MBRCovers(g1, g2)

Returns 1 or 0 to indicate whether the minimum bounding rectangle of g1
covers the minimum bounding rectangle of g2. This tests the opposite
relationship as MBRCoveredBy(). See the description of MBRCoveredBy()
for examples.

MBRCovers() handles its arguments as described in the introduction to
this section.

URL: https://dev.mysql.com/doc/refman/8.0/en/spatial-relation-functions-mbr.html

