在SQL Server中组合ORDER BY和UNION

order by

top

select first.Id, first.Name 
from (
    select top 1 * 
    from Locations 
    order by Id) first
union all
select last.Id, last.Name 
from (
    select top 1 * 
    from Locations 
    order by Id desc) last

select * from (
SELECT TOP 1 Id,Name FROM Locations ORDER BY Id) X
UNION ALL
SELECT TOP 1 Id,Name FROM Locations ORDER BY Id DESC

; WITH NumberedRows as (
    SELECT Id,Name,
       ROW_NUMBER() OVER (ORDER BY Id) as rnAsc,
       ROW_NUMBER() OVER (ORDER BY Id desc) as rnDesc
    FROM
        Locations
)
select * from NumberedRows where rnAsc = 1 or rnDesc = 1

SELECT TOP 1 Id as sameColumn,Name FROM Locations 
UNION ALL
SELECT TOP 1 Id as sameColumn,Name FROM Locations ORDER BY sameColumn DESC