Syntax
------

OVERLAPS(g1,g2)

Description
-----------

Returns 1 or 0 to indicate whether g1 spatially overlaps g2. The term
spatially overlaps is used if two geometries intersect and their intersection
results in a geometry of the same dimension but not equal to either of the
given geometries.

OVERLAPS() is based on the original MySQL implementation and uses object
bounding rectangles, while ST_OVERLAPS() uses object shapes.

URL: https://mariadb.com/kb/en/overlaps/