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MySQL 5.6 Reference Manual
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12.15.9.1 Spatial Relation Functions That Use Object Shapes

The OpenGIS specification defines the following functions. They test the relationship between two geometry values g1 and g2, using precise object shapes. The return values 1 and 0 indicate true and false, respectively, except for ST_Distance(), which returns distance values.

  • ST_Contains(g1,g2)

    Returns 1 or 0 to indicate whether g1 completely contains g2. This tests the opposite relationship as ST_Within().

    ST_Contains() was added in MySQL 5.6.1.

  • Crosses(g1,g2)

    ST_Crosses() and Crosses() are synonyms. For more information, see the description of ST_Crosses().

  • ST_Crosses(g1,g2)

    Returns 1 if g1 spatially crosses g2. Returns NULL if g1 is a Polygon or a MultiPolygon, or if g2 is a Point or a MultiPoint. Otherwise, returns 0.

    The term spatially crosses denotes a spatial relation between two given geometries that has the following properties:

    • The two geometries intersect

    • Their intersection results in a geometry that has a dimension that is one less than the maximum dimension of the two given geometries

    • Their intersection is not equal to either of the two given geometries

    ST_Crosses() and Crosses() are synonyms.

    ST_Crosses() was added in MySQL 5.6.1.

  • ST_Disjoint(g1,g2)

    Returns 1 or 0 to indicate whether g1 is spatially disjoint from (does not intersect) g2.

    ST_Disjoint() was added in MySQL 5.6.1.

  • ST_Distance(g1,g2)

    Returns the distance between g1 and g2.

    mysql> SET @g1 = POINT(1,1), @g2 = POINT(2,2);
    mysql> SELECT ST_Distance(@g1, @g2);
    +-----------------------+
    | ST_Distance(@g1, @g2) |
    +-----------------------+
    |    1.4142135623730951 |
    +-----------------------+
    

    ST_Distance() was added in MySQL 5.6.1.

  • ST_Equals(g1,g2)

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

    mysql> SET @g1 = POINT(1,1), @g2 = POINT(2,2);
    mysql> SELECT ST_Equals(@g1, @g1), ST_Equals(@g1, @g2);
    +---------------------+---------------------+
    | ST_Equals(@g1, @g1) | ST_Equals(@g1, @g2) |
    +---------------------+---------------------+
    |                   1 |                   0 |
    +---------------------+---------------------+
    

    ST_Equals() was added in MySQL 5.6.1.

  • ST_Intersects(g1,g2)

    Returns 1 or 0 to indicate whether g1 spatially intersects g2.

    ST_Intersects() was added in MySQL 5.6.1.

  • ST_Overlaps(g1,g2)

    Returns 1 or 0 to indicate whether g1 spatially overlaps g2. The term spatially overlaps is used if two geometries intersect and their intersection results in a geometry of the same dimension but not equal to either of the given geometries.

    ST_Overlaps() was added in MySQL 5.6.1.

  • ST_Touches(g1,g2)

    Returns 1 or 0 to indicate whether g1 spatially touches g2. Two geometries spatially touch if the interiors of the geometries do not intersect, but the boundary of one of the geometries intersects either the boundary or the interior of the other.

    ST_Touches() and Touches() are synonyms.

    ST_Touches() was added in MySQL 5.6.1.

  • ST_Within(g1,g2)

    Returns 1 or 0 to indicate whether g1 is spatially within g2. This tests the opposite relationship as ST_Contains().

    ST_Within() was added in MySQL 5.6.1.

  • Touches(g1,g2)

    ST_Touches() and Touches() are synonyms. For more information, see the description of ST_Touches().


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