Syntax
------ 
Crosses(g1,g2)
 
Description
----------- 
Returns 1 if g1 spatially crosses g2. Returns NULL if g1 is
a Polygon or a MultiPolygon, or if g2 is a
Point or a MultiPoint. Otherwise, returns 0.
 
The term spatially crosses denotes a spatial relation
between two
given geometries that has the following properties:
The two geometries intersect
Their intersection results in a geometry that has a
dimension that is one
 less than the maximum dimension of the two given geometries
Their intersection is not equal to either of the two given
geometries
 
CROSSES() is based on the original MySQL implementation, and
uses object bounding rectangles, while ST_CROSSES() uses
object shapes.
 

 
 
 
 
 
 
 

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