MariaDB starting with 10.1.2
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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/