ST_POINTONSURFACE() was introduced in MariaDB 10.1.2
 
Syntax
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ST_PointOnSurface(g)
PointOnSurface(g)
 
Description
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Given a geometry, returns a POINT guaranteed to intersect a
surface. However, see MDEV-7514.
 
ST_PointOnSurface() and PointOnSurface() are synonyms.
 

 
 
 
 
 
 
 

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