SQL查询来获取顶部1值的每个元素列表中的

Question

我需要帮助以书面查询返回了我所有列

select id, city, road1, road2, lat, long 
from tbltest 
group by id, city, lat, long. 

最终的结果应该是这样的

谢谢， Pawan

Answer 1

尽管它很奇怪，该表具有重复的id列h ERE是，将显示结果的查询，你需要：

select id, city, road1, road2, lat, long 
from 
(
    select *, row_number() over(partition by id, city, lat, long order by road1, road2) RowNumber 
    from tbltest 
) tt 
where RowNumber = 1 

Answer 2

Using Common Table Expressions

;with tbl as 
(
    select *, row_number() over(partition by id, city order by road1, road2) RowNumber 
    from tbltest 
) 

select * from tbl 
where RowNumber = 1