Distance between two Point with Latitude & Longitude in oracle DB

Question

I need to calculate Distance between two location through Pl SQL Query. I had tried some Qry but not getting it.

for this we are using Query in SQL is as follows

SELECT ROUND(geography::Point(cast('19.2806118' as float),cast('72.8757395' as float) , 
4326).STDistance(geography::Point(cast('19.4482006' as float),
cast('72.7912511' as float), 4326))/1000,1) DIST

Result : 20.6

To Calculate the same in ORACLE Db I have found a solution over internet which is as follows

select sdo_geom.sdo_distance(sdo_geometry(2001,4326,null,sdo_elem_info_array(1, 1, 1),
sdo_ordinate_array( 19.2806118,72.8757395)),sdo_geometry(2001,4326, null,sdo_elem_info_array(1, 1, 
1),sdo_ordinate_array( 19.4482006,72.7912511)),1,'unit=KM') distance_km from dual

Result : 10.9271..

Please suggest the method which will give me result in KM as I am getting MS SQL

Answer 1

Please suggest the method which will give me result in KM as I am getting MS SQL

Swapping parameter order 19.2806118,72.8757395 to 72.8757395,19.2806118

select sdo_geom.sdo_distance(
   sdo_geometry(2001,4326,null,sdo_elem_info_array(1, 1, 1),
                 sdo_ordinate_array(72.8757395,19.2806118)),
   sdo_geometry(2001,4326, null,sdo_elem_info_array(1, 1,1),
                 sdo_ordinate_array(72.7912511,19.4482006))
   ,1
   ,'unit=KM') distance_km 
from dual;

Yields exactly the same result as SQL Server: 20.5657053685075

db<>fiddle demo Oracle
db<>fiddle demo SQL Server

Or by using sdo_point:

SELECT sdo_geom.sdo_distance(
         sdo_geometry(2001, 4326,
                sdo_point_type(72.8757395, 19.2806118, NULL), NULL, NULL),
          sdo_geometry(2001, 4326,
               sdo_point_type(72.7912511, 19.4482006, NULL), NULL, NULL),
               1, 'unit=KM') distance_in_m
from DUAL;

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SQL Server: geography::Point ( Lat, Long, SRID )