> For the complete documentation index, see [llms.txt](https://mariadb.com/docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://mariadb.com/docs/server/reference/sql-statements/geometry-constructors/geometry-relations/st-touches.md).

# ST\_TOUCHES

## Syntax

```bnf
ST_TOUCHES(g1,g2)
```

## Description

Returns `1` or `0` to indicate whether geometry *`g1`* spatially touches geometry *`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() uses object shapes, while [TOUCHES()](/docs/server/reference/sql-statements/geometry-constructors/geometry-relations/touches.md), based on the original MySQL implementation, uses object bounding rectangles.

## Examples

```sql
SET @g1 = ST_GEOMFROMTEXT('POINT(2 0)');

SET @g2 = ST_GEOMFROMTEXT('LINESTRING(2 0, 0 2)');

SELECT ST_TOUCHES(@g1,@g2);
+---------------------+
| ST_TOUCHES(@g1,@g2) |
+---------------------+
|                   1 |
+---------------------+

SET @g1 = ST_GEOMFROMTEXT('POINT(2 1)');

SELECT ST_TOUCHES(@g1,@g2);
+---------------------+
| ST_TOUCHES(@g1,@g2) |
+---------------------+
|                   0 |
+---------------------+
```

<sub>*This page is licensed: CC BY-SA / Gnu FDL*</sub>

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