ST_GeomFromWKB(wkb[, srid]), ST_GeometryFromWKB(wkb[, srid])

Constructs a geometry value of any type using its WKB representation
and SRID.

The result is NULL if the WKB or SRID argument is NULL.

URL: http://dev.mysql.com/doc/refman/5.7/en/gis-wkb-functions.html

