12.15.9.2 Spatial Relation Functions That Use Minimum Bounding Rectangles (MBRs)

The OpenGIS specification defines the following functions that test the relationship between two geometry values g1 and g2. The MySQL implementation uses minimum bounding rectangles, so these functions return the same result as the corresponding MBR-based functions. The return values 1 and 0 indicate true and false, respectively.

• Contains(g1, g2)

  MBRContains() and Contains() are synonyms. For more information, see the description of MBRContains().

• Disjoint(g1, g2)

  MBRDisjoint() and Disjoint() are synonyms. For more information, see the description of MBRDisjoint().

• Equals(g1, g2)

  Returns 1 or 0 to indicate whether g1 is spatially equal to g2.

• Intersects(g1, g2)

  MBRIntersects() and Intersects() are synonyms. For more information, see the description of MBRIntersects().

• Overlaps(g1, g2)

  MBROverlaps() and Overlaps() are synonyms. For more information, see the description of MBROverlaps().

• Within(g1, g2)

  MBRWithin() and Within() are synonyms. For more information, see the description of MBRWithin().