IsSimple(g)

In MySQL 5.5, this function is a placeholder that always returns 0.

The descriptions of the instantiable geometric classes given under
http://dev.mysql.com/doc/refman/5.5/en/opengis-geometry-model.html
includes the specific conditions that cause class instances to be
classified as not simple.

URL: http://dev.mysql.com/doc/refman/5.5/en/gis-general-property-functions.html

