Sql 如何选择同一组的顶级记录？

现在我使用的是MS SQL Server 2008。我想知道是否可以选择同一组的顶部记录。我的表中有3个字段。这是我的桌子

ID      GroupNo     FieldOfInterest  
0001    G1                  Football  
0002    G2                  Football  
0003    G2                  Basketball
0004    G3                  Golf
0005    G3                  Swimming  

SELECT t1.*
FROM table AS t1
INNER JOIN (
    SELECT MIN(ID) AS MinID
    FROM table
    GROUP BY GroupNo) AS t2
ON t1.id = t2.MinID

我想像那样从这个表中选择记录

ID      GroupNo             FieldOfInterest  
0001    G1                  Football  
0002    G2                  Football  
0004    G3                  Golf  

SELECT t1.*
FROM table AS t1
INNER JOIN (
    SELECT MIN(ID) AS MinID
    FROM table
    GROUP BY GroupNo) AS t2
ON t1.id = t2.MinID

我该怎么做？请帮帮我。
关于

SELECT t1.*
FROM table AS t1
INNER JOIN (
    SELECT MIN(ID) AS MinID
    FROM table
    GROUP BY GroupNo) AS t2
ON t1.id = t2.MinID

假设“top record”是指具有最相同ID的记录，因为您尚未提供订单

SELECT t1.*
FROM table AS t1
INNER JOIN (
    SELECT MIN(ID) AS MinID
    FROM table
    GROUP BY GroupNo) AS t2
ON t1.id = t2.MinID

SELECT    ID,
          GroupNo,
          FieldOfInterest
FROM      YOUR_TABLE a,    
          (SELECT    MIN(ID) AS ID
           FROM      YOUR_TABLE 
           GROUP BY  GroupNo) b
WHERE    a.ID = b.ID;

在这里，我猜您所说的

top record

是指具有最小ID值的

记录

SQL Server ROW\u NUMBER（）函数可以为您解决这个问题：

SELECT t1.*
FROM table AS t1
INNER JOIN (
    SELECT MIN(ID) AS MinID
    FROM table
    GROUP BY GroupNo) AS t2
ON t1.id = t2.MinID

create table interests (
    ID  int,
    GroupNo varchar(2),
    FieldOfInterest varchar(20)
)

insert into interests
values (1, 'G1', 'Football'),
    (2, 'G2', 'Football'),
    (3, 'G2', 'Basketball'),
    (4, 'G3', 'Golf'),
    (5, 'G3', 'Swimming');

with cte as (
    select ROW_NUMBER() OVER (PARTITION BY GroupNo ORDER BY ID) as row, *
    from interests
)
select c.ID, c.GroupNo, c.FieldOfInterest
from cte c
where row = 1