> ## Documentation Index
> Fetch the complete documentation index at: https://docs.wherobots.com/llms.txt
> Use this file to discover all available pages before exploring further.
# ST_Relate
The first variant of the function computes and returns the [Dimensionally Extended 9-Intersection Model (DE-9IM)](https://en.wikipedia.org/wiki/DE-9IM) matrix string representing the spatial relationship between the two input geometry objects.
The second variant of the function evaluates whether the two input geometries satisfy a specific spatial relationship defined by the provided `intersectionMatrix` pattern.
It is important to note that this function is not optimized for use in spatial join operations. Certain DE-9IM relationships can hold true for geometries that do not intersect or are disjoint. As a result, it is recommended to utilize other dedicated spatial functions specifically optimized for spatial join processing.
## Signatures
```sql theme={"system"}
ST_Relate(geom1: Geometry, geom2: Geometry)
```
```sql theme={"system"}
ST_Relate(geom1: Geometry, geom2: Geometry, intersectionMatrix: String)
```
## Parameters
The geom1 value.
The geom2 value.
The intersection matrix value.
## Return type
A string representation.
## Examples
```sql theme={"system"}
SELECT ST_Relate(
ST_GeomFromWKT('LINESTRING (1 1, 5 5)'),
ST_GeomFromWKT('POLYGON ((3 3, 3 7, 7 7, 7 3, 3 3))')
)
```
```
1010F0212
```
```sql theme={"system"}
SELECT ST_Relate(
ST_GeomFromWKT('LINESTRING (1 1, 5 5)'),
ST_GeomFromWKT('POLYGON ((3 3, 3 7, 7 7, 7 3, 3 3))'),
"1010F0212"
)
```
```
true
```