ST_Azimuth
Signature
DOUBLE ST_Azimuth(GEOMETRY pointA, GEOMETRY pointB);Description
Returns the azimuth in radians of the segment from pointA to
pointB clockwise from the North (0, 1).
Returns NULL if pointA and pointB are not POINT Geometries
or are coincident.
Examples
SELECT ST_Azimuth('LINESTRING(0 0, 5 5)', 'POINT(10 0)');
-- Answer: NULL
SELECT DEGREES(ST_Azimuth('POINT(0 1)', 'POINT(10 1)'));
-- Answer: 90.0
SELECT ST_Azimuth('POINT(0 1)', 'POINT(10 1)');
-- Answer: 1.5707963267948966