sql spatial.sql

Posted 2021-05-13

-- Finds intersecting branches
-- Accepts lat and lng
CREATE PROC SP_GET_INTERSECTING_BRANCHES
  @lat FLOAT,
  @lng FLOAT
AS
BEGIN
  DECLARE @point GEOMETRY
  SET @point = GEOMETRY::Point(@lng, @lat, 4326)
  SELECT BranchId, BranchName FROM [dbo].[Branch]
  WHERE @point.STIntersects(SpatialData) = 1
END
GO


-- Finds the closest branches
-- Accepts lat, lng and the amount of matching rows to return
CREATE PROC SP_GET_CLOSEST_BRANCHES
  @lat FLOAT,
  @lng FLOAT,
  @amount INTEGER
AS
BEGIN
  DECLARE @point GEOMETRY
  SET @point = GEOMETRY::Point(@lng, @lat, 4326)
  SELECT TOP (@amount) BranchId, BranchName, @point.STDistance(SpatialData) AS Distance FROM [dbo].[Branch]
  ORDER BY @point.STDistance(SpatialData)
END
GO