曾经想过在循环读取数据的时候进行记录，但是那效率并没有直接在sql中用函数调用好

CREATE FUNCTION [dbo].[fnGetDistance](@LatBegin REAL, @LngBegin REAL, @LatEnd REAL, @LngEnd REAL) RETURNS FLOAT  ASBEGIN  --距离(米)  DECLARE @Distance REAL  DECLARE @EARTH_RADIUS REAL  SET @EARTH_RADIUS = 6378137.0  --地球半径  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   RETURN @DistanceENDGO

 只需要sql调用出来显示即可

附近商城 - 一个码农的成功记录