ST_Reverse

Introduction: Return the geometry with vertex order reversed

Format: ST_Reverse (A:geometry)

Example:

SELECT ST_AsText(
    ST_Reverse(ST_GeomFromText('LINESTRING(0 0, 1 2, 2 4, 3 6)'))
) AS geom

Result:

+---------------------------------------------------------------+
|geom                                                           |
+---------------------------------------------------------------+
|LINESTRING (3 6, 2 4, 1 2, 0 0)                                |
+---------------------------------------------------------------+