1.3 KiB
1.3 KiB
ST_DISTANCE
[esql-st_distance]
Syntax
:::{image} ../../../../../images/st_distance.svg :alt: Embedded :class: text-center :::
Parameters
geomA
- Expression of type
geo_point
orcartesian_point
. Ifnull
, the function returnsnull
. geomB
- Expression of type
geo_point
orcartesian_point
. Ifnull
, the function returnsnull
. The second parameter must also have the same coordinate system as the first. This means it is not possible to combinegeo_point
andcartesian_point
parameters.
Description
Computes the distance between two points. For cartesian geometries, this is the pythagorean distance in the same units as the original coordinates. For geographic geometries, this is the circular distance along the great circle in meters.
Supported types
geomA | geomB | result |
---|---|---|
cartesian_point | cartesian_point | double |
geo_point | geo_point | double |
Example
FROM airports
| WHERE abbrev == "CPH"
| EVAL distance = ST_DISTANCE(location, city_location)
| KEEP abbrev, name, location, city_location, distance
abbrev:k | name:text | location:geo_point | city_location:geo_point | distance:d |
---|---|---|---|---|
CPH | Copenhagen | POINT(12.6493508684508 55.6285017221528) | POINT(12.5683 55.6761) | 7339.573896618216 |