
 3     b,    4,    8
 4     c,    8,    7
 5     c,    5,    2
 6     a,    7,    1

我想选择每个姓名中 pay1 + pay2 最小的行。所以，我想得到

 ID,  name, pay1, pay2
 1     a,    3,    2
 3     b,    4,    8
 5     c,    5,    2

知道如何在 SQL Server 中执行此操作吗？谢谢

Answer 1

使用排名函数:

with minpay as
(
  select *
    , payrank = row_number() over (partition by name order by pay1 + pay2, ID)
  from pay
)
select ID
  , name
  , pay1
  , pay2
from minpay
where payrank = 1
order by name

SQL Fiddle with demo .