MariaDB starting with 10.1.2
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The ST_RELATE() function was introduced in MariaDB 10.1.2

Syntax
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ST_Relate(g1, g2, i)

Description
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Returns true if Geometry g1 is spatially related to Geometryg2 by testing for
intersections between the interior, boundary and exterior of the two
geometries as specified by the values in intersection matrix pattern i.

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