# CROSSES

## Syntax

```sql
Crosses(g1,g2)
```

## Description

Returns `1` if `g1` spatially crosses `g2`. Returns `NULL` if `g1` is a [Polygon](https://mariadb.com/docs/server/reference/sql-statements/geometry-constructors/geometry-constructors/polygon) or a [MultiPolygon](https://mariadb.com/docs/server/reference/sql-statements/geometry-constructors/geometry-constructors/multipolygon), or if `g2` is a [Point](https://mariadb.com/docs/server/reference/sql-statements/geometry-constructors/geometry-constructors/point) or a [MultiPoint](https://mariadb.com/docs/server/reference/sql-statements/geometry-constructors/geometry-constructors/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.

`CROSSES()` is based on the original MySQL implementation, and uses object bounding rectangles, while [ST\_CROSSES()](https://mariadb.com/docs/server/reference/sql-statements/geometry-constructors/geometry-relations/st-crosses) uses object shapes.

<sub>*This page is licensed: GPLv2, originally from*</sub> [<sub>*fill\_help\_tables.sql*</sub>](https://github.com/MariaDB/server/blob/main/scripts/fill_help_tables.sql)

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