sql server 根据经纬度计算两点间距离

DECLARE @BJ GEOGRAPHY
DECLARE @XT GEOGRAPHY

SELECT  @BJ= geography::Point('39.92889', '116.38833', 4326)
SELECT @XT = geography::Point('37.0630556', '114.441667', 4326)

ELECT
@BJ AS Beijing,
@XT AS Xingtai,
'The distance is ' +
CAST(@BJ.STDistance(@XT)/1000 AS VARCHAR(MAX)) + ' km' AS Distance

SELECT
top 1 CAST(geography::Point('39.92889', '116.38833', 4326).STDistance(geography::Point
('37.0630556', '114.4941667', 4326))/1000 AS FLOAT)
FROM
表名