Shulou(Shulou.com)05/31 Report--

This article shows you how to calculate the distance difference according to the longitude and latitude of the map in SQLSERVER. The content is concise and easy to understand, which will definitely brighten your eyes. I hope you can get something through the detailed introduction of this article.

The code is as follows:

Go-create a function for calculating longitude and latitude distance

CREATEFUNCTION [dbo]. [fnGetDistance]-- LatBegin start longitude-- LngBegin start dimension (@ LatBegin REAL, @ LngBegin REAL, @ LatEnd REAL, @ LngEnd REAL) RETURNSFLOAT AS BEGIN-- distance (km) DECLARE @ Distance REAL DECLARE @ EARTH_RADIUS = 6378.137 DECLARE @ RadLatBegin REAL, @ RadLatEnd REAL, @ RadLatDiff REAL RadLngDiff REAL SET @ RadLatBegin = @ LatBegin * PI () / 180.0 SET @ RadLatEnd = @ LatEnd * PI () / 180.0 SET @ RadLatDiff = @ RadLatBegin-@ RadLatEnd SET @ RadLngDiff = @ LngBegin * PI () / 180.0-@ LngEnd * PI () / 180.0 SET @ Distance = 2 * ASIN (SQRT (POWER (SIN (@ RadLatDiff / 2), 2) + COS (@ RadLatBegin) * COS (@ RadLatEnd) * POWER (SIN (@ RadLngDiff / 2)) 2) SET @ Distance = @ Distance * @ EARTH_RADIUS-- SET @ Distance = Round (@ Distance * 10000) / 10000 RETURN @ Distance END @ Distance

The above is how to calculate the distance difference according to the longitude and latitude of the map in SQLSERVER. Have you learned the knowledge or skills? If you want to learn more skills or enrich your knowledge reserve, you are welcome to follow the industry information channel.

Welcome to subscribe "Shulou Technology Information " to get latest news, interesting things and hot topics in the IT industry, and controls the hottest and latest Internet news, technology news and IT industry trends.