SQL查詢來獲取頂部1值的每個元素列表中的

Question

我需要幫助以書面查詢返回了我所有列

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

最終的結果應該是這樣的

謝謝， Pawan

Answer 1

儘管它很奇怪，該表具有重複的id列h ERE是，將顯示結果的查詢，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