find the nearest location in ms-sql

Question

I send these paramaters my script : Latitude : 41.0186 Longitude : 28.964701 (it is sample). i want to find nearest location\'s name. how to do this? (query\'s where code\'s mus

Answer 1

declare @latitude float, @longitude float
select @latitude = 41.0186, @longitude = 28.964701

 SELECT [Name]   --, other columns
      ,Distance
      from
      (
      select 
      [Name]       --, other columns 
       ,( 3959 * acos( cos( radians(@latitude) ) * cos( radians( [Lattitude] ) ) * cos( radians( [Longitude] )
       - radians(@longitude) ) + sin( radians(@latitude) ) * sin( radians( [Lattitude] ) ) ) ) 
       AS Distance  FROM [dbo].[Location]
   ) as x   
    where Distance < 5   
  order by distance