geoNear

Determines if point1 and point2 are within a specified distance from each other, default units are kilometers. Returns a Boolean.

Syntax

geoNear(point1, point2, distance[, units])

Parameters

ParameterDescription

point1

Required. GeoJSON Point specifying the origin.

point2

Required. GeoJSON Point specifying the destination.

distance

Required. The maximum distance in units as an integer or decimal.

units

Optional. Specified as a string. Options are ‘degrees’, ‘radians’, ‘miles’, or ‘kilometers’. Default is ‘kilometers’.

Example 1

Return all locations within 50 miles of a given point.

SELECT *
FROM dev.locations
WHERE geoNear('[-104.979127,39.761563]', geo_data, 50, 'miles')

Example 2

Return all locations within 2 degrees of the earth of a given point. (Each degree lat/long is about 69 miles [111 kilometers]). Return all data and the distance in miles, sorted by ascending distance.

SELECT *, geoDistance('[-104.979127,39.761563]', geo_data, 'miles') as distance
FROM dev.locations
WHERE geoNear('[-104.979127,39.761563]', geo_data, 2, 'degrees')
ORDER BY distance ASC

Last updated

© HarperDB. All Rights Reserved