ST_POINTONSURFACE

MariaDB starting with 10.1.2

ST_POINTONSURFACE() was introduced in MariaDB 10.1.2

Syntax

ST_PointOnSurface(g)
PointOnSurface(g)

Description

Given a geometry, returns a POINT guaranteed to intersect a surface. However, see MDEV-7514.

ST_PointOnSurface() and PointOnSurface() are synonyms.

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